java -Xss4m -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_e1_2924.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 15:44:11,107 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 15:44:11,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 15:44:11,119 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 15:44:11,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 15:44:11,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 15:44:11,122 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 15:44:11,123 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 15:44:11,125 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 15:44:11,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 15:44:11,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 15:44:11,127 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 15:44:11,128 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 15:44:11,129 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 15:44:11,129 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 15:44:11,130 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 15:44:11,132 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 15:44:11,134 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 15:44:11,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 15:44:11,142 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 15:44:11,143 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 15:44:11,145 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 15:44:11,146 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 15:44:11,146 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 15:44:11,147 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 15:44:11,148 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 15:44:11,149 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 15:44:11,149 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 15:44:11,160 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 15:44:11,160 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 15:44:11,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 15:44:11,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 15:44:11,162 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 15:44:11,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 15:44:11,163 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 15:44:11,164 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 15:44:11,190 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 15:44:11,190 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 15:44:11,191 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 15:44:11,191 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 15:44:11,194 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 15:44:11,194 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 15:44:11,194 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 15:44:11,195 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 15:44:11,195 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 15:44:11,195 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 15:44:11,195 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 15:44:11,195 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 15:44:11,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 15:44:11,196 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 15:44:11,196 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 15:44:11,196 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 15:44:11,196 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 15:44:11,196 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 15:44:11,197 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 15:44:11,197 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 15:44:11,197 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 15:44:11,200 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 15:44:11,201 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 15:44:11,245 INFO ]: Repository-Root is: /tmp [2018-06-25 15:44:11,262 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 15:44:11,267 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 15:44:11,269 INFO ]: Initializing SmtParser... [2018-06-25 15:44:11,269 INFO ]: SmtParser initialized [2018-06-25 15:44:11,269 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e1_2924.smt2 [2018-06-25 15:44:11,271 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 [2018-06-25 15:44:11,359 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e1_2924.smt2 unknown [2018-06-25 15:44:11,921 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e1_2924.smt2 [2018-06-25 15:44:11,926 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 15:44:11,931 INFO ]: Walking toolchain with 4 elements. [2018-06-25 15:44:11,932 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 15:44:11,932 INFO ]: Initializing ChcToBoogie... [2018-06-25 15:44:11,932 INFO ]: ChcToBoogie initialized [2018-06-25 15:44:11,935 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:44:11" (1/1) ... [2018-06-25 15:44:12,005 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12 Unit [2018-06-25 15:44:12,005 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 15:44:12,006 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 15:44:12,006 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 15:44:12,006 INFO ]: Boogie Preprocessor initialized [2018-06-25 15:44:12,028 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (1/1) ... [2018-06-25 15:44:12,028 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (1/1) ... [2018-06-25 15:44:12,052 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (1/1) ... [2018-06-25 15:44:12,052 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (1/1) ... [2018-06-25 15:44:12,073 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (1/1) ... [2018-06-25 15:44:12,075 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (1/1) ... [2018-06-25 15:44:12,077 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (1/1) ... [2018-06-25 15:44:12,081 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 15:44:12,082 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 15:44:12,082 INFO ]: Initializing RCFGBuilder... [2018-06-25 15:44:12,082 INFO ]: RCFGBuilder initialized [2018-06-25 15:44:12,083 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (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) [2018-06-25 15:44:12,113 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 15:44:12,113 INFO ]: Found specification of procedure gotoProc [2018-06-25 15:44:12,113 INFO ]: Found implementation of procedure gotoProc [2018-06-25 15:44:12,113 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 15:44:12,113 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 15:44:12,113 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 [2018-06-25 15:44:12,559 INFO ]: Using library mode [2018-06-25 15:44:12,561 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:44:12 BoogieIcfgContainer [2018-06-25 15:44:12,561 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 15:44:12,562 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 15:44:12,562 INFO ]: Initializing TraceAbstraction... [2018-06-25 15:44:12,567 INFO ]: TraceAbstraction initialized [2018-06-25 15:44:12,567 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:44:11" (1/3) ... [2018-06-25 15:44:12,568 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64769760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 03:44:12, skipping insertion in model container [2018-06-25 15:44:12,568 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:44:12" (2/3) ... [2018-06-25 15:44:12,568 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64769760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 03:44:12, skipping insertion in model container [2018-06-25 15:44:12,568 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:44:12" (3/3) ... [2018-06-25 15:44:12,570 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 15:44:12,579 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 15:44:12,589 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 15:44:12,638 INFO ]: Using default assertion order modulation [2018-06-25 15:44:12,639 INFO ]: Interprodecural is true [2018-06-25 15:44:12,639 INFO ]: Hoare is false [2018-06-25 15:44:12,639 INFO ]: Compute interpolants for FPandBP [2018-06-25 15:44:12,639 INFO ]: Backedges is TWOTRACK [2018-06-25 15:44:12,639 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 15:44:12,639 INFO ]: Difference is false [2018-06-25 15:44:12,639 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 15:44:12,639 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 15:44:12,655 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 15:44:12,665 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 15:44:12,665 INFO ]: Found error trace [2018-06-25 15:44:12,666 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:44:12,666 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:44:12,670 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 15:44:12,671 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:44:12,672 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:44:12,706 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:44:12,706 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:44:12,706 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:44:12,839 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:44:13,005 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:44:13,008 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 15:44:13,008 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 15:44:13,010 INFO ]: Interpolant automaton has 3 states [2018-06-25 15:44:13,026 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 15:44:13,026 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 15:44:13,029 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 15:44:13,127 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:44:13,127 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 15:44:13,129 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 15:44:13,131 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 15:44:13,131 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:44:13,143 INFO ]: With dead ends: 9 [2018-06-25 15:44:13,143 INFO ]: Without dead ends: 9 [2018-06-25 