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/PRODUCER_CONSUMMER_luke_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:42:31,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:42:31,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:42:31,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:42:31,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:42:31,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:42:31,957 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:42:31,959 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:42:31,961 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:42:31,962 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:42:31,963 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:42:31,963 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:42:31,964 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:42:31,965 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:42:31,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:42:31,967 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:42:31,969 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:42:31,971 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:42:31,973 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:42:31,975 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:42:31,976 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:42:31,979 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:42:31,979 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:42:31,979 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:42:31,980 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:42:31,981 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:42:31,982 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:42:31,983 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:42:31,984 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:42:31,984 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:42:31,985 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:42:31,985 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:42:31,986 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:42:31,987 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:42:31,987 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:42:31,988 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 19:42:32,002 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:42:32,002 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:42:32,002 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:42:32,003 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:42:32,004 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:42:32,004 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:42:32,004 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:42:32,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:42:32,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:42:32,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:42:32,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:42:32,006 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:42:32,006 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:42:32,006 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:42:32,007 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:42:32,007 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:42:32,007 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:42:32,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:42:32,008 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:42:32,009 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:42:32,009 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:42:32,047 INFO ]: Repository-Root is: /tmp [2018-06-22 19:42:32,060 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:42:32,064 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:42:32,065 INFO ]: Initializing SmtParser... [2018-06-22 19:42:32,065 INFO ]: SmtParser initialized [2018-06-22 19:42:32,066 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2.smt2 [2018-06-22 19:42:32,067 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 19:42:32,134 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2.smt2 unknown [2018-06-22 19:42:32,550 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2.smt2 [2018-06-22 19:42:32,555 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:42:32,560 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:42:32,561 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:42:32,561 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:42:32,561 INFO ]: ChcToBoogie initialized [2018-06-22 19:42:32,565 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:42:32" (1/1) ... [2018-06-22 19:42:32,617 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32 Unit [2018-06-22 19:42:32,617 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:42:32,620 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:42:32,620 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:42:32,620 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:42:32,642 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (1/1) ... [2018-06-22 19:42:32,642 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (1/1) ... [2018-06-22 19:42:32,652 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (1/1) ... [2018-06-22 19:42:32,652 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (1/1) ... [2018-06-22 19:42:32,672 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (1/1) ... [2018-06-22 19:42:32,674 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (1/1) ... [2018-06-22 19:42:32,675 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (1/1) ... [2018-06-22 19:42:32,677 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:42:32,678 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:42:32,678 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:42:32,678 INFO ]: RCFGBuilder initialized [2018-06-22 19:42:32,679 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (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 19:42:32,690 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:42:32,690 INFO ]: Found specification of procedure False [2018-06-22 19:42:32,690 INFO ]: Found implementation of procedure False [2018-06-22 19:42:32,690 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:42:32,691 INFO ]: Found specification of procedure state [2018-06-22 19:42:32,691 INFO ]: Found implementation of procedure state [2018-06-22 19:42:32,691 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:42:32,691 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:42:32,691 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 19:42:33,096 INFO ]: Using library mode [2018-06-22 19:42:33,096 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:42:33 BoogieIcfgContainer [2018-06-22 19:42:33,096 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:42:33,101 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:42:33,101 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:42:33,104 INFO ]: TraceAbstraction initialized [2018-06-22 19:42:33,104 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:42:32" (1/3) ... [2018-06-22 19:42:33,105 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bce1521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:42:33, skipping insertion in model container [2018-06-22 19:42:33,105 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:42:32" (2/3) ... [2018-06-22 19:42:33,106 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bce1521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:42:33, skipping insertion in model container [2018-06-22 19:42:33,106 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:42:33" (3/3) ... [2018-06-22 19:42:33,107 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:42:33,119 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:42:33,129 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:42:33,183 INFO ]: Using default assertion order modulation [2018-06-22 19:42:33,184 INFO ]: Interprodecural is true [2018-06-22 19:42:33,184 INFO ]: Hoare is false [2018-06-22 19:42:33,184 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:42:33,184 INFO ]: Backedges is TWOTRACK [2018-06-22 19:42:33,184 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:42:33,184 INFO ]: Difference is false [2018-06-22 19:42:33,184 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:42:33,184 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:42:33,203 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:42:33,218 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:42:33,218 INFO ]: Found error trace [2018-06-22 19:42:33,219 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:42:33,219 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:42:33,224 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:42:33,227 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:42:33,227 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:42:33,272 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:42:33,272 