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_e7_1068_e8_1019.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:41:50,563 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:41:50,565 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:41:50,582 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:41:50,582 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:41:50,583 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:41:50,585 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:41:50,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:41:50,589 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:41:50,589 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:41:50,591 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:41:50,591 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:41:50,592 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:41:50,593 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:41:50,596 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:41:50,597 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:41:50,598 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:41:50,608 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:41:50,609 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:41:50,610 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:41:50,611 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:41:50,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:41:50,617 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:41:50,617 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:41:50,618 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:41:50,618 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:41:50,619 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:41:50,619 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:41:50,624 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:41:50,624 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:41:50,624 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:41:50,625 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:41:50,625 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:41:50,629 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:41:50,630 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:41:50,631 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 19:41:50,644 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:41:50,644 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:41:50,644 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:41:50,645 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:41:50,646 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:41:50,646 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:41:50,646 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:41:50,646 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:41:50,647 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:41:50,647 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:41:50,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:41:50,647 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:41:50,647 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:41:50,648 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:41:50,648 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:41:50,648 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:41:50,648 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:41:50,648 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:41:50,648 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:41:50,650 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:41:50,650 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:41:50,700 INFO ]: Repository-Root is: /tmp [2018-06-22 19:41:50,714 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:41:50,719 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:41:50,720 INFO ]: Initializing SmtParser... [2018-06-22 19:41:50,721 INFO ]: SmtParser initialized [2018-06-22 19:41:50,721 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2_e7_1068_e8_1019.smt2 [2018-06-22 19:41:50,722 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 19:41:50,804 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2_e7_1068_e8_1019.smt2 unknown [2018-06-22 19:41:51,127 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2_e7_1068_e8_1019.smt2 [2018-06-22 19:41:51,132 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:41:51,137 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:41:51,137 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:41:51,137 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:41:51,138 INFO ]: ChcToBoogie initialized [2018-06-22 19:41:51,141 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:41:51" (1/1) ... [2018-06-22 19:41:51,195 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51 Unit [2018-06-22 19:41:51,197 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:41:51,198 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:41:51,198 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:41:51,198 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:41:51,219 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (1/1) ... [2018-06-22 19:41:51,220 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (1/1) ... [2018-06-22 19:41:51,228 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (1/1) ... [2018-06-22 19:41:51,236 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (1/1) ... [2018-06-22 19:41:51,240 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (1/1) ... [2018-06-22 19:41:51,241 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (1/1) ... [2018-06-22 19:41:51,252 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (1/1) ... [2018-06-22 19:41:51,254 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:41:51,255 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:41:51,255 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:41:51,255 INFO ]: RCFGBuilder initialized [2018-06-22 19:41:51,255 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:41:51,275 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:41:51,275 INFO ]: Found specification of procedure False [2018-06-22 19:41:51,275 INFO ]: Found implementation of procedure False [2018-06-22 19:41:51,275 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:41:51,275 INFO ]: Found specification of procedure state [2018-06-22 19:41:51,276 INFO ]: Found implementation of procedure state [2018-06-22 19:41:51,276 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:41:51,276 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:41:51,276 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:41:51,668 INFO ]: Using library mode [2018-06-22 19:41:51,669 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:41:51 BoogieIcfgContainer [2018-06-22 19:41:51,669 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:41:51,672 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:41:51,672 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:41:51,676 INFO ]: TraceAbstraction initialized [2018-06-22 19:41:51,676 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:41:51" (1/3) ... [2018-06-22 19:41:51,677 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e8f2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:41:51, skipping insertion in model container [2018-06-22 19:41:51,678 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:51" (2/3) ... [2018-06-22 19:41:51,678 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e8f2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:41:51, skipping insertion in model container [2018-06-22 19:41:51,678 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:41:51" (3/3) ... [2018-06-22 19:41:51,680 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:41:51,691 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:41:51,702 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:41:51,750 INFO ]: Using default assertion order modulation [2018-06-22 19:41:51,751 INFO ]: Interprodecural is true [2018-06-22 19:41:51,751 INFO ]: Hoare is false [2018-06-22 19:41:51,751 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:41:51,751 INFO ]: Backedges is TWOTRACK [2018-06-22 19:41:51,751 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:41:51,751 INFO ]: Difference is false [2018-06-22 19:41:51,751 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:41:51,751 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:41:51,770 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:41:51,784 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:41:51,784 INFO ]: Found error trace [2018-06-22 19:41:51,785 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:41:51,785 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:41:51,789 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:41:51,790 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:41:51,791 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:41:51,836 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:51,836 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:41:51,836 