java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e6_2281.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 08:51:18,989 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 08:51:18,991 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 08:51:19,008 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 08:51:19,008 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 08:51:19,011 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 08:51:19,012 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 08:51:19,014 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 08:51:19,015 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 08:51:19,016 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 08:51:19,018 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 08:51:19,018 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 08:51:19,019 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 08:51:19,020 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 08:51:19,020 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 08:51:19,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 08:51:19,025 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 08:51:19,034 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 08:51:19,035 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 08:51:19,036 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 08:51:19,037 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 08:51:19,043 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 08:51:19,043 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 08:51:19,043 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 08:51:19,044 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 08:51:19,045 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 08:51:19,045 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 08:51:19,046 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 08:51:19,050 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 08:51:19,050 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 08:51:19,051 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 08:51:19,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 08:51:19,052 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 08:51:19,053 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 08:51:19,053 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 08:51:19,053 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 08:51:19,073 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 08:51:19,074 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 08:51:19,074 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 08:51:19,074 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 08:51:19,076 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 08:51:19,076 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 08:51:19,076 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 08:51:19,076 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 08:51:19,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:51:19,077 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 08:51:19,077 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 08:51:19,077 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 08:51:19,077 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 08:51:19,078 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 08:51:19,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 08:51:19,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 08:51:19,078 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 08:51:19,082 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 08:51:19,082 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 08:51:19,132 INFO ]: Repository-Root is: /tmp [2018-06-22 08:51:19,149 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 08:51:19,153 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 08:51:19,154 INFO ]: Initializing SmtParser... [2018-06-22 08:51:19,154 INFO ]: SmtParser initialized [2018-06-22 08:51:19,155 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e6_2281.smt2 [2018-06-22 08:51:19,156 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 08:51:19,254 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e6_2281.smt2 unknown [2018-06-22 08:51:19,657 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e6_2281.smt2 [2018-06-22 08:51:19,662 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 08:51:19,669 INFO ]: Walking toolchain with 4 elements. [2018-06-22 08:51:19,669 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 08:51:19,669 INFO ]: Initializing ChcToBoogie... [2018-06-22 08:51:19,669 INFO ]: ChcToBoogie initialized [2018-06-22 08:51:19,673 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:51:19" (1/1) ... [2018-06-22 08:51:19,737 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19 Unit [2018-06-22 08:51:19,737 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 08:51:19,738 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 08:51:19,738 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 08:51:19,738 INFO ]: Boogie Preprocessor initialized [2018-06-22 08:51:19,762 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (1/1) ... [2018-06-22 08:51:19,762 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (1/1) ... [2018-06-22 08:51:19,770 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (1/1) ... [2018-06-22 08:51:19,770 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (1/1) ... [2018-06-22 08:51:19,777 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (1/1) ... [2018-06-22 08:51:19,779 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (1/1) ... [2018-06-22 08:51:19,781 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (1/1) ... [2018-06-22 08:51:19,785 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 08:51:19,785 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 08:51:19,785 INFO ]: Initializing RCFGBuilder... [2018-06-22 08:51:19,785 INFO ]: RCFGBuilder initialized [2018-06-22 08:51:19,786 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (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 08:51:19,799 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 08:51:19,799 INFO ]: Found specification of procedure gotoProc [2018-06-22 08:51:19,799 INFO ]: Found implementation of procedure gotoProc [2018-06-22 08:51:19,799 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 08:51:19,799 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 08:51:19,800 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 08:51:20,259 INFO ]: Using library mode [2018-06-22 08:51:20,260 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:51:20 BoogieIcfgContainer [2018-06-22 08:51:20,260 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 08:51:20,262 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 08:51:20,262 INFO ]: Initializing TraceAbstraction... [2018-06-22 08:51:20,270 INFO ]: TraceAbstraction initialized [2018-06-22 08:51:20,270 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:51:19" (1/3) ... [2018-06-22 08:51:20,271 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4523faa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:51:20, skipping insertion in model container [2018-06-22 08:51:20,271 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:51:19" (2/3) ... [2018-06-22 08:51:20,271 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4523faa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:51:20, skipping insertion in model container [2018-06-22 08:51:20,271 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:51:20" (3/3) ... [2018-06-22 08:51:20,273 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 08:51:20,279 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 08:51:20,289 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 08:51:20,332 INFO ]: Using default assertion order modulation [2018-06-22 08:51:20,333 INFO ]: Interprodecural is true [2018-06-22 08:51:20,333 INFO ]: Hoare is false [2018-06-22 08:51:20,333 INFO ]: Compute interpolants for FPandBP [2018-06-22 08:51:20,333 INFO ]: Backedges is TWOTRACK [2018-06-22 08:51:20,333 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 08:51:20,333 INFO ]: Difference is false [2018-06-22 08:51:20,333 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 08:51:20,333 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 08:51:20,350 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 08:51:20,365 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 08:51:20,365 INFO ]: Found error trace [2018-06-22 08:51:20,366 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:51:20,366 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:51:20,372 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 08:51:20,374 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:51:20,375 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:51:20,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:51:20,411 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:51:20,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:51:20,515 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:51:20,683 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:51:20,686 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 08:51:20,686 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 08:51:20,688 INFO ]: Interpolant automaton has 3 states [2018-06-22 08:51:20,706 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 08:51:20,707 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:51:20,710 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 08:51:20,801 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:51:20,801 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 08:51:20,802 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 08:51:20,803 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 08:51:20,803 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:51:20,813 INFO ]: With dead ends: 9 [2018-06-22 08:51:20,813 INFO ]: Without dead ends: 9 [2018-06-22 08:51:20,815 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:51:20,835 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 08:51:20,853 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 08:51:20,854 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 08:51:20,855 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 08:51:20,856 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 08:51:20,856 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:51:20,856 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 08:51:20,856 INFO ]: Interpolant automaton has 3 states. [2018-06-22 08:51:20,856 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 08:51:20,857 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 08:51:20,857 INFO ]: Found error trace [2018-06-22 08:51:20,857 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:51:20,857 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:51:20,857 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 08:51:20,857 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:51:20,857 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:51:20,858 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:51:20,858 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:51:20,858 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:51:20,966 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:51:21,472 WARN ]: Spent 204.