java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/MOESI_1_e2_982_e7_492.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:58:11,018 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:58:11,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:58:11,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:58:11,038 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:58:11,039 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:58:11,049 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:58:11,052 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:58:11,054 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:58:11,065 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:58:11,066 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:58:11,066 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:58:11,067 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:58:11,072 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:58:11,073 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:58:11,086 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:58:11,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:58:11,090 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:58:11,100 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:58:11,101 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:58:11,103 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:58:11,107 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:58:11,107 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:58:11,108 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:58:11,109 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:58:11,110 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:58:11,112 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:58:11,113 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:58:11,114 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:58:11,114 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:58:11,127 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:58:11,128 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:58:11,128 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:58:11,129 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:58:11,130 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:58:11,130 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:58:11,166 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:58:11,171 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:58:11,172 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:58:11,172 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:58:11,173 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:58:11,173 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:58:11,173 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:58:11,173 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:58:11,174 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:58:11,174 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:58:11,174 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:58:11,174 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:58:11,174 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:58:11,176 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:58:11,176 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:58:11,176 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:58:11,177 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:58:11,177 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:58:11,177 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:58:11,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:58:11,177 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:58:11,179 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:58:11,179 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:58:11,237 INFO ]: Repository-Root is: /tmp [2018-06-25 16:58:11,253 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:58:11,257 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:58:11,259 INFO ]: Initializing SmtParser... [2018-06-25 16:58:11,259 INFO ]: SmtParser initialized [2018-06-25 16:58:11,260 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MOESI_1_e2_982_e7_492.smt2 [2018-06-25 16:58:11,261 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-25 16:58:11,420 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MOESI_1_e2_982_e7_492.smt2 unknown [2018-06-25 16:58:11,889 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MOESI_1_e2_982_e7_492.smt2 [2018-06-25 16:58:11,900 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:58:11,908 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:58:11,909 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:58:11,909 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:58:11,909 INFO ]: ChcToBoogie initialized [2018-06-25 16:58:11,913 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:58:11" (1/1) ... [2018-06-25 16:58:12,121 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12 Unit [2018-06-25 16:58:12,122 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:58:12,123 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:58:12,123 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:58:12,123 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:58:12,149 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (1/1) ... [2018-06-25 16:58:12,150 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (1/1) ... [2018-06-25 16:58:12,162 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (1/1) ... [2018-06-25 16:58:12,162 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (1/1) ... [2018-06-25 16:58:12,175 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (1/1) ... [2018-06-25 16:58:12,177 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (1/1) ... [2018-06-25 16:58:12,179 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (1/1) ... [2018-06-25 16:58:12,183 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:58:12,184 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:58:12,184 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:58:12,184 INFO ]: RCFGBuilder initialized [2018-06-25 16:58:12,185 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:58:12,196 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:58:12,196 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:58:12,196 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:58:12,196 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:58:12,196 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:58:12,196 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 16:58:12,686 INFO ]: Using library mode [2018-06-25 16:58:12,686 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:58:12 BoogieIcfgContainer [2018-06-25 16:58:12,686 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:58:12,688 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:58:12,688 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:58:12,692 INFO ]: TraceAbstraction initialized [2018-06-25 16:58:12,692 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:58:11" (1/3) ... [2018-06-25 16:58:12,693 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d45db70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:58:12, skipping insertion in model container [2018-06-25 16:58:12,693 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:58:12" (2/3) ... [2018-06-25 16:58:12,693 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d45db70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:58:12, skipping insertion in model container [2018-06-25 16:58:12,693 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:58:12" (3/3) ... [2018-06-25 16:58:12,696 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:58:12,707 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:58:12,775 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:58:12,869 INFO ]: Using default assertion order modulation [2018-06-25 16:58:12,870 INFO ]: Interprodecural is true [2018-06-25 16:58:12,870 INFO ]: Hoare is false [2018-06-25 16:58:12,870 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:58:12,870 INFO ]: Backedges is TWOTRACK [2018-06-25 16:58:12,870 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:58:12,870 INFO ]: Difference is false [2018-06-25 16:58:12,870 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:58:12,870 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:58:12,912 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:58:12,937 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:58:12,938 INFO ]: Found error trace [2018-06-25 16:58:12,939 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:58:12,939 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:58:12,945 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 16:58:12,947 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:58:12,947 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:58:13,005 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:58:13,011 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:58:13,011 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:58:13,161 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:58:13,384 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:58:13,387 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:58:13,387 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:58:13,389 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:58:13,406 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:58:13,407 