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/MESI_i3_e1_2143.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 08:49:10,912 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 08:49:10,914 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 08:49:10,925 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 08:49:10,925 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 08:49:10,926 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 08:49:10,927 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 08:49:10,931 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 08:49:10,932 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 08:49:10,933 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 08:49:10,935 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 08:49:10,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 08:49:10,936 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 08:49:10,937 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 08:49:10,938 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 08:49:10,938 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 08:49:10,942 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 08:49:10,944 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 08:49:10,954 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 08:49:10,955 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 08:49:10,956 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 08:49:10,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 08:49:10,958 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 08:49:10,958 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 08:49:10,959 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 08:49:10,962 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 08:49:10,962 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 08:49:10,963 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 08:49:10,964 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 08:49:10,968 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 08:49:10,968 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 08:49:10,969 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 08:49:10,969 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 08:49:10,970 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 08:49:10,970 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 08:49:10,970 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 08:49:10,988 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 08:49:10,988 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 08:49:10,988 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 08:49:10,988 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 08:49:10,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 08:49:10,990 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 08:49:10,992 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 08:49:10,993 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 08:49:10,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:49:10,993 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 08:49:10,993 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 08:49:10,993 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 08:49:10,994 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 08:49:10,994 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 08:49:10,994 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 08:49:10,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 08:49:10,994 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 08:49:10,996 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 08:49:10,997 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 08:49:11,040 INFO ]: Repository-Root is: /tmp [2018-06-22 08:49:11,057 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 08:49:11,063 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 08:49:11,065 INFO ]: Initializing SmtParser... [2018-06-22 08:49:11,065 INFO ]: SmtParser initialized [2018-06-22 08:49:11,066 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_2143.smt2 [2018-06-22 08:49:11,067 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 08:49:11,153 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_2143.smt2 unknown [2018-06-22 08:49:11,591 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i3_e1_2143.smt2 [2018-06-22 08:49:11,607 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 08:49:11,613 INFO ]: Walking toolchain with 4 elements. [2018-06-22 08:49:11,613 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 08:49:11,613 INFO ]: Initializing ChcToBoogie... [2018-06-22 08:49:11,613 INFO ]: ChcToBoogie initialized [2018-06-22 08:49:11,626 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:49:11" (1/1) ... [2018-06-22 08:49:11,710 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11 Unit [2018-06-22 08:49:11,710 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 08:49:11,711 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 08:49:11,711 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 08:49:11,711 INFO ]: Boogie Preprocessor initialized [2018-06-22 08:49:11,733 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (1/1) ... [2018-06-22 08:49:11,733 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (1/1) ... [2018-06-22 08:49:11,743 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (1/1) ... [2018-06-22 08:49:11,743 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (1/1) ... [2018-06-22 08:49:11,751 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (1/1) ... [2018-06-22 08:49:11,754 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (1/1) ... [2018-06-22 08:49:11,756 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (1/1) ... [2018-06-22 08:49:11,762 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 08:49:11,763 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 08:49:11,763 INFO ]: Initializing RCFGBuilder... [2018-06-22 08:49:11,763 INFO ]: RCFGBuilder initialized [2018-06-22 08:49:11,764 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 08:49:11,774 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 08:49:11,774 INFO ]: Found specification of procedure gotoProc [2018-06-22 08:49:11,774 INFO ]: Found implementation of procedure gotoProc [2018-06-22 08:49:11,774 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 08:49:11,774 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 08:49:11,774 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:49:12,112 INFO ]: Using library mode [2018-06-22 08:49:12,113 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:49:12 BoogieIcfgContainer [2018-06-22 08:49:12,113 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 08:49:12,115 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 08:49:12,115 INFO ]: Initializing TraceAbstraction... [2018-06-22 08:49:12,118 INFO ]: TraceAbstraction initialized [2018-06-22 08:49:12,118 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:49:11" (1/3) ... [2018-06-22 08:49:12,119 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73203dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:49:12, skipping insertion in model container [2018-06-22 08:49:12,119 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:49:11" (2/3) ... [2018-06-22 08:49:12,119 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73203dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:49:12, skipping insertion in model container [2018-06-22 08:49:12,119 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:49:12" (3/3) ... [2018-06-22 08:49:12,121 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 08:49:12,130 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 08:49:12,138 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 08:49:12,188 INFO ]: Using default assertion order modulation [2018-06-22 08:49:12,189 INFO ]: Interprodecural is true [2018-06-22 08:49:12,189 INFO ]: Hoare is false [2018-06-22 08:49:12,189 INFO ]: Compute interpolants for FPandBP [2018-06-22 08:49:12,189 INFO ]: Backedges is TWOTRACK [2018-06-22 08:49:12,189 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 08:49:12,189 INFO ]: Difference is false [2018-06-22 08:49:12,189 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 08:49:12,189 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 08:49:12,202 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 08:49:12,215 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 08:49:12,215 INFO ]: Found error trace [2018-06-22 08:49:12,217 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:49:12,217 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:49:12,223 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 08:49:12,224 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:49:12,226 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:49:12,272 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:49:12,272 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:49:12,272 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:49:12,387 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:49:12,511 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:49:12,512 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 08:49:12,513 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 08:49:12,514 INFO ]: Interpolant automaton