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-06-22 08:51:21,474 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:51:21,474 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:51:21,474 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) [2018-06-22 08:51:21,490 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:51:21,660 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:51:21,676 INFO ]: Computing forward predicates... [2018-06-22 08:51:22,367 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:51:22,380 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:22,422 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:22,443 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:51:23,012 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 08:51:23,116 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 08:51:24,960 INFO ]: Simplified to disjunction of 3456 conjuctions. [2018-06-22 08:51:24,988 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:51:25,453 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:51:25,546 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:51:25,626 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:51:26,099 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:51:26,130 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:26,132 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:26,133 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:51:26,441 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:51:26,461 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 08:51:27,858 INFO ]: Simplified to disjunction of 3456 conjuctions. [2018-06-22 08:51:27,869 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:51:27,872 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:51:27,875 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:51:27,887 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:27,888 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:51:28,056 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:51:28,130 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:28,131 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:28,132 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:51:28,135 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:28,178 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:51:28,179 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:51:28,180 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:51:28,183 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:51:28,194 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:51:28,197 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:51:38,067 WARN ]: Spent 301.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 15 [2018-06-22 08:51:38,070 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:51:38,092 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:51:38,092 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 08:51:38,093 INFO ]: Interpolant automaton has 5 states [2018-06-22 08:51:38,093 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 08:51:38,093 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:51:38,093 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 08:51:38,138 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:51:38,138 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 08:51:38,139 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 08:51:38,139 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 08:51:38,139 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:51:38,139 INFO ]: With dead ends: 10 [2018-06-22 08:51:38,139 INFO ]: Without dead ends: 10 [2018-06-22 08:51:38,140 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:51:38,140 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 08:51:38,141 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 08:51:38,141 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 08:51:38,141 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 08:51:38,141 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 08:51:38,141 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:51:38,141 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 08:51:38,141 INFO ]: Interpolant automaton has 5 states. [2018-06-22 08:51:38,141 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 08:51:38,141 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 08:51:38,141 INFO ]: Found error trace [2018-06-22 08:51:38,142 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:51:38,142 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:51:38,142 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 08:51:38,142 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:51:38,142 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:51:38,143 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:51:38,143 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:51:38,143 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:51:38,237 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:51:38,983 WARN ]: Spent 482.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2018-06-22 08:51:39,004 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:51:39,004 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:51:39,004 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 08:51:39,011 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 08:51:39,133 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 08:51:39,133 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:51:39,140 INFO ]: Computing forward predicates... [2018-06-22 08:51:43,830 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:51:43,830 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 08:51:44,048 WARN ]: Simplifying disjunction of 23040 conjuctions. This might take some time... Received shutdown request... [2018-06-22 08:52:27,581 INFO ]: Timeout while computing interpolants [2018-06-22 08:52:27,782 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:52:27,782 WARN ]: Verification canceled [2018-06-22 08:52:27,787 WARN ]: Timeout [2018-06-22 08:52:27,787 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:52:27 BoogieIcfgContainer [2018-06-22 08:52:27,787 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 08:52:27,788 INFO ]: Toolchain (without parser) took 68125.20 ms. Allocated memory was 303.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.4 MB in the beginning and 1.0 GB in the end (delta: -755.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 08:52:27,789 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 08:52:27,789 INFO ]: ChcToBoogie took 68.15 ms. Allocated memory is still 303.0 MB. Free memory was 245.4 MB in the beginning and 242.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:52:27,790 INFO ]: Boogie Preprocessor took 47.02 ms. Allocated memory is still 303.0 MB. Free memory was 242.4 MB in the beginning and 240.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 08:52:27,790 INFO ]: RCFGBuilder took 474.83 ms. Allocated memory is still 303.0 MB. Free memory was 240.4 MB in the beginning and 213.3 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. [2018-06-22 08:52:27,791 INFO ]: TraceAbstraction took 67525.20 ms. Allocated memory was 303.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 213.3 MB in the beginning and 1.0 GB in the end (delta: -788.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 08:52:27,805 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.15 ms. Allocated memory is still 303.0 MB. Free memory was 245.4 MB in the beginning and 242.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.02 ms. Allocated memory is still 303.0 MB. Free memory was 242.4 MB in the beginning and 240.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 474.83 ms. Allocated memory is still 303.0 MB. Free memory was 240.4 MB in the beginning and 213.3 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67525.20 ms. Allocated memory was 303.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 213.3 MB in the beginning and 1.0 GB in the end (delta: -788.2 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 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 23040 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 67.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 497 SizeOfPredicates, 4 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_i3_e1_447_e6_2281.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_08-52-27-820.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_i3_e1_447_e6_2281.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_08-52-27-820.csv Completed graceful shutdown