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/car_all_e8_856_e7_578.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 06:25:28,962 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 06:25:28,964 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 06:25:28,975 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 06:25:28,976 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 06:25:28,977 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 06:25:28,978 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 06:25:28,980 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 06:25:28,982 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 06:25:28,982 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 06:25:28,983 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 06:25:28,984 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 06:25:28,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 06:25:28,986 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 06:25:28,986 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 06:25:28,987 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 06:25:28,989 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 06:25:28,992 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 06:25:28,994 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 06:25:28,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 06:25:28,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 06:25:28,999 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 06:25:28,999 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 06:25:28,999 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 06:25:29,000 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 06:25:29,001 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 06:25:29,002 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 06:25:29,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 06:25:29,004 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 06:25:29,004 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 06:25:29,005 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 06:25:29,005 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 06:25:29,006 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 06:25:29,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 06:25:29,007 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 06:25:29,008 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 06:25:29,021 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 06:25:29,022 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 06:25:29,022 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 06:25:29,022 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 06:25:29,023 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 06:25:29,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 06:25:29,024 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 06:25:29,024 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 06:25:29,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 06:25:29,025 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 06:25:29,025 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 06:25:29,025 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 06:25:29,026 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 06:25:29,026 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 06:25:29,026 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 06:25:29,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 06:25:29,027 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 06:25:29,028 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 06:25:29,028 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 06:25:29,069 INFO ]: Repository-Root is: /tmp [2018-06-22 06:25:29,086 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 06:25:29,092 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 06:25:29,093 INFO ]: Initializing SmtParser... [2018-06-22 06:25:29,094 INFO ]: SmtParser initialized [2018-06-22 06:25:29,094 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856_e7_578.smt2 [2018-06-22 06:25:29,096 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 06:25:29,185 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856_e7_578.smt2 unknown [2018-06-22 06:25:29,704 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856_e7_578.smt2 [2018-06-22 06:25:29,711 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 06:25:29,717 INFO ]: Walking toolchain with 4 elements. [2018-06-22 06:25:29,717 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 06:25:29,717 INFO ]: Initializing ChcToBoogie... [2018-06-22 06:25:29,717 INFO ]: ChcToBoogie initialized [2018-06-22 06:25:29,721 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:25:29" (1/1) ... [2018-06-22 06:25:29,781 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29 Unit [2018-06-22 06:25:29,781 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 06:25:29,781 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 06:25:29,781 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 06:25:29,781 INFO ]: Boogie Preprocessor initialized [2018-06-22 06:25:29,796 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (1/1) ... [2018-06-22 06:25:29,796 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (1/1) ... [2018-06-22 06:25:29,804 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (1/1) ... [2018-06-22 06:25:29,804 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (1/1) ... [2018-06-22 06:25:29,808 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (1/1) ... [2018-06-22 06:25:29,810 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (1/1) ... [2018-06-22 06:25:29,811 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (1/1) ... [2018-06-22 06:25:29,814 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 06:25:29,814 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 06:25:29,814 INFO ]: Initializing RCFGBuilder... [2018-06-22 06:25:29,814 INFO ]: RCFGBuilder initialized [2018-06-22 06:25:29,815 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 06:25:29,840 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 06:25:29,840 INFO ]: Found specification of procedure gotoProc [2018-06-22 06:25:29,840 INFO ]: Found implementation of procedure gotoProc [2018-06-22 06:25:29,840 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 06:25:29,840 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 06:25:29,840 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 06:25:30,249 INFO ]: Using library mode [2018-06-22 06:25:30,252 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:25:30 BoogieIcfgContainer [2018-06-22 06:25:30,252 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 06:25:30,254 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 06:25:30,254 INFO ]: Initializing TraceAbstraction... [2018-06-22 06:25:30,260 INFO ]: TraceAbstraction initialized [2018-06-22 06:25:30,260 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:25:29" (1/3) ... [2018-06-22 06:25:30,261 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192db3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:25:30, skipping insertion in model container [2018-06-22 06:25:30,261 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:25:29" (2/3) ... [2018-06-22 06:25:30,261 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192db3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:25:30, skipping insertion in model container [2018-06-22 06:25:30,261 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:25:30" (3/3) ... [2018-06-22 06:25:30,263 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 06:25:30,272 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 06:25:30,280 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 06:25:30,332 INFO ]: Using default assertion order modulation [2018-06-22 06:25:30,333 INFO ]: Interprodecural is true [2018-06-22 06:25:30,333 INFO ]: Hoare is false [2018-06-22 06:25:30,333 INFO ]: Compute interpolants for FPandBP [2018-06-22 06:25:30,333 INFO ]: Backedges is TWOTRACK [2018-06-22 06:25:30,333 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 06:25:30,333 INFO ]: Difference is false [2018-06-22 06:25:30,333 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 06:25:30,333 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 06:25:30,346 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 06:25:30,358 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 06:25:30,359 INFO ]: Found error trace [2018-06-22 06:25:30,359 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:25:30,359 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:25:30,365 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 06:25:30,367 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:25:30,367 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:25:30,400 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:25:30,400 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:25:30,400 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:25:30,487 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:25:30,654 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:25:30,655 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 06:25:30,655 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 06:25:30,657 INFO ]: Interpolant automaton has 3 states [2018-06-22 06:25:30,673 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 06:25:30,673 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 06:25:30,675 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 06:25:30,721 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:25:30,721 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 06:25:30,721 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 06:25:30,722 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 06:25:30,723 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:25:30,731 INFO ]: With dead ends: 9 [2018-06-22 06:25:30,731 INFO ]: Without dead ends: 9 [2018-06-22 06:25:30,732 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 06:25:30,748 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 06:25:30,776 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 06:25:30,777 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 06:25:30,778 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 06:25:30,779 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 06:25:30,779 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:25:30,779 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 06:25:30,779 INFO ]: Interpolant automaton has 3 states. [2018-06-22 06:25:30,779 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 06:25:30,779 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 06:25:30,779 INFO ]: Found error trace [2018-06-22 06:25:30,779 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:25:30,779 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:25:30,780 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 06:25:30,780 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:25:30,783 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:25:30,784 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:25:30,784 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:25:30,784 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:25:30,887 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:25:31,664 WARN ]: Spent 557.