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_11_e1_3457.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 15:06:18,784 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 15:06:18,787 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 15:06:18,799 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 15:06:18,800 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 15:06:18,800 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 15:06:18,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 15:06:18,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 15:06:18,807 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 15:06:18,809 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 15:06:18,809 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 15:06:18,810 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 15:06:18,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 15:06:18,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 15:06:18,815 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 15:06:18,816 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 15:06:18,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 15:06:18,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 15:06:18,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 15:06:18,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 15:06:18,830 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 15:06:18,836 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 15:06:18,836 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 15:06:18,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 15:06:18,837 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 15:06:18,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 15:06:18,838 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 15:06:18,841 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 15:06:18,842 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 15:06:18,842 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 15:06:18,843 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 15:06:18,844 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 15:06:18,844 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 15:06:18,844 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 15:06:18,848 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 15:06:18,849 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 15:06:18,872 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 15:06:18,873 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 15:06:18,873 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 15:06:18,873 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 15:06:18,874 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 15:06:18,874 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 15:06:18,875 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 15:06:18,875 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 15:06:18,875 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 15:06:18,875 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 15:06:18,875 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 15:06:18,876 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 15:06:18,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 15:06:18,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 15:06:18,877 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 15:06:18,877 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 15:06:18,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 15:06:18,878 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 15:06:18,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 15:06:18,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 15:06:18,878 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 15:06:18,880 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 15:06:18,881 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 15:06:18,931 INFO ]: Repository-Root is: /tmp [2018-06-25 15:06:18,947 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 15:06:18,952 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 15:06:18,953 INFO ]: Initializing SmtParser... [2018-06-25 15:06:18,954 INFO ]: SmtParser initialized [2018-06-25 15:06:18,954 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_11_e1_3457.smt2 [2018-06-25 15:06:18,955 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 15:06:19,040 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_11_e1_3457.smt2 unknown [2018-06-25 15:06:19,615 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_11_e1_3457.smt2 [2018-06-25 15:06:19,619 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 15:06:19,634 INFO ]: Walking toolchain with 4 elements. [2018-06-25 15:06:19,635 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 15:06:19,635 INFO ]: Initializing ChcToBoogie... [2018-06-25 15:06:19,635 INFO ]: ChcToBoogie initialized [2018-06-25 15:06:19,638 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:06:19" (1/1) ... [2018-06-25 15:06:19,736 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19 Unit [2018-06-25 15:06:19,736 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 15:06:19,737 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 15:06:19,737 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 15:06:19,737 INFO ]: Boogie Preprocessor initialized [2018-06-25 15:06:19,757 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (1/1) ... [2018-06-25 15:06:19,757 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (1/1) ... [2018-06-25 15:06:19,780 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (1/1) ... [2018-06-25 15:06:19,780 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (1/1) ... [2018-06-25 15:06:19,787 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (1/1) ... [2018-06-25 15:06:19,797 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (1/1) ... [2018-06-25 15:06:19,800 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (1/1) ... [2018-06-25 15:06:19,804 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 15:06:19,804 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 15:06:19,804 INFO ]: Initializing RCFGBuilder... [2018-06-25 15:06:19,804 INFO ]: RCFGBuilder initialized [2018-06-25 15:06:19,805 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 15:06:19,826 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 15:06:19,827 INFO ]: Found specification of procedure gotoProc [2018-06-25 15:06:19,827 INFO ]: Found implementation of procedure gotoProc [2018-06-25 15:06:19,827 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 15:06:19,827 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 15:06:19,827 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 15:06:20,338 INFO ]: Using library mode [2018-06-25 15:06:20,340 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:06:20 BoogieIcfgContainer [2018-06-25 15:06:20,340 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 15:06:20,341 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 15:06:20,341 INFO ]: Initializing TraceAbstraction... [2018-06-25 15:06:20,345 INFO ]: TraceAbstraction initialized [2018-06-25 15:06:20,345 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:06:19" (1/3) ... [2018-06-25 15:06:20,346 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e997ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 03:06:20, skipping insertion in model container [2018-06-25 15:06:20,346 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:06:19" (2/3) ... [2018-06-25 15:06:20,346 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e997ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 03:06:20, skipping insertion in model container [2018-06-25 15:06:20,347 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:06:20" (3/3) ... [2018-06-25 15:06:20,348 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 15:06:20,358 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 15:06:20,367 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 15:06:20,416 INFO ]: Using default assertion order modulation [2018-06-25 15:06:20,417 INFO ]: Interprodecural is true [2018-06-25 15:06:20,417 INFO ]: Hoare is false [2018-06-25 15:06:20,417 INFO ]: Compute interpolants for FPandBP [2018-06-25 15:06:20,417 INFO ]: Backedges is TWOTRACK [2018-06-25 15:06:20,417 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 15:06:20,417 INFO ]: Difference is false [2018-06-25 15:06:20,417 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 15:06:20,417 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 15:06:20,435 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 15:06:20,448 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 15:06:20,449 INFO ]: Found error trace [2018-06-25 15:06:20,450 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:06:20,450 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:06:20,455 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 15:06:20,458 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:06:20,458 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:06:20,504 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:06:20,504 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:06:20,504 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:06:20,657 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:06:20,844 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:06:20,847 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 15:06:20,848 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 15:06:20,850 INFO ]: Interpolant automaton has 3 states [2018-06-25 15:06:20,865 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 15:06:20,865 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 15:06:20,868 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 15:06:20,942 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:06:20,942 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 15:06:20,943 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 15:06:20,944 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 15:06:20,944 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:06:20,956 INFO ]: With dead ends: 9 [2018-06-25 15:06:20,956 INFO ]: Without dead ends: 9 [2018-06-25 15:06:20,957 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 