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/MESI_i3_e1_447_e7_2194.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:22:15,942 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:22:15,944 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:22:15,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:22:15,960 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:22:15,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:22:15,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:22:15,965 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:22:15,967 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:22:15,969 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:22:15,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:22:15,970 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:22:15,971 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:22:15,972 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:22:15,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:22:15,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:22:15,978 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:22:15,987 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:22:15,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:22:15,990 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:22:15,991 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:22:15,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:22:15,993 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:22:15,993 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:22:15,994 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:22:15,995 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:22:15,995 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:22:15,996 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:22:16,000 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:22:16,000 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:22:16,001 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:22:16,002 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:22:16,002 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:22:16,002 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:22:16,004 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:22:16,004 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:22:16,021 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:22:16,024 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:22:16,024 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:22:16,024 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:22:16,025 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:22:16,026 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:22:16,026 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:22:16,026 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:22:16,026 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:22:16,026 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:22:16,027 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:22:16,027 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:22:16,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:22:16,027 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:22:16,027 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:22:16,028 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:22:16,030 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:22:16,030 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:22:16,031 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:22:16,031 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:22:16,031 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:22:16,032 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:22:16,033 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:22:16,082 INFO ]: Repository-Root is: /tmp [2018-06-25 16:22:16,101 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:22:16,107 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:22:16,109 INFO ]: Initializing SmtParser... [2018-06-25 16:22:16,109 INFO ]: SmtParser initialized [2018-06-25 16:22:16,110 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e7_2194.smt2 [2018-06-25 16:22:16,111 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 16:22:16,203 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e7_2194.smt2 unknown [2018-06-25 16:22:16,639 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_447_e7_2194.smt2 [2018-06-25 16:22:16,649 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:22:16,664 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:22:16,664 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:22:16,665 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:22:16,665 INFO ]: ChcToBoogie initialized [2018-06-25 16:22:16,668 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:22:16" (1/1) ... [2018-06-25 16:22:16,791 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16 Unit [2018-06-25 16:22:16,792 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:22:16,792 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:22:16,792 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:22:16,792 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:22:16,850 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (1/1) ... [2018-06-25 16:22:16,850 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (1/1) ... [2018-06-25 16:22:16,864 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (1/1) ... [2018-06-25 16:22:16,864 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (1/1) ... [2018-06-25 16:22:16,876 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (1/1) ... [2018-06-25 16:22:16,878 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (1/1) ... [2018-06-25 16:22:16,880 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (1/1) ... [2018-06-25 16:22:16,891 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:22:16,892 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:22:16,892 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:22:16,892 INFO ]: RCFGBuilder initialized [2018-06-25 16:22:16,893 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (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 16:22:16,904 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:22:16,904 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:22:16,904 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:22:16,904 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:22:16,904 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:22:16,904 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 16:22:17,298 INFO ]: Using library mode [2018-06-25 16:22:17,298 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:22:17 BoogieIcfgContainer [2018-06-25 16:22:17,298 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:22:17,301 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:22:17,301 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:22:17,304 INFO ]: TraceAbstraction initialized [2018-06-25 16:22:17,304 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:22:16" (1/3) ... [2018-06-25 16:22:17,305 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b35977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:22:17, skipping insertion in model container [2018-06-25 16:22:17,306 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:22:16" (2/3) ... [2018-06-25 16:22:17,306 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b35977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:22:17, skipping insertion in model container [2018-06-25 16:22:17,306 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:22:17" (3/3) ... [2018-06-25 16:22:17,308 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:22:17,319 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:22:17,330 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:22:17,374 INFO ]: Using default assertion order modulation [2018-06-25 16:22:17,374 INFO ]: Interprodecural is true [2018-06-25 16:22:17,374 INFO ]: Hoare is false [2018-06-25 16:22:17,374 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:22:17,374 INFO ]: Backedges is TWOTRACK [2018-06-25 16:22:17,374 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:22:17,374 INFO ]: Difference is false [2018-06-25 16:22:17,375 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:22:17,375 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:22:17,389 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:22:17,406 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:22:17,406 INFO ]: Found error trace [2018-06-25 16:22:17,410 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:22:17,410 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:22:17,416 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:22:17,419 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:22:17,419 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:22:17,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:22:17,460 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:22:17,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:22:17,577 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:22:17,757 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:22:17,758 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:22:17,758 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:22:17,760 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:22:17,774 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:22:17,774 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:22:17,776 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:22:17,861 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:22:17,861 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:22:17,862 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:22:17,863 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:22:17,864 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:22:17,874 INFO ]: With dead ends: 9 [2018-06-25 16:22:17,874 INFO ]: Without dead ends: 9 [2018-06-25 16:22:17,876 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 16:22:17,894 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:22:17,921 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:22:17,924 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:22:17,925 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:22:17,926 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:22:17,926 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:22:17,926 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:22:17,926 