java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 17:05:37,288 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 17:05:37,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 17:05:37,316 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 17:05:37,316 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 17:05:37,317 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 17:05:37,330 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 17:05:37,342 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 17:05:37,344 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 17:05:37,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 17:05:37,353 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 17:05:37,353 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 17:05:37,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 17:05:37,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 17:05:37,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 17:05:37,361 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 17:05:37,380 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 17:05:37,388 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 17:05:37,389 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 17:05:37,390 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 17:05:37,391 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 17:05:37,399 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 17:05:37,399 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 17:05:37,399 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 17:05:37,400 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 17:05:37,401 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 17:05:37,402 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 17:05:37,412 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 17:05:37,413 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 17:05:37,413 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 17:05:37,414 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 17:05:37,414 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 17:05:37,414 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 17:05:37,421 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 17:05:37,422 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 17:05:37,422 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 17:05:37,445 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 17:05:37,446 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 17:05:37,446 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 17:05:37,446 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 17:05:37,447 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 17:05:37,448 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 17:05:37,448 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 17:05:37,448 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 17:05:37,448 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 17:05:37,449 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 17:05:37,449 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 17:05:37,449 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 17:05:37,449 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 17:05:37,449 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 17:05:37,450 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 17:05:37,450 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 17:05:37,450 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 17:05:37,450 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 17:05:37,450 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 17:05:37,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 17:05:37,451 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 17:05:37,452 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 17:05:37,452 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 17:05:37,502 INFO ]: Repository-Root is: /tmp [2018-06-25 17:05:37,520 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 17:05:37,524 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 17:05:37,526 INFO ]: Initializing SmtParser... [2018-06-25 17:05:37,526 INFO ]: SmtParser initialized [2018-06-25 17:05:37,527 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_1.smt2 [2018-06-25 17:05:37,528 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-25 17:05:37,626 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_1.smt2 unknown [2018-06-25 17:05:38,123 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_1.smt2 [2018-06-25 17:05:38,128 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 17:05:38,135 INFO ]: Walking toolchain with 4 elements. [2018-06-25 17:05:38,136 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 17:05:38,136 INFO ]: Initializing ChcToBoogie... [2018-06-25 17:05:38,136 INFO ]: ChcToBoogie initialized [2018-06-25 17:05:38,139 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:05:38" (1/1) ... [2018-06-25 17:05:38,264 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38 Unit [2018-06-25 17:05:38,264 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 17:05:38,265 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 17:05:38,265 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 17:05:38,265 INFO ]: Boogie Preprocessor initialized [2018-06-25 17:05:38,306 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (1/1) ... [2018-06-25 17:05:38,306 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (1/1) ... [2018-06-25 17:05:38,316 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (1/1) ... [2018-06-25 17:05:38,316 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (1/1) ... [2018-06-25 17:05:38,323 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (1/1) ... [2018-06-25 17:05:38,325 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (1/1) ... [2018-06-25 17:05:38,327 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (1/1) ... [2018-06-25 17:05:38,330 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 17:05:38,330 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 17:05:38,330 INFO ]: Initializing RCFGBuilder... [2018-06-25 17:05:38,330 INFO ]: RCFGBuilder initialized [2018-06-25 17:05:38,331 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 17:05:38,360 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 17:05:38,360 INFO ]: Found specification of procedure gotoProc [2018-06-25 17:05:38,360 INFO ]: Found implementation of procedure gotoProc [2018-06-25 17:05:38,361 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 17:05:38,361 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 17:05:38,361 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 17:05:38,756 INFO ]: Using library mode [2018-06-25 17:05:38,757 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:05:38 BoogieIcfgContainer [2018-06-25 17:05:38,757 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 17:05:38,758 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 17:05:38,758 INFO ]: Initializing TraceAbstraction... [2018-06-25 17:05:38,772 INFO ]: TraceAbstraction initialized [2018-06-25 17:05:38,772 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:05:38" (1/3) ... [2018-06-25 17:05:38,773 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fbc687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 05:05:38, skipping insertion in model container [2018-06-25 17:05:38,773 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:38" (2/3) ... [2018-06-25 17:05:38,774 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fbc687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 05:05:38, skipping insertion in model container [2018-06-25 17:05:38,774 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:05:38" (3/3) ... [2018-06-25 17:05:38,783 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 17:05:38,801 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 17:05:38,813 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 17:05:38,903 INFO ]: Using default assertion order modulation [2018-06-25 17:05:38,904 INFO ]: Interprodecural is true [2018-06-25 17:05:38,904 INFO ]: Hoare is false [2018-06-25 17:05:38,904 INFO ]: Compute interpolants for FPandBP [2018-06-25 17:05:38,904 INFO ]: Backedges is TWOTRACK [2018-06-25 17:05:38,904 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 17:05:38,904 INFO ]: Difference is false [2018-06-25 17:05:38,904 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 17:05:38,905 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 17:05:38,925 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 17:05:38,949 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 17:05:38,949 INFO ]: Found error trace [2018-06-25 17:05:38,950 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:05:38,950 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:05:38,957 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 17:05:38,960 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:05:38,961 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:05:39,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:05:39,019 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:05:39,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:05:39,147 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:05:39,275 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:05:39,278 