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2018-06-22 06:25:31,667 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:25:31,667 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:25:31,667 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 06:25:31,676 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:25:31,792 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:25:31,803 INFO ]: Computing forward predicates... [2018-06-22 06:25:32,377 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:33,115 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:33,600 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:33,990 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:34,436 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:34,791 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:35,209 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:35,693 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:36,057 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:36,451 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:36,778 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:37,102 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:37,554 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:37,934 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 06:25:38,133 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:38,689 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 06:25:38,909 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:39,363 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:39,768 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:40,045 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 06:25:40,196 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:40,499 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:40,836 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 06:25:40,985 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:46,309 WARN ]: Spent 464.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 28 [2018-06-22 06:25:46,316 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:25:46,338 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:25:46,338 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 06:25:46,338 INFO ]: Interpolant automaton has 6 states [2018-06-22 06:25:46,339 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 06:25:46,339 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-22 06:25:46,339 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 06:25:46,470 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2018-06-22 06:25:46,486 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:25:46,486 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 06:25:46,486 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 06:25:46,486 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 06:25:46,487 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:25:46,487 INFO ]: With dead ends: 11 [2018-06-22 06:25:46,487 INFO ]: Without dead ends: 11 [2018-06-22 06:25:46,488 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-22 06:25:46,488 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 06:25:46,489 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 06:25:46,489 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 06:25:46,489 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 06:25:46,489 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 06:25:46,489 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:25:46,489 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 06:25:46,489 INFO ]: Interpolant automaton has 6 states. [2018-06-22 06:25:46,489 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 06:25:46,490 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 06:25:46,490 INFO ]: Found error trace [2018-06-22 06:25:46,490 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:25:46,490 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:25:46,490 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 06:25:46,490 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:25:46,490 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:25:46,491 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:25:46,491 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:25:46,491 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:25:46,671 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:25:47,168 WARN ]: Spent 212.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 2 [2018-06-22 06:25:48,049 WARN ]: Spent 825.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2018-06-22 06:25:48,590 WARN ]: Spent 474.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2018-06-22 06:25:48,609 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:25:48,610 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:25:48,610 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 06:25:48,615 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 06:25:48,706 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 06:25:48,706 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:25:48,714 INFO ]: Computing forward predicates... [2018-06-22 06:25:49,058 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:25:49,531 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 06:25:49,559 WARN ]: Simplifying disjunction of 8640 conjuctions. This might take some time... [2018-06-22 06:25:53,656 INFO ]: Simplified to disjunction of 5760 conjuctions. [2018-06-22 06:25:53,673 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 06:25:53,715 WARN ]: Simplifying disjunction of 8640 conjuctions. This might take some time... [2018-06-22 06:25:58,941 INFO ]: Simplified to disjunction of 5760 conjuctions. [2018-06-22 06:25:58,958 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:25:59,017 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 06:25:59,056 WARN ]: Simplifying disjunction of 8640 conjuctions. This might take some time... [2018-06-22 06:26:05,600 INFO ]: Simplified to disjunction of 5760 conjuctions. [2018-06-22 06:26:05,622 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:26:05,980 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:26:06,465 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:26:06,568 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 06:26:06,619 WARN ]: Simplifying disjunction of 17280 conjuctions. This might take some time... [2018-06-22 06:26:30,457 INFO ]: Simplified to disjunction of 11520 conjuctions. [2018-06-22 06:26:30,495 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:26:30,520 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 06:26:30,570 WARN ]: Simplifying disjunction of 17280 conjuctions. This might take some time... Received shutdown request... [2018-06-22 06:26:45,915 INFO ]: Timeout while computing interpolants [2018-06-22 06:26:46,116 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 06:26:46,116 WARN ]: Verification canceled [2018-06-22 06:26:46,122 WARN ]: Timeout [2018-06-22 06:26:46,122 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:26:46 BoogieIcfgContainer [2018-06-22 06:26:46,122 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 06:26:46,124 INFO ]: Toolchain (without parser) took 76411.39 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 257.7 MB in the beginning and 812.2 MB in the end (delta: -554.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 06:26:46,130 INFO ]: SmtParser took 0.08 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. [2018-06-22 06:26:46,131 INFO ]: ChcToBoogie took 63.86 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 254.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:26:46,131 INFO ]: Boogie Preprocessor took 32.24 ms. Allocated memory is still 309.3 MB. Free memory was 254.7 MB in the beginning and 253.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:26:46,131 INFO ]: RCFGBuilder took 438.31 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 233.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:26:46,132 INFO ]: TraceAbstraction took 75868.20 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 233.7 MB in the beginning and 812.2 MB in the end (delta: -578.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 06:26:46,137 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 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 63.86 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 254.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.24 ms. Allocated memory is still 309.3 MB. Free memory was 254.7 MB in the beginning and 253.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 438.31 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 233.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 75868.20 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 233.7 MB in the beginning and 812.2 MB in the end (delta: -578.5 MB). Peak memory consumption was 1.2 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 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 17280 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 75.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 985 SizeOfPredicates, 11 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 53 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/car_all_e8_856_e7_578.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_06-26-46-148.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_all_e8_856_e7_578.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_06-26-46-148.csv Completed graceful shutdown