15:06:20,975 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 15:06:21,004 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 15:06:21,005 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 15:06:21,006 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 15:06:21,007 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 15:06:21,007 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:06:21,007 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 15:06:21,007 INFO ]: Interpolant automaton has 3 states. [2018-06-25 15:06:21,008 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 15:06:21,008 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 15:06:21,008 INFO ]: Found error trace [2018-06-25 15:06:21,008 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:06:21,008 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:06:21,008 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 15:06:21,008 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:06:21,008 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:06:21,009 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:06:21,009 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:06:21,009 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:06:21,117 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:06:21,281 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:06:21,281 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:06:21,281 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 15:06:21,288 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:06:21,515 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:06:21,528 INFO ]: Computing forward predicates... [2018-06-25 15:06:22,935 WARN ]: expecting exponential blowup for input size 15 [2018-06-25 15:06:23,711 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:06:23,717 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:06:23,720 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:06:23,727 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:06:23,804 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:06:23,814 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 15:06:23,823 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 15:06:23,898 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:06:23,900 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:06:23,913 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:06:23,943 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:06:23,977 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:06:24,002 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:06:24,135 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:06:24,272 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:06:24,275 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:06:24,278 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:06:24,299 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:06:24,372 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:06:24,386 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:06:24,388 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:06:24,409 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:06:24,410 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:06:24,471 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:06:24,474 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:06:24,483 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:06:24,501 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:06:24,520 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:06:24,620 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:06:24,621 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 15:06:24,667 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:06:25,672 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:06:25,674 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:06:25,691 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:06:25,692 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:06:25,698 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:06:25,699 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:06:25,703 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:06:25,804 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:06:25,805 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:06:25,817 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:06:25,835 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:06:25,839 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:06:55,457 WARN ]: Spent 407.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 8 [2018-06-25 15:06:55,460 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:06:55,482 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:06:55,482 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 15:06:55,483 INFO ]: Interpolant automaton has 5 states [2018-06-25 15:06:55,483 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 15:06:55,483 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:06:55,483 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 15:06:55,539 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:06:55,539 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 15:06:55,539 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 15:06:55,539 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 15:06:55,539 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:06:55,539 INFO ]: With dead ends: 10 [2018-06-25 15:06:55,539 INFO ]: Without dead ends: 10 [2018-06-25 15:06:55,540 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 15:06:55,540 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 15:06:55,541 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 15:06:55,541 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 15:06:55,541 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 15:06:55,542 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 15:06:55,542 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:06:55,542 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 15:06:55,542 INFO ]: Interpolant automaton has 5 states. [2018-06-25 15:06:55,542 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 15:06:55,542 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 15:06:55,542 INFO ]: Found error trace [2018-06-25 15:06:55,542 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:06:55,542 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:06:55,543 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 15:06:55,543 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:06:55,543 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:06:55,544 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:06:55,544 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:06:55,544 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:06:55,725 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:06:56,248 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2018-06-25 15:06:56,266 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:06:56,266 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:06:56,266 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 15:06:56,274 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 15:06:56,444 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 15:06:56,444 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:06:56,452 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-25 15:07:25,052 INFO ]: Timeout while computing interpolants [2018-06-25 15:07:25,253 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:07:25,253 WARN ]: Verification canceled [2018-06-25 15:07:25,258 WARN ]: Timeout [2018-06-25 15:07:25,258 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 03:07:25 BoogieIcfgContainer [2018-06-25 15:07:25,258 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 15:07:25,259 INFO ]: Toolchain (without parser) took 65639.25 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 238.4 MB in the beginning and 769.6 MB in the end (delta: -531.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 15:07:25,260 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 15:07:25,260 INFO ]: ChcToBoogie took 101.72 ms. Allocated memory is still 304.1 MB. Free memory was 237.4 MB in the beginning and 234.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:07:25,260 INFO ]: Boogie Preprocessor took 66.75 ms. Allocated memory is still 304.1 MB. Free memory was 234.4 MB in the beginning and 232.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-25 15:07:25,261 INFO ]: RCFGBuilder took 535.84 ms. Allocated memory is still 304.1 MB. Free memory was 232.3 MB in the beginning and 195.1 MB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 3.6 GB. [2018-06-25 15:07:25,261 INFO ]: TraceAbstraction took 64916.77 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 195.1 MB in the beginning and 769.6 MB in the end (delta: -574.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 15:07:25,268 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 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 101.72 ms. Allocated memory is still 304.1 MB. Free memory was 237.4 MB in the beginning and 234.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 66.75 ms. Allocated memory is still 304.1 MB. Free memory was 234.4 MB in the beginning and 232.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 535.84 ms. Allocated memory is still 304.1 MB. Free memory was 232.3 MB in the beginning and 195.1 MB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64916.77 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 195.1 MB in the beginning and 769.6 MB in the end (delta: -574.5 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 XnfDer was eliminating 8 quantified variables from 11 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 64.8s 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, 0.5s 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 34.2s 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_11_e1_3457.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_15-07-25-284.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_11_e1_3457.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_15-07-25-284.csv Completed graceful shutdown