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:51,917 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:52,125 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:41:52,128 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:41:52,128 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:41:52,129 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:41:52,141 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:41:52,142 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:41:52,144 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:41:52,265 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:41:52,265 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:41:52,266 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:41:52,268 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:41:52,268 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:41:52,284 INFO ]: With dead ends: 13 [2018-06-22 19:41:52,284 INFO ]: Without dead ends: 13 [2018-06-22 19:41:52,286 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 19:41:52,303 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:41:52,322 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:41:52,323 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:41:52,324 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:41:52,325 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:41:52,325 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:41:52,325 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:41:52,325 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:41:52,325 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:41:52,327 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:41:52,327 INFO ]: Found error trace [2018-06-22 19:41:52,327 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:41:52,327 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:41:52,328 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:41:52,328 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:41:52,328 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:41:52,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:52,329 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:41:52,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:52,396 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:53,268 WARN ]: Spent 657.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2018-06-22 19:41:53,380 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 19:41:53,413 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:41:53,413 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:41:53,413 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 19:41:53,420 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:41:53,487 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:53,498 INFO ]: Computing forward predicates... [2018-06-22 19:41:53,703 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:41:53,721 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:41:53,739 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:41:54,895 WARN ]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 19:41:54,956 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:41:54,990 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:41:54,990 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:41:54,991 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:41:54,991 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:41:54,991 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:41:54,991 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:41:55,276 WARN ]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2018-06-22 19:41:55,436 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:41:55,436 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:41:55,437 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:41:55,437 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:41:55,437 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:41:55,438 INFO ]: With dead ends: 15 [2018-06-22 19:41:55,438 INFO ]: Without dead ends: 15 [2018-06-22 19:41:55,438 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:41:55,439 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:41:55,441 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:41:55,441 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:41:55,442 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:41:55,442 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:41:55,442 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:41:55,442 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:41:55,442 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:41:55,442 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:41:55,442 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:41:55,443 INFO ]: Found error trace [2018-06-22 19:41:55,443 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:41:55,443 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:41:55,443 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:41:55,443 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:41:55,443 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:41:55,444 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:55,444 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:41:55,444 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:55,520 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:55,947 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2018-06-22 19:41:56,202 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-06-22 19:41:56,274 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:41:56,274 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:41:56,274 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 19:41:56,292 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:41:56,392 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:41:56,392 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:56,400 INFO ]: Computing forward predicates... [2018-06-22 19:41:56,437 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 19:41:57,558 WARN ]: Simplifying disjunction of 69984 conjuctions. This might take some time... Received shutdown request... [2018-06-22 19:43:11,276 INFO ]: Timeout while computing interpolants [2018-06-22 19:43:11,477 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:43:11,477 WARN ]: Verification canceled [2018-06-22 19:43:11,483 WARN ]: Timeout [2018-06-22 19:43:11,483 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:43:11 BoogieIcfgContainer [2018-06-22 19:43:11,483 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:43:11,484 INFO ]: Toolchain (without parser) took 80352.14 ms. Allocated memory was 299.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 248.3 MB in the beginning and 172.6 MB in the end (delta: 75.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:43:11,488 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 299.9 MB. Free memory is still 264.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:43:11,488 INFO ]: ChcToBoogie took 60.33 ms. Allocated memory is still 299.9 MB. Free memory was 248.3 MB in the beginning and 244.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:43:11,488 INFO ]: Boogie Preprocessor took 56.03 ms. Allocated memory is still 299.9 MB. Free memory is still 244.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:43:11,489 INFO ]: RCFGBuilder took 414.10 ms. Allocated memory is still 299.9 MB. Free memory was 244.3 MB in the beginning and 228.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:43:11,489 INFO ]: TraceAbstraction took 79811.56 ms. Allocated memory was 299.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 228.3 MB in the beginning and 172.6 MB in the end (delta: 55.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:43:11,491 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 299.9 MB. Free memory is still 264.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.33 ms. Allocated memory is still 299.9 MB. Free memory was 248.3 MB in the beginning and 244.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.03 ms. Allocated memory is still 299.9 MB. Free memory is still 244.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 414.10 ms. Allocated memory is still 299.9 MB. Free memory was 244.3 MB in the beginning and 228.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 79811.56 ms. Allocated memory was 299.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 228.3 MB in the beginning and 172.6 MB in the end (delta: 55.7 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, 79.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s 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, 1.4s 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, 0.1s SatisfiabilityAnalysisTime, 2.6s 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_e7_1068_e8_1019.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-43-11-507.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMMER_luke_2_e7_1068_e8_1019.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-43-11-507.csv Completed graceful shutdown