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:42:33,272 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:42:33,379 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:42:33,572 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:42:33,573 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:42:33,573 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:42:33,575 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:42:33,585 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:42:33,586 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:42:33,588 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:42:33,717 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:42:33,717 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:42:33,718 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:42:33,720 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:42:33,720 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:42:33,735 INFO ]: With dead ends: 13 [2018-06-22 19:42:33,735 INFO ]: Without dead ends: 13 [2018-06-22 19:42:33,739 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:42:33,756 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:42:33,792 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:42:33,793 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:42:33,794 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:42:33,795 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:42:33,795 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:42:33,795 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:42:33,795 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:42:33,795 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:42:33,797 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:42:33,797 INFO ]: Found error trace [2018-06-22 19:42:33,797 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:42:33,798 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:42:33,798 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:42:33,798 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:42:33,798 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:42:33,799 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:42:33,799 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:42:33,799 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:42:33,886 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:42:35,324 WARN ]: Spent 1.12 s on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2018-06-22 19:42:35,394 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:42:35,394 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:42:35,394 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 19:42:35,402 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:42:35,477 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:42:35,487 INFO ]: Computing forward predicates... [2018-06-22 19:42:35,732 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:42:35,751 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:42:35,808 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:42:36,869 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:42:36,904 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:42:36,904 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:42:36,905 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:42:36,905 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:42:36,905 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:42:36,905 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:42:37,156 WARN ]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 19:42:37,467 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:42:37,467 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:42:37,467 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:42:37,468 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:42:37,468 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:42:37,468 INFO ]: With dead ends: 15 [2018-06-22 19:42:37,468 INFO ]: Without dead ends: 15 [2018-06-22 19:42:37,469 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:42:37,469 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:42:37,471 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:42:37,471 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:42:37,472 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:42:37,472 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:42:37,472 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:42:37,472 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:42:37,472 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:42:37,472 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:42:37,473 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:42:37,473 INFO ]: Found error trace [2018-06-22 19:42:37,473 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:42:37,473 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:42:37,473 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:42:37,473 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:42:37,473 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:42:37,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:42:37,474 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:42:37,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:42:37,530 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:42:37,923 WARN ]: Spent 212.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-06-22 19:42:38,101 WARN ]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-06-22 19:42:38,171 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:42:38,171 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:42:38,171 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) [2018-06-22 19:42:38,188 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:42:38,298 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:42:38,298 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:42:38,305 INFO ]: Computing forward predicates... [2018-06-22 19:42:38,348 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 19:42:39,542 WARN ]: Simplifying disjunction of 69984 conjuctions. This might take some time... Received shutdown request... [2018-06-22 19:43:52,516 INFO ]: Timeout while computing interpolants [2018-06-22 19:43:52,716 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:43:52,716 WARN ]: Verification canceled [2018-06-22 19:43:52,720 WARN ]: Timeout [2018-06-22 19:43:52,720 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:43:52 BoogieIcfgContainer [2018-06-22 19:43:52,720 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:43:52,721 INFO ]: Toolchain (without parser) took 80165.55 ms. Allocated memory was 306.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 255.1 MB in the beginning and 1.1 GB in the end (delta: -889.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:43:52,722 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:43:52,722 INFO ]: ChcToBoogie took 56.77 ms. Allocated memory is still 306.7 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 19:43:52,722 INFO ]: Boogie Preprocessor took 57.68 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 251.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 19:43:52,723 INFO ]: RCFGBuilder took 418.45 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 236.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:43:52,723 INFO ]: TraceAbstraction took 79619.26 ms. Allocated memory was 306.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 235.2 MB in the beginning and 1.1 GB in the end (delta: -909.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:43:52,726 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.05 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.77 ms. Allocated memory is still 306.7 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 57.68 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 251.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 418.45 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 236.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 79619.26 ms. Allocated memory was 306.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 235.2 MB in the beginning and 1.1 GB in the end (delta: -909.6 MB). Peak memory consumption was 1.3 GB. 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 69984 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 79.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 47 SDs, 0 SdLazy, 33 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, 3 ImplicationChecksByTransitivity, 1.8s 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, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2052 SizeOfPredicates, 36 NumberOfNonLiveVariables, 295 ConjunctsInSsa, 44 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/PRODUCER_CONSUMMER_luke_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-43-52-742.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMMER_luke_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-43-52-742.csv Completed graceful shutdown