has 3 states [2018-06-22 08:49:12,525 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 08:49:12,525 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:49:12,527 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 08:49:12,619 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:49:12,620 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 08:49:12,622 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 08:49:12,624 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 08:49:12,624 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:49:12,633 INFO ]: With dead ends: 9 [2018-06-22 08:49:12,633 INFO ]: Without dead ends: 9 [2018-06-22 08:49:12,639 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:49:12,656 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 08:49:12,686 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 08:49:12,688 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 08:49:12,688 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 08:49:12,689 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 08:49:12,689 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:49:12,689 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 08:49:12,689 INFO ]: Interpolant automaton has 3 states. [2018-06-22 08:49:12,689 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 08:49:12,690 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 08:49:12,690 INFO ]: Found error trace [2018-06-22 08:49:12,690 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:49:12,690 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:49:12,690 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 08:49:12,690 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:49:12,690 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:49:12,691 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:49:12,691 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:49:12,691 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:49:12,836 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:49:13,203 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:49:13,203 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:49:13,203 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:49:13,210 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:49:13,389 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:49:13,407 INFO ]: Computing forward predicates... [2018-06-22 08:49:14,152 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,162 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:49:14,171 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,213 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:49:14,335 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,339 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:49:14,462 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,478 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,480 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:49:14,500 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:49:14,545 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:49:14,552 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,554 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,556 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,572 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,617 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:14,619 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:49:26,651 WARN ]: Spent 551.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 14 [2018-06-22 08:49:26,655 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:49:26,740 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:49:26,740 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 08:49:26,741 INFO ]: Interpolant automaton has 5 states [2018-06-22 08:49:26,741 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 08:49:26,741 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:49:26,741 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 08:49:26,775 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:49:26,776 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 08:49:26,776 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 08:49:26,776 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 08:49:26,776 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:49:26,776 INFO ]: With dead ends: 10 [2018-06-22 08:49:26,776 INFO ]: Without dead ends: 10 [2018-06-22 08:49:26,777 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:49:26,777 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 08:49:26,778 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 08:49:26,778 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 08:49:26,778 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 08:49:26,778 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 08:49:26,778 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:49:26,778 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 08:49:26,778 INFO ]: Interpolant automaton has 5 states. [2018-06-22 08:49:26,779 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 08:49:26,779 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 08:49:26,779 INFO ]: Found error trace [2018-06-22 08:49:26,779 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:49:26,779 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:49:26,779 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 08:49:26,779 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:49:26,779 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:49:26,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:49:26,780 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:49:26,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:49:26,934 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:49:27,973 WARN ]: Spent 737.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 90 [2018-06-22 08:49:27,990 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:49:27,991 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:49:27,991 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:49:27,997 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 08:49:28,128 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 08:49:28,128 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:49:28,135 INFO ]: Computing forward predicates... [2018-06-22 08:49:28,524 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:49:28,525 WARN ]: expecting exponential blowup for input size 21 [2018-06-22 08:49:49,931 WARN ]: Simplifying disjunction of 933120 conjuctions. This might take some time... Received shutdown request... [2018-06-22 08:50:10,425 INFO ]: Timeout while computing interpolants [2018-06-22 08:50:10,627 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:50:10,627 WARN ]: Verification canceled [2018-06-22 08:50:10,631 WARN ]: Timeout [2018-06-22 08:50:10,632 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:50:10 BoogieIcfgContainer [2018-06-22 08:50:10,632 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 08:50:10,633 INFO ]: Toolchain (without parser) took 59025.69 ms. Allocated memory was 308.8 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 251.2 MB in the beginning and 1.2 GB in the end (delta: -997.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 3.6 GB. [2018-06-22 08:50:10,634 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 08:50:10,634 INFO ]: ChcToBoogie took 97.05 ms. Allocated memory is still 308.8 MB. Free memory was 251.2 MB in the beginning and 248.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:50:10,634 INFO ]: Boogie Preprocessor took 51.66 ms. Allocated memory is still 308.8 MB. Free memory was 248.2 MB in the beginning and 246.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:50:10,634 INFO ]: RCFGBuilder took 349.86 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 219.2 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:50:10,635 INFO ]: TraceAbstraction took 58517.58 ms. Allocated memory was 308.8 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 219.2 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.5 GB. Max. memory is 3.6 GB. [2018-06-22 08:50:10,641 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 97.05 ms. Allocated memory is still 308.8 MB. Free memory was 251.2 MB in the beginning and 248.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 51.66 ms. Allocated memory is still 308.8 MB. Free memory was 248.2 MB in the beginning and 246.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 349.86 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 219.2 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58517.58 ms. Allocated memory was 308.8 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 219.2 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.5 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 933120 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 58.4s 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, 0.8s 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, 13.8s 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_2143.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_08-50-10-653.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_i3_e1_2143.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_08-50-10-653.csv Completed graceful shutdown