15:44:13,145 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 [2018-06-25 15:44:13,163 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 15:44:13,189 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 15:44:13,192 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 15:44:13,192 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 15:44:13,193 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 15:44:13,194 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:44:13,194 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 15:44:13,194 INFO ]: Interpolant automaton has 3 states. [2018-06-25 15:44:13,194 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 15:44:13,194 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 15:44:13,194 INFO ]: Found error trace [2018-06-25 15:44:13,194 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:44:13,194 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:44:13,194 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 15:44:13,194 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:44:13,194 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:44:13,196 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:44:13,196 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:44:13,196 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:44:13,337 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:44:13,518 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:44:13,518 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:44:13,518 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 [2018-06-25 15:44:13,529 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:44:13,742 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:44:13,758 INFO ]: Computing forward predicates... [2018-06-25 15:44:15,167 WARN ]: expecting exponential blowup for input size 15 [2018-06-25 15:44:15,536 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:44:15,539 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:44:15,542 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:44:15,546 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:44:15,591 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:44:15,597 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 15:44:15,603 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 15:44:15,656 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:44:15,657 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:44:15,667 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:15,688 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:15,713 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:44:15,736 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:44:15,800 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:44:15,893 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:44:15,894 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:44:15,897 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:44:15,913 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:44:15,956 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:15,965 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:44:15,966 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:44:15,984 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:44:15,985 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:44:16,046 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:16,049 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:16,056 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:44:16,064 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:16,080 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:44:16,167 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:44:16,168 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 15:44:16,204 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:44:17,079 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:44:17,080 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:44:17,106 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:17,107 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:44:17,116 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:44:17,118 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:44:17,122 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:44:17,247 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:44:17,250 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:44:17,260 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:44:17,276 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:44:17,283 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:52,780 WARN ]: Spent 408.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 8 [2018-06-25 15:44:52,783 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:44:52,811 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:44:52,812 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 15:44:52,812 INFO ]: Interpolant automaton has 5 states [2018-06-25 15:44:52,812 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 15:44:52,812 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:44:52,812 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 15:44:52,847 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:44:52,847 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 15:44:52,847 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 15:44:52,847 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 15:44:52,847 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:44:52,848 INFO ]: With dead ends: 10 [2018-06-25 15:44:52,848 INFO ]: Without dead ends: 10 [2018-06-25 15:44:52,849 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:44:52,849 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 15:44:52,850 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 15:44:52,850 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 15:44:52,850 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 15:44:52,850 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 15:44:52,850 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:44:52,850 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 15:44:52,850 INFO ]: Interpolant automaton has 5 states. [2018-06-25 15:44:52,850 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 15:44:52,850 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 15:44:52,851 INFO ]: Found error trace [2018-06-25 15:44:52,851 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:44:52,851 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:44:52,851 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 15:44:52,851 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:44:52,851 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:44:52,852 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:44:52,852 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:44:52,852 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:44:52,969 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:44:53,213 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:44:53,213 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:44:53,213 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 [2018-06-25 15:44:53,220 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 15:44:53,406 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 15:44:53,406 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:44:53,419 INFO ]: Computing forward predicates... [2018-06-25 15:44:54,647 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:44:54,650 WARN ]: expecting exponential blowup for input size 17 Received shutdown request... [2018-06-25 15:45:10,657 INFO ]: Timeout while computing interpolants [2018-06-25 15:45:10,857 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:45:10,857 WARN ]: Verification canceled [2018-06-25 15:45:10,861 WARN ]: Timeout [2018-06-25 15:45:10,861 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 03:45:10 BoogieIcfgContainer [2018-06-25 15:45:10,861 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 15:45:10,862 INFO ]: Toolchain (without parser) took 58935.89 ms. Allocated memory was 309.3 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 243.6 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 3.6 GB. [2018-06-25 15:45:10,864 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 15:45:10,864 INFO ]: ChcToBoogie took 73.71 ms. Allocated memory is still 309.3 MB. Free memory was 242.6 MB in the beginning and 239.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:45:10,865 INFO ]: Boogie Preprocessor took 75.70 ms. Allocated memory is still 309.3 MB. Free memory was 239.6 MB in the beginning and 237.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-25 15:45:10,865 INFO ]: RCFGBuilder took 479.10 ms. Allocated memory is still 309.3 MB. Free memory was 237.6 MB in the beginning and 201.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 3.6 GB. [2018-06-25 15:45:10,865 INFO ]: TraceAbstraction took 58298.95 ms. Allocated memory was 309.3 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 200.4 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 3.6 GB. [2018-06-25 15:45:10,871 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 73.71 ms. Allocated memory is still 309.3 MB. Free memory was 242.6 MB in the beginning and 239.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 75.70 ms. Allocated memory is still 309.3 MB. Free memory was 239.6 MB in the beginning and 237.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 479.10 ms. Allocated memory is still 309.3 MB. Free memory was 237.6 MB in the beginning and 201.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58298.95 ms. Allocated memory was 309.3 MB in the beginning and 2.6 GB in the end (delta: 2.3 GB). Free memory was 200.4 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 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 transforming 17 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 58.2s 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s 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, 39.3s 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_e1_2924.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_15-45-10-882.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a_e2_284_e1_2924.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_15-45-10-882.csv Completed graceful shutdown