java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:34:35,287 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:34:35,289 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:34:35,304 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:34:35,304 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:34:35,306 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:34:35,307 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:34:35,310 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:34:35,312 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:34:35,313 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:34:35,315 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:34:35,315 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:34:35,316 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:34:35,317 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:34:35,317 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:34:35,321 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:34:35,322 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:34:35,331 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:34:35,333 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:34:35,334 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:34:35,335 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:34:35,340 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:34:35,340 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:34:35,340 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:34:35,341 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:34:35,342 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:34:35,342 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:34:35,345 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:34:35,346 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:34:35,346 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:34:35,346 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:34:35,347 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:34:35,347 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:34:35,350 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:34:35,351 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:34:35,351 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:34:35,372 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:34:35,373 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:34:35,373 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:34:35,373 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:34:35,375 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:34:35,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:34:35,375 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:34:35,376 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:34:35,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:34:35,376 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:34:35,376 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:34:35,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:34:35,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:34:35,377 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:34:35,377 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:34:35,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:34:35,377 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:34:35,381 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:34:35,381 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:34:35,429 INFO ]: Repository-Root is: /tmp [2018-06-22 09:34:35,443 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:34:35,447 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:34:35,448 INFO ]: Initializing SmtParser... [2018-06-22 09:34:35,448 INFO ]: SmtParser initialized [2018-06-22 09:34:35,449 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 [2018-06-22 09:34:35,450 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 09:34:35,532 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 unknown [2018-06-22 09:34:35,936 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 [2018-06-22 09:34:35,941 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:34:35,947 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:34:35,948 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:34:35,948 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:34:35,948 INFO ]: ChcToBoogie initialized [2018-06-22 09:34:35,951 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:34:35" (1/1) ... [2018-06-22 09:34:36,020 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36 Unit [2018-06-22 09:34:36,020 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:34:36,021 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:34:36,021 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:34:36,021 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:34:36,045 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (1/1) ... [2018-06-22 09:34:36,045 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (1/1) ... [2018-06-22 09:34:36,065 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (1/1) ... [2018-06-22 09:34:36,065 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (1/1) ... [2018-06-22 09:34:36,070 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (1/1) ... [2018-06-22 09:34:36,071 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (1/1) ... [2018-06-22 09:34:36,082 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (1/1) ... [2018-06-22 09:34:36,085 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:34:36,085 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:34:36,085 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:34:36,085 INFO ]: RCFGBuilder initialized [2018-06-22 09:34:36,086 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (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 09:34:36,112 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:34:36,112 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:34:36,112 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:34:36,112 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:34:36,112 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:34:36,112 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 09:34:36,593 INFO ]: Using library mode [2018-06-22 09:34:36,594 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:34:36 BoogieIcfgContainer [2018-06-22 09:34:36,594 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:34:36,595 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:34:36,595 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:34:36,603 INFO ]: TraceAbstraction initialized [2018-06-22 09:34:36,603 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:34:35" (1/3) ... [2018-06-22 09:34:36,604 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1603e647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:34:36, skipping insertion in model container [2018-06-22 09:34:36,604 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:34:36" (2/3) ... [2018-06-22 09:34:36,604 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1603e647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:34:36, skipping insertion in model container [2018-06-22 09:34:36,604 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:34:36" (3/3) ... [2018-06-22 09:34:36,606 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:34:36,614 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:34:36,623 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:34:36,677 INFO ]: Using default assertion order modulation [2018-06-22 09:34:36,678 INFO ]: Interprodecural is true [2018-06-22 09:34:36,678 INFO ]: Hoare is false [2018-06-22 09:34:36,678 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:34:36,678 INFO ]: Backedges is TWOTRACK [2018-06-22 09:34:36,678 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:34:36,678 INFO ]: Difference is false [2018-06-22 09:34:36,678 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:34:36,678 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:34:36,693 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:34:36,708 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:34:36,709 INFO ]: Found error trace [2018-06-22 09:34:36,712 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:34:36,712 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:34:36,718 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 09:34:36,720 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:34:36,720 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:34:36,769 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:34:36,769 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:34:36,769 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:34:36,890 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:34:37,040 