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:58:13,411 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:58:13,540 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:58:13,541 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:58:13,541 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:58:13,543 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:58:13,543 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:58:13,555 INFO ]: With dead ends: 9 [2018-06-25 16:58:13,555 INFO ]: Without dead ends: 9 [2018-06-25 16:58:13,557 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:58:13,577 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:58:13,609 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:58:13,611 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:58:13,611 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:58:13,613 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:58:13,613 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:58:13,613 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:58:13,613 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:58:13,613 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:58:13,614 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:58:13,614 INFO ]: Found error trace [2018-06-25 16:58:13,614 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:58:13,614 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:58:13,614 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 16:58:13,614 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:58:13,614 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:58:13,615 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:58:13,615 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:58:13,615 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:58:13,856 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:58:14,146 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:58:14,146 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:58:14,146 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:58:14,177 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:58:14,440 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:58:14,453 INFO ]: Computing forward predicates... [2018-06-25 16:58:15,328 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:58:15,340 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:58:15,356 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:58:15,363 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:58:15,389 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:58:15,397 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 16:58:15,460 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:58:15,489 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:58:15,497 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:58:15,498 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:58:15,539 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:58:15,549 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 16:58:15,939 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:58:15,967 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:58:15,993 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 16:58:15,999 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 16:58:29,606 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:58:29,657 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:58:29,657 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 16:58:29,657 INFO ]: Interpolant automaton has 6 states [2018-06-25 16:58:29,658 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 16:58:29,658 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 16:58:29,658 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 16:58:29,738 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:58:29,751 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:58:29,752 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:58:29,752 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 16:58:29,752 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:58:29,753 INFO ]: With dead ends: 10 [2018-06-25 16:58:29,753 INFO ]: Without dead ends: 10 [2018-06-25 16:58:29,754 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 16:58:29,754 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:58:29,755 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:58:29,755 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:58:29,755 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:58:29,755 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:58:29,755 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:58:29,755 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:58:29,756 INFO ]: Interpolant automaton has 6 states. [2018-06-25 16:58:29,756 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:58:29,759 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:58:29,759 INFO ]: Found error trace [2018-06-25 16:58:29,759 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:58:29,759 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:58:29,759 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 16:58:29,759 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:58:29,759 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:58:29,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:58:29,760 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:58:29,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:58:29,939 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:58:32,787 WARN ]: Spent 2.47 s on a formula simplification. DAG size of input: 109 DAG size of output: 55 [2018-06-25 16:58:32,822 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:58:32,822 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:58:32,822 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:58:32,844 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:58:33,030 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:58:33,030 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:58:33,041 INFO ]: Computing forward predicates... [2018-06-25 16:58:33,459 WARN ]: expecting exponential blowup for input size 15 [2018-06-25 16:58:33,903 WARN ]: Simplifying disjunction of 15552 conjuctions. This might take some time... Received shutdown request... [2018-06-25 16:59:31,349 INFO ]: Timeout while computing interpolants [2018-06-25 16:59:31,550 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:59:31,550 WARN ]: Verification canceled [2018-06-25 16:59:31,556 WARN ]: Timeout [2018-06-25 16:59:31,556 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:59:31 BoogieIcfgContainer [2018-06-25 16:59:31,556 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:59:31,557 INFO ]: Toolchain (without parser) took 79657.15 ms. Allocated memory was 297.3 MB in the beginning and 1.1 GB in the end (delta: 841.5 MB). Free memory was 237.6 MB in the beginning and 805.8 MB in the end (delta: -568.1 MB). Peak memory consumption was 913.3 MB. Max. memory is 3.6 GB. [2018-06-25 16:59:31,558 INFO ]: SmtParser took 0.11 ms. Allocated memory is still 297.3 MB. Free memory is still 262.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:59:31,574 INFO ]: ChcToBoogie took 213.80 ms. Allocated memory is still 297.3 MB. Free memory was 237.6 MB in the beginning and 234.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:59:31,575 INFO ]: Boogie Preprocessor took 60.20 ms. Allocated memory is still 297.3 MB. Free memory was 234.7 MB in the beginning and 232.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:59:31,575 INFO ]: RCFGBuilder took 502.31 ms. Allocated memory is still 297.3 MB. Free memory was 232.7 MB in the beginning and 202.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 3.6 GB. [2018-06-25 16:59:31,576 INFO ]: TraceAbstraction took 78868.43 ms. Allocated memory was 297.3 MB in the beginning and 1.1 GB in the end (delta: 841.5 MB). Free memory was 201.5 MB in the beginning and 805.8 MB in the end (delta: -604.3 MB). Peak memory consumption was 877.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:59:31,588 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.11 ms. Allocated memory is still 297.3 MB. Free memory is still 262.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 213.80 ms. Allocated memory is still 297.3 MB. Free memory was 237.6 MB in the beginning and 234.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 60.20 ms. Allocated memory is still 297.3 MB. Free memory was 234.7 MB in the beginning and 232.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 502.31 ms. Allocated memory is still 297.3 MB. Free memory was 232.7 MB in the beginning and 202.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 78868.43 ms. Allocated memory was 297.3 MB in the beginning and 1.1 GB in the end (delta: 841.5 MB). Free memory was 201.5 MB in the beginning and 805.8 MB in the end (delta: -604.3 MB). Peak memory consumption was 877.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 15552 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 78.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 SizeOfPredicates, 1 NumberOfNonLiveVariables, 591 ConjunctsInSsa, 32 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/MOESI_1_e2_982_e7_492.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-59-31-602.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MOESI_1_e2_982_e7_492.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-59-31-602.csv Completed graceful shutdown