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:22:17,926 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:22:17,927 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:22:17,927 INFO ]: Found error trace [2018-06-25 16:22:17,927 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:22:17,927 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:22:17,927 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:22:17,927 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:22:17,927 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:22:17,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:22:17,928 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:22:17,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:22:18,043 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:22:18,248 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:22:18,248 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:22:18,248 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 16:22:18,255 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:22:18,452 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:22:18,462 INFO ]: Computing forward predicates... [2018-06-25 16:22:19,149 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,162 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:22:19,172 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,221 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:22:19,306 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,311 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:22:19,392 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,420 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,423 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:22:19,438 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:22:19,485 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:22:19,491 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,492 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,494 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,508 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,553 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:19,554 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:22:30,116 WARN ]: Spent 445.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 14 [2018-06-25 16:22:30,120 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:22:30,142 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:22:30,143 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 16:22:30,143 INFO ]: Interpolant automaton has 5 states [2018-06-25 16:22:30,143 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 16:22:30,143 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:22:30,143 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 16:22:30,172 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:22:30,172 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:22:30,173 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:22:30,173 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 16:22:30,173 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:22:30,173 INFO ]: With dead ends: 10 [2018-06-25 16:22:30,173 INFO ]: Without dead ends: 10 [2018-06-25 16:22:30,174 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:22:30,174 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:22:30,175 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:22:30,175 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:22:30,175 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:22:30,175 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:22:30,175 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:22:30,175 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:22:30,175 INFO ]: Interpolant automaton has 5 states. [2018-06-25 16:22:30,175 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:22:30,176 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:22:30,176 INFO ]: Found error trace [2018-06-25 16:22:30,176 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:22:30,176 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:22:30,176 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-25 16:22:30,176 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:22:30,176 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:22:30,177 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:22:30,177 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:22:30,177 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:22:30,295 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:22:30,950 WARN ]: Spent 362.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-06-25 16:22:30,967 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:22:30,967 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:22:30,967 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 16:22:30,973 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:22:31,108 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:22:31,108 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:22:31,115 INFO ]: Computing forward predicates... [2018-06-25 16:22:31,539 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:22:31,615 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:22:31,617 WARN ]: expecting exponential blowup for input size 14 [2018-06-25 16:22:31,691 WARN ]: Simplifying disjunction of 5832 conjuctions. This might take some time... [2018-06-25 16:22:34,764 INFO ]: Simplified to disjunction of 3888 conjuctions. [2018-06-25 16:22:34,782 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:34,785 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:22:34,803 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:34,807 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:22:34,824 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:22:34,839 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:34,839 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:34,840 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:22:34,841 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:22:34,855 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:22:34,868 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:22:34,879 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:22:34,902 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:22:34,962 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:34,964 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:22:34,981 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:34,986 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:22:34,991 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:22:35,004 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 16:22:36,886 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:22:36,887 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:36,890 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:22:37,329 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:22:37,342 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:37,343 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:37,345 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:22:37,346 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:22:37,352 WARN ]: expecting exponential blowup for input size 15 [2018-06-25 16:22:37,517 WARN ]: Simplifying disjunction of 11664 conjuctions. This might take some time... [2018-06-25 16:22:50,416 INFO ]: Simplified to disjunction of 7776 conjuctions. [2018-06-25 16:22:50,906 WARN ]: Simplifying disjunction of 177480 conjuctions. This might take some time... Received shutdown request... [2018-06-25 16:23:29,528 INFO ]: Timeout while computing interpolants [2018-06-25 16:23:29,751 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:23:29,752 WARN ]: Verification canceled [2018-06-25 16:23:29,756 WARN ]: Timeout [2018-06-25 16:23:29,756 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:23:29 BoogieIcfgContainer [2018-06-25 16:23:29,756 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:23:29,757 INFO ]: Toolchain (without parser) took 73107.97 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 866.1 MB). Free memory was 249.2 MB in the beginning and 914.8 MB in the end (delta: -665.7 MB). Peak memory consumption was 896.2 MB. Max. memory is 3.6 GB. [2018-06-25 16:23:29,758 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:23:29,758 INFO ]: ChcToBoogie took 127.46 ms. Allocated memory is still 306.7 MB. Free memory was 249.2 MB in the beginning and 246.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:23:29,759 INFO ]: Boogie Preprocessor took 98.97 ms. Allocated memory is still 306.7 MB. Free memory was 246.2 MB in the beginning and 244.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:23:29,761 INFO ]: RCFGBuilder took 406.62 ms. Allocated memory is still 306.7 MB. Free memory was 244.2 MB in the beginning and 217.1 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:23:29,761 INFO ]: TraceAbstraction took 72455.30 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 866.1 MB). Free memory was 216.1 MB in the beginning and 914.8 MB in the end (delta: -698.7 MB). Peak memory consumption was 863.2 MB. Max. memory is 3.6 GB. [2018-06-25 16:23:29,764 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 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 127.46 ms. Allocated memory is still 306.7 MB. Free memory was 249.2 MB in the beginning and 246.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 98.97 ms. Allocated memory is still 306.7 MB. Free memory was 246.2 MB in the beginning and 244.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 406.62 ms. Allocated memory is still 306.7 MB. Free memory was 244.2 MB in the beginning and 217.1 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 72455.30 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 866.1 MB). Free memory was 216.1 MB in the beginning and 914.8 MB in the end (delta: -698.7 MB). Peak memory consumption was 863.2 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 177480 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 72.3s 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, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 413 SizeOfPredicates, 4 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_i3_e1_447_e7_2194.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-23-29-783.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_i3_e1_447_e7_2194.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-23-29-783.csv Completed graceful shutdown