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_i4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 08:55:13,129 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 08:55:13,131 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 08:55:13,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 08:55:13,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 08:55:13,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 08:55:13,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 08:55:13,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 08:55:13,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 08:55:13,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 08:55:13,151 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 08:55:13,151 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 08:55:13,152 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 08:55:13,153 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 08:55:13,154 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 08:55:13,154 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 08:55:13,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 08:55:13,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 08:55:13,160 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 08:55:13,161 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 08:55:13,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 08:55:13,165 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 08:55:13,165 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 08:55:13,165 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 08:55:13,166 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 08:55:13,167 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 08:55:13,168 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 08:55:13,169 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 08:55:13,170 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 08:55:13,170 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 08:55:13,171 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 08:55:13,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 08:55:13,172 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 08:55:13,173 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 08:55:13,174 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 08:55:13,174 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 08:55:13,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 08:55:13,188 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 08:55:13,188 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 08:55:13,189 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 08:55:13,190 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 08:55:13,190 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 08:55:13,191 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 08:55:13,191 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 08:55:13,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:55:13,191 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 08:55:13,192 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 08:55:13,192 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 08:55:13,192 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 08:55:13,192 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 08:55:13,193 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 08:55:13,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 08:55:13,193 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 08:55:13,195 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 08:55:13,195 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 08:55:13,229 INFO ]: Repository-Root is: /tmp [2018-06-22 08:55:13,247 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 08:55:13,255 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 08:55:13,256 INFO ]: Initializing SmtParser... [2018-06-22 08:55:13,257 INFO ]: SmtParser initialized [2018-06-22 08:55:13,257 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i4.smt2 [2018-06-22 08:55:13,259 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 08:55:13,359 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i4.smt2 unknown [2018-06-22 08:55:13,777 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MESI_i4.smt2 [2018-06-22 08:55:13,782 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 08:55:13,788 INFO ]: Walking toolchain with 4 elements. [2018-06-22 08:55:13,789 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 08:55:13,789 INFO ]: Initializing ChcToBoogie... [2018-06-22 08:55:13,789 INFO ]: ChcToBoogie initialized [2018-06-22 08:55:13,792 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:55:13" (1/1) ... [2018-06-22 08:55:13,876 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13 Unit [2018-06-22 08:55:13,876 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 08:55:13,877 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 08:55:13,877 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 08:55:13,877 INFO ]: Boogie Preprocessor initialized [2018-06-22 08:55:13,897 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (1/1) ... [2018-06-22 08:55:13,897 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (1/1) ... [2018-06-22 08:55:13,917 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (1/1) ... [2018-06-22 08:55:13,917 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (1/1) ... [2018-06-22 08:55:13,923 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (1/1) ... [2018-06-22 08:55:13,934 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (1/1) ... [2018-06-22 08:55:13,936 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (1/1) ... [2018-06-22 08:55:13,940 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 08:55:13,941 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 08:55:13,941 INFO ]: Initializing RCFGBuilder... [2018-06-22 08:55:13,941 INFO ]: RCFGBuilder initialized [2018-06-22 08:55:13,941 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (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 08:55:13,961 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 08:55:13,961 INFO ]: Found specification of procedure gotoProc [2018-06-22 08:55:13,961 INFO ]: Found implementation of procedure gotoProc [2018-06-22 08:55:13,961 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 08:55:13,961 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 08:55:13,961 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 08:55:14,364 INFO ]: Using library mode [2018-06-22 08:55:14,364 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:55:14 BoogieIcfgContainer [2018-06-22 08:55:14,364 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 08:55:14,366 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 08:55:14,366 INFO ]: Initializing TraceAbstraction... [2018-06-22 08:55:14,370 INFO ]: TraceAbstraction initialized [2018-06-22 08:55:14,370 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:55:13" (1/3) ... [2018-06-22 08:55:14,371 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59036568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:55:14, skipping insertion in model container [2018-06-22 08:55:14,371 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:55:13" (2/3) ... [2018-06-22 08:55:14,371 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59036568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:55:14, skipping insertion in model container [2018-06-22 08:55:14,371 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:55:14" (3/3) ... [2018-06-22 08:55:14,373 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 08:55:14,383 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 08:55:14,395 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 08:55:14,448 INFO ]: Using default assertion order modulation [2018-06-22 08:55:14,449 INFO ]: Interprodecural is true [2018-06-22 08:55:14,449 INFO ]: Hoare is false [2018-06-22 08:55:14,449 INFO ]: Compute interpolants for FPandBP [2018-06-22 08:55:14,449 INFO ]: Backedges is TWOTRACK [2018-06-22 08:55:14,449 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 08:55:14,449 INFO ]: Difference is false [2018-06-22 08:55:14,449 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 08:55:14,449 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 08:55:14,466 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 08:55:14,478 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 08:55:14,478 INFO ]: Found error trace [2018-06-22 08:55:14,479 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:55:14,479 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:55:14,484 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 08:55:14,486 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:55:14,486 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:55:14,528 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:55:14,528 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:55:14,528 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:55:14,648 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:55:14,774 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:55:14,777 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 08:55:14,777 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 08:55:14,778 INFO ]: Interpolant automaton has 3 states [2018-06-22 08:55:14,789 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 08:55:14,789 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:55:14,791 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 08:55:14,859 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:55:14,860 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 08:55:14,861 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 08:55:14,863 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 08:55:14,863 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:55:14,874 INFO ]: With dead ends: 9 [2018-06-22 08:55:14,874 INFO ]: Without dead ends: 9 [2018-06-22 08:55:14,876 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 [2018-06-22 08:55:14,893 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 08:55:14,920 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 08:55:14,922 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 08:55:14,922 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 08:55:14,924 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 08:55:14,924 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:55:14,924 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 08:55:14,924 INFO ]: Interpolant automaton has 3 states. [2018-06-22 08:55:14,924 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 08:55:14,924 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 08:55:14,924 INFO ]: Found error trace [2018-06-22 08:55:14,924 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:55:14,925 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:55:14,925 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 08:55:14,925 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:55:14,925 