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/vmt-chc-benchmarks/lustre/ticket3i_6.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:36:19,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:36:19,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:36:19,170 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:36:19,170 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:36:19,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:36:19,175 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:36:19,177 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:36:19,179 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:36:19,179 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:36:19,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:36:19,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:36:19,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:36:19,184 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:36:19,184 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:36:19,188 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:36:19,190 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:36:19,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:36:19,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:36:19,206 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:36:19,206 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:36:19,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:36:19,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:36:19,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:36:19,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:36:19,216 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:36:19,217 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:36:19,218 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:36:19,218 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:36:19,219 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:36:19,219 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:36:19,224 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:36:19,224 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:36:19,225 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:36:19,226 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:36:19,226 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 20:36:19,249 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:36:19,251 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:36:19,251 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:36:19,251 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:36:19,252 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:36:19,253 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:36:19,253 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:36:19,253 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:36:19,253 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:36:19,253 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:36:19,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:36:19,254 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:36:19,254 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:36:19,254 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:36:19,254 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:36:19,254 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:36:19,257 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:36:19,258 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:36:19,258 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:36:19,259 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:36:19,259 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:36:19,309 INFO ]: Repository-Root is: /tmp [2018-06-22 20:36:19,324 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:36:19,329 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:36:19,330 INFO ]: Initializing SmtParser... [2018-06-22 20:36:19,330 INFO ]: SmtParser initialized [2018-06-22 20:36:19,331 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_6.smt2 [2018-06-22 20:36:19,332 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 20:36:19,409 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_6.smt2 unknown [2018-06-22 20:36:19,983 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_6.smt2 [2018-06-22 20:36:19,987 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:36:20,001 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:36:20,002 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:36:20,002 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:36:20,002 INFO ]: ChcToBoogie initialized [2018-06-22 20:36:20,005 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:36:19" (1/1) ... [2018-06-22 20:36:20,090 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20 Unit [2018-06-22 20:36:20,090 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:36:20,103 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:36:20,103 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:36:20,103 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:36:20,121 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (1/1) ... [2018-06-22 20:36:20,121 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (1/1) ... [2018-06-22 20:36:20,140 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (1/1) ... [2018-06-22 20:36:20,140 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (1/1) ... [2018-06-22 20:36:20,150 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (1/1) ... [2018-06-22 20:36:20,151 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (1/1) ... [2018-06-22 20:36:20,154 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (1/1) ... [2018-06-22 20:36:20,160 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:36:20,161 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:36:20,161 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:36:20,161 INFO ]: RCFGBuilder initialized [2018-06-22 20:36:20,162 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (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 20:36:20,184 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:36:20,184 INFO ]: Found specification of procedure False [2018-06-22 20:36:20,184 INFO ]: Found implementation of procedure False [2018-06-22 20:36:20,184 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:36:20,184 INFO ]: Found specification of procedure state [2018-06-22 20:36:20,184 INFO ]: Found implementation of procedure state [2018-06-22 20:36:20,185 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:36:20,185 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:36:20,185 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 20:36:20,611 INFO ]: Using library mode [2018-06-22 20:36:20,611 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:36:20 BoogieIcfgContainer [2018-06-22 20:36:20,611 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:36:20,613 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:36:20,613 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:36:20,616 INFO ]: TraceAbstraction initialized [2018-06-22 20:36:20,616 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:36:19" (1/3) ... [2018-06-22 20:36:20,617 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89a511d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:36:20, skipping insertion in model container [2018-06-22 20:36:20,617 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:36:20" (2/3) ... [2018-06-22 20:36:20,617 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89a511d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:36:20, skipping insertion in model container [2018-06-22 20:36:20,617 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:36:20" (3/3) ... [2018-06-22 20:36:20,623 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:36:20,634 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:36:20,645 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:36:20,694 INFO ]: Using default assertion order modulation [2018-06-22 20:36:20,695 INFO ]: Interprodecural is true [2018-06-22 20:36:20,695 INFO ]: Hoare is false [2018-06-22 20:36:20,695 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:36:20,695 INFO ]: Backedges is TWOTRACK [2018-06-22 20:36:20,695 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:36:20,695 INFO ]: Difference is false [2018-06-22 20:36:20,695 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:36:20,695 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:36:20,711 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:36:20,721 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:36:20,722 INFO ]: Found error trace [2018-06-22 20:36:20,723 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:36:20,724 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:36:20,730 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 20:36:20,732 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:36:20,732 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:36:20,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:36:20,780 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:36:20,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:36:20,887 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:36:21,185 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:36:21,187 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:36:21,187 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:36:21,189 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:36:21,199 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:36:21,199 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:36:21,202 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:36:21,320 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:36:21,320 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:36:21,323 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:36:21,324 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:36:21,325 