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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:46:32,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:46:32,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:46:32,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:46:32,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:46:32,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:46:32,122 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:46:32,126 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:46:32,129 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:46:32,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:46:32,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:46:32,131 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:46:32,132 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:46:32,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:46:32,134 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:46:32,134 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:46:32,136 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:46:32,150 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:46:32,152 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:46:32,153 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:46:32,154 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:46:32,156 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:46:32,157 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:46:32,157 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:46:32,162 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:46:32,163 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:46:32,164 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:46:32,165 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:46:32,172 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:46:32,172 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:46:32,172 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:46:32,173 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:46:32,173 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:46:32,174 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:46:32,175 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:46:32,175 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 18:46:32,200 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:46:32,200 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:46:32,201 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:46:32,201 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:46:32,202 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:46:32,202 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:46:32,202 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:46:32,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:46:32,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:46:32,203 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:46:32,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:46:32,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:46:32,204 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:46:32,204 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:46:32,204 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:46:32,205 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:46:32,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:46:32,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:46:32,205 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:46:32,206 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:46:32,208 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:46:32,262 INFO ]: Repository-Root is: /tmp [2018-06-22 18:46:32,278 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:46:32,284 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:46:32,286 INFO ]: Initializing SmtParser... [2018-06-22 18:46:32,286 INFO ]: SmtParser initialized [2018-06-22 18:46:32,287 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_2.smt2 [2018-06-22 18:46:32,289 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 18:46:32,378 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_2.smt2 unknown [2018-06-22 18:46:32,821 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_2.smt2 [2018-06-22 18:46:32,831 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:46:32,842 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:46:32,843 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:46:32,843 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:46:32,843 INFO ]: ChcToBoogie initialized [2018-06-22 18:46:32,855 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:46:32" (1/1) ... [2018-06-22 18:46:32,952 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32 Unit [2018-06-22 18:46:32,952 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:46:32,953 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:46:32,953 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:46:32,953 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:46:32,978 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (1/1) ... [2018-06-22 18:46:32,978 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (1/1) ... [2018-06-22 18:46:32,990 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (1/1) ... [2018-06-22 18:46:32,990 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (1/1) ... [2018-06-22 18:46:33,008 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (1/1) ... [2018-06-22 18:46:33,009 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (1/1) ... [2018-06-22 18:46:33,011 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (1/1) ... [2018-06-22 18:46:33,014 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:46:33,014 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:46:33,015 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:46:33,015 INFO ]: RCFGBuilder initialized [2018-06-22 18:46:33,015 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (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 18:46:33,045 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:46:33,045 INFO ]: Found specification of procedure False [2018-06-22 18:46:33,045 INFO ]: Found implementation of procedure False [2018-06-22 18:46:33,045 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:46:33,045 INFO ]: Found specification of procedure state [2018-06-22 18:46:33,045 INFO ]: Found implementation of procedure state [2018-06-22 18:46:33,045 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:46:33,045 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:46:33,045 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 18:46:33,340 INFO ]: Using library mode [2018-06-22 18:46:33,340 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:46:33 BoogieIcfgContainer [2018-06-22 18:46:33,340 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:46:33,341 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:46:33,341 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:46:33,344 INFO ]: TraceAbstraction initialized [2018-06-22 18:46:33,345 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:46:32" (1/3) ... [2018-06-22 18:46:33,345 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc28dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:46:33, skipping insertion in model container [2018-06-22 18:46:33,346 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:46:32" (2/3) ... [2018-06-22 18:46:33,346 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc28dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:46:33, skipping insertion in model container [2018-06-22 18:46:33,346 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:46:33" (3/3) ... [2018-06-22 18:46:33,348 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:46:33,357 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:46:33,368 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:46:33,417 INFO ]: Using default assertion order modulation [2018-06-22 18:46:33,417 INFO ]: Interprodecural is true [2018-06-22 18:46:33,417 INFO ]: Hoare is false [2018-06-22 18:46:33,417 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:46:33,417 INFO ]: Backedges is TWOTRACK [2018-06-22 18:46:33,417 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:46:33,417 INFO ]: Difference is false [2018-06-22 18:46:33,418 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:46:33,418 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:46:33,432 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:46:33,448 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:46:33,448 INFO ]: Found error trace [2018-06-22 18:46:33,449 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:46:33,449 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:46:33,453 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 18:46:33,454 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:46:33,454 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:46:33,492 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:46:33,492 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:46:33,492 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:46:33,573 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:46:33,800 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:46:33,803 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:46:33,803 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:46:33,805 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:46:33,820 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:46:33,821 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:46:33,824 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:46:33,952 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:46:33,952 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:46:33,952 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:46:33,954 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:46:33,954 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:46:33,974 INFO ]: With dead ends: 13 [2018-06-22 18:46:33,974 INFO ]: Without dead ends: 13 [2018-06-22 18:46:33,976 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:46:33,994 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:46:34,016 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:46:34,017 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:46:34,018 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:46:34,019 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:46:34,019 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:46:34,019 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:46:34,019 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:46:34,019 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:46:34,020 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:46:34,021 INFO ]: Found error trace [2018-06-22 18:46:34,021 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:46:34,021 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:46:34,021 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 18:46:34,021 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:46:34,021 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:46:34,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:46:34,022 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:46:34,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:46:34,135 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:46:35,026 WARN ]: Spent 689.