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/FIREFLY_luke_1a_e2_284_e7_998.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 08:14:40,945 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 08:14:40,947 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 08:14:40,958 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 08:14:40,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 08:14:40,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 08:14:40,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 08:14:40,963 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 08:14:40,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 08:14:40,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 08:14:40,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 08:14:40,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 08:14:40,967 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 08:14:40,968 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 08:14:40,969 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 08:14:40,970 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 08:14:40,972 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 08:14:40,974 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 08:14:40,975 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 08:14:40,976 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 08:14:40,978 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 08:14:40,980 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 08:14:40,981 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 08:14:40,981 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 08:14:40,982 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 08:14:40,983 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 08:14:40,984 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 08:14:40,985 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 08:14:40,986 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 08:14:40,986 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 08:14:40,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 08:14:40,988 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 08:14:40,988 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 08:14:40,989 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 08:14:40,990 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 08:14:40,990 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 08:14:41,006 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 08:14:41,006 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 08:14:41,007 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 08:14:41,007 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 08:14:41,008 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 08:14:41,008 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 08:14:41,008 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 08:14:41,009 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 08:14:41,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:14:41,009 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 08:14:41,009 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 08:14:41,010 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 08:14:41,010 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 08:14:41,010 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 08:14:41,010 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 08:14:41,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 08:14:41,011 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 08:14:41,012 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 08:14:41,013 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 08:14:41,068 INFO ]: Repository-Root is: /tmp [2018-06-22 08:14:41,085 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 08:14:41,091 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 08:14:41,092 INFO ]: Initializing SmtParser... [2018-06-22 08:14:41,092 INFO ]: SmtParser initialized [2018-06-22 08:14:41,093 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e7_998.smt2 [2018-06-22 08:14:41,094 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 08:14:41,191 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e7_998.smt2 unknown [2018-06-22 08:14:41,792 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e7_998.smt2 [2018-06-22 08:14:41,797 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 08:14:41,822 INFO ]: Walking toolchain with 4 elements. [2018-06-22 08:14:41,823 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 08:14:41,823 INFO ]: Initializing ChcToBoogie... [2018-06-22 08:14:41,823 INFO ]: ChcToBoogie initialized [2018-06-22 08:14:41,826 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:14:41" (1/1) ... [2018-06-22 08:14:41,925 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41 Unit [2018-06-22 08:14:41,925 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 08:14:41,926 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 08:14:41,926 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 08:14:41,926 INFO ]: Boogie Preprocessor initialized [2018-06-22 08:14:41,945 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (1/1) ... [2018-06-22 08:14:41,945 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (1/1) ... [2018-06-22 08:14:41,954 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (1/1) ... [2018-06-22 08:14:41,954 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (1/1) ... [2018-06-22 08:14:41,964 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (1/1) ... [2018-06-22 08:14:41,965 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (1/1) ... [2018-06-22 08:14:41,968 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (1/1) ... [2018-06-22 08:14:41,973 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 08:14:41,974 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 08:14:41,974 INFO ]: Initializing RCFGBuilder... [2018-06-22 08:14:41,974 INFO ]: RCFGBuilder initialized [2018-06-22 08:14:41,980 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (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 08:14:42,010 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 08:14:42,010 INFO ]: Found specification of procedure gotoProc [2018-06-22 08:14:42,010 INFO ]: Found implementation of procedure gotoProc [2018-06-22 08:14:42,010 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 08:14:42,010 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 08:14:42,010 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 08:14:42,446 INFO ]: Using library mode [2018-06-22 08:14:42,447 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:14:42 BoogieIcfgContainer [2018-06-22 08:14:42,447 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 08:14:42,448 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 08:14:42,449 INFO ]: Initializing TraceAbstraction... [2018-06-22 08:14:42,456 INFO ]: TraceAbstraction initialized [2018-06-22 08:14:42,456 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:14:41" (1/3) ... [2018-06-22 08:14:42,457 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e42d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:14:42, skipping insertion in model container [2018-06-22 08:14:42,457 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:14:41" (2/3) ... [2018-06-22 08:14:42,457 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e42d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:14:42, skipping insertion in model container [2018-06-22 08:14:42,457 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:14:42" (3/3) ... [2018-06-22 08:14:42,459 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 08:14:42,468 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 08:14:42,477 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 08:14:42,534 INFO ]: Using default assertion order modulation [2018-06-22 08:14:42,535 INFO ]: Interprodecural is true [2018-06-22 08:14:42,535 INFO ]: Hoare is false [2018-06-22 08:14:42,535 INFO ]: Compute interpolants for FPandBP [2018-06-22 08:14:42,535 INFO ]: Backedges is TWOTRACK [2018-06-22 08:14:42,535 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 08:14:42,535 INFO ]: Difference is false [2018-06-22 08:14:42,535 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 08:14:42,535 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 08:14:42,546 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 08:14:42,559 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 08:14:42,559 INFO ]: Found error trace [2018-06-22 08:14:42,560 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:14:42,560 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:14:42,566 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 08:14:42,568 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:14:42,568 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:14:42,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:14:42,609 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:14:42,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:14:42,723 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:14:42,869 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:14:42,871 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 08:14:42,871 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 08:14:42,872 INFO ]: Interpolant automaton has 3 states [2018-06-22 08:14:42,883 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 08:14:42,883 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:14:42,886 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 08:14:42,961 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:14:42,961 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 08:14:42,964 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 08:14:42,965 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 08:14:42,966 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:14:42,975 INFO ]: With dead ends: 9 [2018-06-22 08:14:42,976 INFO ]: Without dead ends: 9 [2018-06-22 08:14:42,980 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 08:14:42,998 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 08:14:43,014 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 08:14:43,016 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 08:14:43,016 