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:36:21,338 INFO ]: With dead ends: 13 [2018-06-22 20:36:21,338 INFO ]: Without dead ends: 13 [2018-06-22 20:36:21,340 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 20:36:21,358 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:36:21,392 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:36:21,395 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:36:21,396 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:36:21,397 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:36:21,397 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:36:21,397 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:36:21,397 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:36:21,397 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:36:21,399 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:36:21,399 INFO ]: Found error trace [2018-06-22 20:36:21,399 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:36:21,399 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:36:21,399 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 20:36:21,399 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:36:21,399 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:36:21,400 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:36:21,400 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:36:21,400 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:36:21,511 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:36:21,777 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:36:21,777 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:36:21,777 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 20:36:21,786 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:36:21,958 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:36:21,973 INFO ]: Computing forward predicates... [2018-06-22 20:36:22,618 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 20:36:23,409 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,410 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,412 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,432 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,435 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,436 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,439 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,446 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:36:23,450 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,452 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,457 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:23,460 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:36:33,923 WARN ]: Spent 778.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 22 [2018-06-22 20:36:33,969 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:36:34,005 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:36:34,005 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:36:34,006 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:36:34,006 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:36:34,006 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:36:34,006 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:36:34,274 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:36:34,274 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:36:34,276 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:36:34,276 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:36:34,276 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:36:34,277 INFO ]: With dead ends: 15 [2018-06-22 20:36:34,277 INFO ]: Without dead ends: 15 [2018-06-22 20:36:34,278 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:36:34,278 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:36:34,280 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:36:34,280 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:36:34,282 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:36:34,282 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:36:34,282 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:36:34,282 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:36:34,282 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:36:34,282 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:36:34,283 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:36:34,283 INFO ]: Found error trace [2018-06-22 20:36:34,283 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:36:34,283 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:36:34,283 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 20:36:34,283 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:36:34,283 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:36:34,284 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:36:34,284 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:36:34,284 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:36:34,382 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:36:34,840 WARN ]: Spent 223.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 23 [2018-06-22 20:36:34,954 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:36:34,954 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:36:34,954 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 20:36:34,962 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:36:35,129 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:36:35,129 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:36:35,136 INFO ]: Computing forward predicates... [2018-06-22 20:36:35,525 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 20:36:35,637 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:35,645 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:36:35,654 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:36:35,852 WARN ]: Simplifying disjunction of 12068 conjuctions. This might take some time... [2018-06-22 20:36:50,184 INFO ]: Simplified to disjunction of 12068 conjuctions. [2018-06-22 20:36:50,246 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:36:50,353 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:36:50,357 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 20:36:50,452 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:36:50,478 WARN ]: Simplifying disjunction of 7700 conjuctions. This might take some time... [2018-06-22 20:36:54,588 INFO ]: Simplified to disjunction of 7700 conjuctions. [2018-06-22 20:36:54,648 WARN ]: Simplifying disjunction of 6912 conjuctions. This might take some time... [2018-06-22 20:36:57,881 INFO ]: Simplified to disjunction of 6912 conjuctions. [2018-06-22 20:36:57,920 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 20:36:58,536 WARN ]: Simplifying disjunction of 72576 conjuctions. This might take some time... Received shutdown request... [2018-06-22 20:37:31,876 INFO ]: Timeout while computing interpolants [2018-06-22 20:37:32,076 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:37:32,077 WARN ]: Verification canceled [2018-06-22 20:37:32,080 WARN ]: Timeout [2018-06-22 20:37:32,080 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:37:32 BoogieIcfgContainer [2018-06-22 20:37:32,080 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:37:32,081 INFO ]: Toolchain (without parser) took 72093.69 ms. Allocated memory was 308.8 MB in the beginning and 1.1 GB in the end (delta: 746.1 MB). Free memory was 241.3 MB in the beginning and 339.6 MB in the end (delta: -98.3 MB). Peak memory consumption was 702.3 MB. Max. memory is 3.6 GB. [2018-06-22 20:37:32,082 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:37:32,086 INFO ]: ChcToBoogie took 101.06 ms. Allocated memory is still 308.8 MB. Free memory was 241.3 MB in the beginning and 238.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:37:32,086 INFO ]: Boogie Preprocessor took 57.13 ms. Allocated memory is still 308.8 MB. Free memory was 238.3 MB in the beginning and 236.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:37:32,087 INFO ]: RCFGBuilder took 450.63 ms. Allocated memory is still 308.8 MB. Free memory was 236.3 MB in the beginning and 204.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. [2018-06-22 20:37:32,087 INFO ]: TraceAbstraction took 71467.33 ms. Allocated memory was 308.8 MB in the beginning and 1.1 GB in the end (delta: 746.1 MB). Free memory was 204.1 MB in the beginning and 339.6 MB in the end (delta: -135.5 MB). Peak memory consumption was 665.2 MB. Max. memory is 3.6 GB. [2018-06-22 20:37:32,090 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 101.06 ms. Allocated memory is still 308.8 MB. Free memory was 241.3 MB in the beginning and 238.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.13 ms. Allocated memory is still 308.8 MB. Free memory was 238.3 MB in the beginning and 236.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 450.63 ms. Allocated memory is still 308.8 MB. Free memory was 236.3 MB in the beginning and 204.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 71467.33 ms. Allocated memory was 308.8 MB in the beginning and 1.1 GB in the end (delta: 746.1 MB). Free memory was 204.1 MB in the beginning and 339.6 MB in the end (delta: -135.5 MB). Peak memory consumption was 665.2 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 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 72576 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 71.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 41 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 0.3s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1252 SizeOfPredicates, 29 NumberOfNonLiveVariables, 617 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/ticket3i_6.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-37-32-105.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_6.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-37-32-105.csv Completed graceful shutdown