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2018-06-22 18:46:35,157 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-06-22 18:46:35,174 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:46:35,174 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:46:35,174 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 18:46:35,181 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:46:35,291 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:46:35,304 INFO ]: Computing forward predicates... [2018-06-22 18:46:36,653 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,662 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,671 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,682 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,698 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,705 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,924 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,934 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,954 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,956 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,965 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,971 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:36,986 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:46:36,998 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,020 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,022 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,031 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,034 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,048 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,061 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,195 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,200 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,239 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,240 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,246 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,255 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,257 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,259 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:37,260 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:49,788 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 12 [2018-06-22 18:46:49,831 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:46:49,869 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:46:49,869 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 18:46:49,870 INFO ]: Interpolant automaton has 8 states [2018-06-22 18:46:49,870 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 18:46:49,870 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 18:46:49,870 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 18:46:50,227 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:46:50,228 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:46:50,228 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:46:50,228 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 18:46:50,228 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:46:50,229 INFO ]: With dead ends: 15 [2018-06-22 18:46:50,229 INFO ]: Without dead ends: 15 [2018-06-22 18:46:50,230 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 18:46:50,230 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:46:50,232 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:46:50,233 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:46:50,233 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:46:50,233 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:46:50,233 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:46:50,233 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:46:50,233 INFO ]: Interpolant automaton has 8 states. [2018-06-22 18:46:50,233 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:46:50,234 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:46:50,234 INFO ]: Found error trace [2018-06-22 18:46:50,234 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:46:50,234 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:46:50,234 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 18:46:50,234 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:46:50,234 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:46:50,235 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:46:50,235 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:46:50,235 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:46:50,329 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:46:50,624 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 25 [2018-06-22 18:46:50,783 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2018-06-22 18:46:50,841 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:46:50,842 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:46:50,842 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 18:46:50,850 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 18:46:50,967 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:46:50,967 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:46:50,975 INFO ]: Computing forward predicates... [2018-06-22 18:46:51,656 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:46:51,670 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:46:51,673 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:46:51,690 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 18:46:51,727 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:51,736 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:46:51,742 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:46:51,744 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 18:46:51,795 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:46:51,795 WARN ]: expecting exponential blowup for input size 20 [2018-06-22 18:47:16,170 WARN ]: Simplifying disjunction of 1049760 conjuctions. This might take some time... Received shutdown request... [2018-06-22 18:47:29,913 INFO ]: Timeout while computing interpolants [2018-06-22 18:47:30,114 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:47:30,114 WARN ]: Verification canceled [2018-06-22 18:47:30,118 WARN ]: Timeout [2018-06-22 18:47:30,118 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:47:30 BoogieIcfgContainer [2018-06-22 18:47:30,118 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:47:30,119 INFO ]: Toolchain (without parser) took 57287.45 ms. Allocated memory was 303.0 MB in the beginning and 2.4 GB in the end (delta: 2.1 GB). Free memory was 245.5 MB in the beginning and 948.2 MB in the end (delta: -702.7 MB). Peak memory consumption was 2.9 GB. Max. memory is 3.6 GB. [2018-06-22 18:47:30,120 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:47:30,120 INFO ]: ChcToBoogie took 109.65 ms. Allocated memory is still 303.0 MB. Free memory was 245.5 MB in the beginning and 241.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:47:30,121 INFO ]: Boogie Preprocessor took 61.56 ms. Allocated memory is still 303.0 MB. Free memory is still 241.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:47:30,121 INFO ]: RCFGBuilder took 325.74 ms. Allocated memory is still 303.0 MB. Free memory was 239.5 MB in the beginning and 219.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:47:30,121 INFO ]: TraceAbstraction took 56776.67 ms. Allocated memory was 303.0 MB in the beginning and 2.4 GB in the end (delta: 2.1 GB). Free memory was 219.5 MB in the beginning and 948.2 MB in the end (delta: -728.6 MB). Peak memory consumption was 2.9 GB. Max. memory is 3.6 GB. [2018-06-22 18:47:30,124 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 109.65 ms. Allocated memory is still 303.0 MB. Free memory was 245.5 MB in the beginning and 241.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 61.56 ms. Allocated memory is still 303.0 MB. Free memory is still 241.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 325.74 ms. Allocated memory is still 303.0 MB. Free memory was 239.5 MB in the beginning and 219.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 56776.67 ms. Allocated memory was 303.0 MB in the beginning and 2.4 GB in the end (delta: 2.1 GB). Free memory was 219.5 MB in the beginning and 948.2 MB in the end (delta: -728.6 MB). Peak memory consumption was 2.9 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 18 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 1049760 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 56.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 45 SDs, 0 SdLazy, 28 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 15.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1680 SizeOfPredicates, 28 NumberOfNonLiveVariables, 425 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-47-30-135.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-47-30-135.csv Completed graceful shutdown