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 08:14:43,017 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 08:14:43,017 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:14:43,017 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 08:14:43,017 INFO ]: Interpolant automaton has 3 states. [2018-06-22 08:14:43,017 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 08:14:43,018 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 08:14:43,018 INFO ]: Found error trace [2018-06-22 08:14:43,018 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:14:43,018 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:14:43,018 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 08:14:43,018 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:14:43,018 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:14:43,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:14:43,019 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:14:43,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:14:43,173 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:14:43,398 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:14:43,398 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:14:43,398 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 08:14:43,418 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:14:43,604 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:14:43,619 INFO ]: Computing forward predicates... [2018-06-22 08:14:45,096 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 08:14:47,069 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:14:47,073 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:14:47,075 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:14:47,079 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:14:47,137 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:14:47,145 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:14:47,157 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:14:47,217 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:14:47,219 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:14:47,230 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:14:47,248 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:14:47,275 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:14:47,291 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:14:47,359 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:14:47,428 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:14:47,430 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:14:47,433 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:14:47,448 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:14:47,503 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:14:47,551 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:14:47,553 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:14:47,572 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:14:47,573 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:14:47,623 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:14:47,628 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:14:47,642 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:14:47,655 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:14:47,679 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:14:47,749 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:14:47,752 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:14:47,784 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:14:48,728 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:14:48,731 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:14:48,756 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:14:48,758 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:14:48,767 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:14:48,769 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:14:48,773 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:14:48,891 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:14:48,894 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:14:48,902 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:14:48,917 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:14:48,923 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:15:22,850 WARN ]: Spent 531.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 8 [2018-06-22 08:15:22,856 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:15:22,891 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:15:22,891 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 08:15:22,891 INFO ]: Interpolant automaton has 5 states [2018-06-22 08:15:22,891 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 08:15:22,891 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:15:22,892 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 08:15:23,052 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:15:23,053 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 08:15:23,055 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 08:15:23,055 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 08:15:23,055 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:15:23,055 INFO ]: With dead ends: 10 [2018-06-22 08:15:23,055 INFO ]: Without dead ends: 10 [2018-06-22 08:15:23,056 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 08:15:23,056 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 08:15:23,057 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 08:15:23,057 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 08:15:23,057 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 08:15:23,057 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 08:15:23,058 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:15:23,058 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 08:15:23,058 INFO ]: Interpolant automaton has 5 states. [2018-06-22 08:15:23,058 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 08:15:23,058 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 08:15:23,058 INFO ]: Found error trace [2018-06-22 08:15:23,058 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:15:23,058 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:15:23,058 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 08:15:23,058 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:15:23,058 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:15:23,059 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:15:23,059 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:15:23,059 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:15:23,248 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:15:23,602 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2018-06-22 08:15:23,613 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:15:23,614 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:15:23,614 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 08:15:23,620 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 08:15:23,780 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 08:15:23,780 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:15:23,788 INFO ]: Computing forward predicates... [2018-06-22 08:15:25,224 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 08:15:26,396 WARN ]: Simplifying disjunction of 68040 conjuctions. This might take some time... Received shutdown request... [2018-06-22 08:15:47,048 INFO ]: Timeout while computing interpolants [2018-06-22 08:15:47,249 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:15:47,249 WARN ]: Verification canceled [2018-06-22 08:15:47,253 WARN ]: Timeout [2018-06-22 08:15:47,253 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:15:47 BoogieIcfgContainer [2018-06-22 08:15:47,253 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 08:15:47,254 INFO ]: Toolchain (without parser) took 65456.73 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 243.2 MB in the beginning and 1.1 GB in the end (delta: -902.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 08:15:47,255 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 08:15:47,255 INFO ]: ChcToBoogie took 102.54 ms. Allocated memory is still 308.8 MB. Free memory was 243.2 MB in the beginning and 241.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:15:47,256 INFO ]: Boogie Preprocessor took 47.22 ms. Allocated memory is still 308.8 MB. Free memory was 241.3 MB in the beginning and 239.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:15:47,264 INFO ]: RCFGBuilder took 473.22 ms. Allocated memory is still 308.8 MB. Free memory was 239.3 MB in the beginning and 201.3 MB in the end (delta: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 3.6 GB. [2018-06-22 08:15:47,265 INFO ]: TraceAbstraction took 64804.78 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 201.3 MB in the beginning and 1.1 GB in the end (delta: -944.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 08:15:47,267 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 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 102.54 ms. Allocated memory is still 308.8 MB. Free memory was 243.2 MB in the beginning and 241.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.22 ms. Allocated memory is still 308.8 MB. Free memory was 241.3 MB in the beginning and 239.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 473.22 ms. Allocated memory is still 308.8 MB. Free memory was 239.3 MB in the beginning and 201.3 MB in the end (delta: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64804.78 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 201.3 MB in the beginning and 1.1 GB in the end (delta: -944.3 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 68040 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 64.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s 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, 0.3s SatisfiabilityAnalysisTime, 39.6s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 2 NumberOfNonLiveVariables, 652 ConjunctsInSsa, 38 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/FIREFLY_luke_1a_e2_284_e7_998.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_08-15-47-280.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a_e2_284_e7_998.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_08-15-47-280.csv Completed graceful shutdown