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 17:05:39,278 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 17:05:39,282 INFO ]: Interpolant automaton has 3 states [2018-06-25 17:05:39,299 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 17:05:39,300 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 17:05:39,302 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 17:05:39,382 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:05:39,382 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 17:05:39,383 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 17:05:39,384 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 17:05:39,385 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:05:39,398 INFO ]: With dead ends: 9 [2018-06-25 17:05:39,398 INFO ]: Without dead ends: 9 [2018-06-25 17:05:39,400 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 17:05:39,417 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 17:05:39,452 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 17:05:39,454 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 17:05:39,454 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 17:05:39,456 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 17:05:39,456 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:05:39,456 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 17:05:39,456 INFO ]: Interpolant automaton has 3 states. [2018-06-25 17:05:39,456 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 17:05:39,456 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 17:05:39,456 INFO ]: Found error trace [2018-06-25 17:05:39,456 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:05:39,457 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:05:39,457 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 17:05:39,457 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:05:39,457 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:05:39,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:05:39,458 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:05:39,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:05:39,593 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:05:39,915 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:05:39,915 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 17:05:39,915 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 [2018-06-25 17:05:39,927 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:05:40,092 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:05:40,107 INFO ]: Computing forward predicates... [2018-06-25 17:05:40,515 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:05:40,554 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 17:05:40,554 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 17:05:40,554 INFO ]: Interpolant automaton has 5 states [2018-06-25 17:05:40,554 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 17:05:40,554 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 17:05:40,555 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 17:05:40,652 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:05:40,652 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 17:05:40,653 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 17:05:40,653 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 17:05:40,653 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:05:40,654 INFO ]: With dead ends: 10 [2018-06-25 17:05:40,654 INFO ]: Without dead ends: 10 [2018-06-25 17:05:40,655 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 17:05:40,655 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 17:05:40,656 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 17:05:40,656 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 17:05:40,656 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 17:05:40,656 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 17:05:40,657 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:05:40,657 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 17:05:40,657 INFO ]: Interpolant automaton has 5 states. [2018-06-25 17:05:40,657 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 17:05:40,657 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 17:05:40,657 INFO ]: Found error trace [2018-06-25 17:05:40,657 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:05:40,657 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:05:40,657 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-25 17:05:40,657 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:05:40,657 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:05:40,660 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:05:40,661 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:05:40,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:05:40,807 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:05:41,298 WARN ]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-25 17:05:41,299 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:05:41,299 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 17:05:41,299 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) [2018-06-25 17:05:41,336 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 17:05:41,488 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 17:05:41,488 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:05:41,494 INFO ]: Computing forward predicates... [2018-06-25 17:05:41,878 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:05:41,911 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 17:05:41,911 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 17:05:41,912 INFO ]: Interpolant automaton has 6 states [2018-06-25 17:05:41,912 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 17:05:41,912 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-25 17:05:41,912 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-25 17:05:42,074 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:05:42,075 INFO ]: Finished difference Result 6 states and 6 transitions. [2018-06-25 17:05:42,075 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 17:05:42,076 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-25 17:05:42,076 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:05:42,076 INFO ]: With dead ends: 6 [2018-06-25 17:05:42,076 INFO ]: Without dead ends: 0 [2018-06-25 17:05:42,076 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-25 17:05:42,076 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 17:05:42,076 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 17:05:42,076 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 17:05:42,076 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 17:05:42,076 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-25 17:05:42,077 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:05:42,077 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 17:05:42,077 INFO ]: Interpolant automaton has 6 states. [2018-06-25 17:05:42,077 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 17:05:42,077 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 17:05:42,084 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 05:05:42 BoogieIcfgContainer [2018-06-25 17:05:42,084 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 17:05:42,096 INFO ]: Toolchain (without parser) took 3956.07 ms. Allocated memory is still 314.6 MB. Free memory was 263.1 MB in the beginning and 217.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:42,097 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 314.6 MB. Free memory is still 280.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 17:05:42,097 INFO ]: ChcToBoogie took 128.75 ms. Allocated memory is still 314.6 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:42,098 INFO ]: Boogie Preprocessor took 64.99 ms. Allocated memory is still 314.6 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:42,099 INFO ]: RCFGBuilder took 426.50 ms. Allocated memory is still 314.6 MB. Free memory was 258.1 MB in the beginning and 239.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:42,099 INFO ]: TraceAbstraction took 3325.54 ms. Allocated memory is still 314.6 MB. Free memory was 238.1 MB in the beginning and 217.9 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:42,108 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 314.6 MB. Free memory is still 280.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 128.75 ms. Allocated memory is still 314.6 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 64.99 ms. Allocated memory is still 314.6 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 426.50 ms. Allocated memory is still 314.6 MB. Free memory was 258.1 MB in the beginning and 239.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3325.54 ms. Allocated memory is still 314.6 MB. Free memory was 238.1 MB in the beginning and 217.9 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 28 SDs, 0 SdLazy, 21 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 662 SizeOfPredicates, 6 NumberOfNonLiveVariables, 932 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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/PRODUCER_CONSUMER_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_17-05-42-130.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_17-05-42-130.csv Received shutdown request...