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:55:14,926 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:55:14,926 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:55:14,926 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:55:15,039 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:55:15,294 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 2 [2018-06-22 08:55:15,468 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 08:55:15,469 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:55:15,469 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:55:15,469 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) [2018-06-22 08:55:15,487 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:55:15,625 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:55:15,637 INFO ]: Computing forward predicates... [2018-06-22 08:55:16,624 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:16,641 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:55:16,669 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:55:16,678 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:16,683 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:16,693 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:16,708 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:55:16,713 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:55:16,724 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:16,731 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:16,740 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:16,744 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:16,753 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:16,760 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:55:16,765 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:55:16,806 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:16,818 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:55:16,827 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:55:16,831 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:16,834 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:16,859 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:16,910 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:55:16,923 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:16,928 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:55:16,956 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:55:16,978 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:55:17,022 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:17,025 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:55:17,039 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:17,066 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:17,072 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:55:17,077 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:55:17,090 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:17,100 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:17,158 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:55:17,176 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:17,183 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:17,261 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:17,397 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:17,418 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 08:55:17,422 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:17,427 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:17,508 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:55:17,512 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:17,772 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:17,774 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:55:17,790 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:55:17,796 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:55:17,822 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:17,827 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:17,893 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 08:55:18,131 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:18,144 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:55:18,168 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:55:18,197 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 08:55:18,206 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:18,217 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:55:18,235 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 08:55:18,251 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:18,255 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:18,263 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:18,267 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:18,269 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:18,270 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 08:55:34,068 WARN ]: Spent 647.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 12 [2018-06-22 08:55:34,071 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:55:34,099 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:55:34,100 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 08:55:34,100 INFO ]: Interpolant automaton has 5 states [2018-06-22 08:55:34,101 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 08:55:34,101 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:55:34,101 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 08:55:34,150 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:55:34,150 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 08:55:34,419 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 08:55:34,420 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 08:55:34,420 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:55:34,420 INFO ]: With dead ends: 10 [2018-06-22 08:55:34,420 INFO ]: Without dead ends: 10 [2018-06-22 08:55:34,421 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:55:34,421 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 08:55:34,422 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 08:55:34,422 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 08:55:34,422 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 08:55:34,422 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 08:55:34,423 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:55:34,423 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 08:55:34,423 INFO ]: Interpolant automaton has 5 states. [2018-06-22 08:55:34,423 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 08:55:34,423 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 08:55:34,423 INFO ]: Found error trace [2018-06-22 08:55:34,423 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:55:34,423 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:55:34,423 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 08:55:34,423 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:55:34,423 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:55:34,424 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:55:34,424 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:55:34,424 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:55:34,556 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:55:35,076 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 2 [2018-06-22 08:55:36,226 WARN ]: Spent 1.08 s on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2018-06-22 08:55:36,244 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:55:36,244 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:55:36,244 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 08:55:36,251 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 08:55:36,379 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 08:55:36,379 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:55:36,386 INFO ]: Computing forward predicates... [2018-06-22 08:55:36,641 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 08:55:36,641 WARN ]: expecting exponential blowup for input size 22 Received shutdown request... [2018-06-22 08:56:11,789 INFO ]: Timeout while computing interpolants [2018-06-22 08:56:11,990 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:56:11,990 WARN ]: Verification canceled [2018-06-22 08:56:11,993 WARN ]: Timeout [2018-06-22 08:56:11,993 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:56:11 BoogieIcfgContainer [2018-06-22 08:56:11,994 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 08:56:11,994 INFO ]: Toolchain (without parser) took 58212.11 ms. Allocated memory was 303.0 MB in the beginning and 2.9 GB in the end (delta: 2.6 GB). Free memory was 245.5 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.8 GB. Max. memory is 3.6 GB. [2018-06-22 08:56:11,995 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 08:56:11,998 INFO ]: ChcToBoogie took 87.44 ms. Allocated memory is still 303.0 MB. Free memory was 245.5 MB in the beginning and 242.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:56:11,999 INFO ]: Boogie Preprocessor took 63.05 ms. Allocated memory is still 303.0 MB. Free memory was 242.5 MB in the beginning and 240.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:56:12,000 INFO ]: RCFGBuilder took 423.83 ms. Allocated memory is still 303.0 MB. Free memory was 240.5 MB in the beginning and 213.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:56:12,000 INFO ]: TraceAbstraction took 57627.21 ms. Allocated memory was 303.0 MB in the beginning and 2.9 GB in the end (delta: 2.6 GB). Free memory was 213.5 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 3.6 GB. [2018-06-22 08:56:12,003 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 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 87.44 ms. Allocated memory is still 303.0 MB. Free memory was 245.5 MB in the beginning and 242.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.05 ms. Allocated memory is still 303.0 MB. Free memory was 242.5 MB in the beginning and 240.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 423.83 ms. Allocated memory is still 303.0 MB. Free memory was 240.5 MB in the beginning and 213.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57627.21 ms. Allocated memory was 303.0 MB in the beginning and 2.9 GB in the end (delta: 2.6 GB). Free memory was 213.5 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.8 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 transforming 22 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 57.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s 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, 1.1s 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, 0.2s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 378 SizeOfPredicates, 4 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 47 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_i4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_08-56-12-018.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MESI_i4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_08-56-12-018.csv Completed graceful shutdown