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:34:37,042 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:34:37,042 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:34:37,043 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:34:37,054 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:34:37,055 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:34:37,057 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:34:37,120 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:34:37,120 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:34:37,121 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:34:37,122 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:34:37,122 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:34:37,137 INFO ]: With dead ends: 9 [2018-06-22 09:34:37,137 INFO ]: Without dead ends: 9 [2018-06-22 09:34:37,139 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:34:37,159 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:34:37,175 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:34:37,176 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:34:37,177 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:34:37,178 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:34:37,178 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:34:37,179 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:34:37,179 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:34:37,179 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:34:37,179 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:34:37,179 INFO ]: Found error trace [2018-06-22 09:34:37,179 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:34:37,179 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:34:37,179 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 09:34:37,179 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:34:37,179 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:34:37,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:34:37,180 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:34:37,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:34:37,255 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:34:37,510 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:34:37,510 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:34:37,510 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 09:34:37,517 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:34:37,688 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:34:37,700 INFO ]: Computing forward predicates... [2018-06-22 09:34:37,951 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 09:34:37,960 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 09:34:37,965 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 09:34:37,977 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 09:34:38,635 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-06-22 09:34:38,655 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:34:38,688 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:34:38,689 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 09:34:38,689 INFO ]: Interpolant automaton has 5 states [2018-06-22 09:34:38,690 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 09:34:38,690 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:34:38,690 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 09:34:39,085 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2018-06-22 09:34:39,177 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:34:39,177 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 09:34:39,178 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 09:34:39,179 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 09:34:39,179 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:34:39,179 INFO ]: With dead ends: 10 [2018-06-22 09:34:39,179 INFO ]: Without dead ends: 10 [2018-06-22 09:34:39,180 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:34:39,180 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 09:34:39,181 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 09:34:39,181 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 09:34:39,181 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 09:34:39,181 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 09:34:39,181 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:34:39,181 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 09:34:39,181 INFO ]: Interpolant automaton has 5 states. [2018-06-22 09:34:39,181 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 09:34:39,182 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 09:34:39,182 INFO ]: Found error trace [2018-06-22 09:34:39,182 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:34:39,182 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:34:39,182 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 09:34:39,182 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:34:39,182 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:34:39,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:34:39,185 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:34:39,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:34:39,253 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:34:39,517 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:34:39,517 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:34:39,517 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 09:34:39,525 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:34:39,640 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:34:39,640 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:34:39,647 INFO ]: Computing forward predicates... [2018-06-22 09:34:39,701 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 09:34:40,171 WARN ]: Simplifying disjunction of 23328 conjuctions. This might take some time... Received shutdown request... [2018-06-22 09:35:57,193 INFO ]: Timeout while computing interpolants [2018-06-22 09:35:57,394 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:35:57,394 WARN ]: Verification canceled [2018-06-22 09:35:57,398 WARN ]: Timeout [2018-06-22 09:35:57,399 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:35:57 BoogieIcfgContainer [2018-06-22 09:35:57,399 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:35:57,399 INFO ]: Toolchain (without parser) took 81458.05 ms. Allocated memory was 307.8 MB in the beginning and 843.1 MB in the end (delta: 535.3 MB). Free memory was 255.1 MB in the beginning and 727.4 MB in the end (delta: -472.3 MB). Peak memory consumption was 877.2 MB. Max. memory is 3.6 GB. [2018-06-22 09:35:57,400 INFO ]: SmtParser took 0.08 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 09:35:57,400 INFO ]: ChcToBoogie took 72.95 ms. Allocated memory is still 307.8 MB. Free memory was 255.1 MB in the beginning and 252.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:35:57,401 INFO ]: Boogie Preprocessor took 63.93 ms. Allocated memory is still 307.8 MB. Free memory was 252.1 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:35:57,401 INFO ]: RCFGBuilder took 508.38 ms. Allocated memory is still 307.8 MB. Free memory was 250.1 MB in the beginning and 228.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 3.6 GB. [2018-06-22 09:35:57,402 INFO ]: TraceAbstraction took 80803.35 ms. Allocated memory was 307.8 MB in the beginning and 843.1 MB in the end (delta: 535.3 MB). Free memory was 228.9 MB in the beginning and 727.4 MB in the end (delta: -498.5 MB). Peak memory consumption was 851.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:35:57,405 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 72.95 ms. Allocated memory is still 307.8 MB. Free memory was 255.1 MB in the beginning and 252.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.93 ms. Allocated memory is still 307.8 MB. Free memory was 252.1 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 508.38 ms. Allocated memory is still 307.8 MB. Free memory was 250.1 MB in the beginning and 228.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 80803.35 ms. Allocated memory was 307.8 MB in the beginning and 843.1 MB in the end (delta: 535.3 MB). Free memory was 228.9 MB in the beginning and 727.4 MB in the end (delta: -498.5 MB). Peak memory consumption was 851.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 23328 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 80.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 532 SizeOfPredicates, 8 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e3_507.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-35-57-415.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e3_507.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-35-57-415.csv Completed graceful shutdown