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/metros_4_e2_968_e4_801.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:20:08,272 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:20:08,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:20:08,289 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:20:08,289 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:20:08,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:20:08,295 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:20:08,297 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:20:08,299 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:20:08,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:20:08,300 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:20:08,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:20:08,301 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:20:08,304 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:20:08,311 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:20:08,312 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:20:08,313 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:20:08,317 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:20:08,318 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:20:08,319 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:20:08,320 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:20:08,323 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:20:08,323 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:20:08,323 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:20:08,324 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:20:08,324 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:20:08,327 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:20:08,328 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:20:08,329 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:20:08,329 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:20:08,329 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:20:08,330 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:20:08,330 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:20:08,335 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:20:08,335 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:20:08,336 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:20:08,357 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:20:08,358 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:20:08,358 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:20:08,358 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:20:08,359 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:20:08,359 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:20:08,359 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:20:08,364 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:20:08,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:20:08,364 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:20:08,365 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:20:08,365 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:20:08,365 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:20:08,365 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:20:08,365 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:20:08,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:20:08,366 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:20:08,367 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:20:08,368 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:20:08,423 INFO ]: Repository-Root is: /tmp [2018-06-22 09:20:08,440 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:20:08,445 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:20:08,448 INFO ]: Initializing SmtParser... [2018-06-22 09:20:08,448 INFO ]: SmtParser initialized [2018-06-22 09:20:08,449 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e4_801.smt2 [2018-06-22 09:20:08,450 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 09:20:08,541 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e4_801.smt2 unknown [2018-06-22 09:20:08,990 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e4_801.smt2 [2018-06-22 09:20:08,995 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:20:09,005 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:20:09,005 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:20:09,005 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:20:09,005 INFO ]: ChcToBoogie initialized [2018-06-22 09:20:09,009 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:20:08" (1/1) ... [2018-06-22 09:20:09,114 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09 Unit [2018-06-22 09:20:09,114 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:20:09,114 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:20:09,114 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:20:09,114 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:20:09,144 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (1/1) ... [2018-06-22 09:20:09,144 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (1/1) ... [2018-06-22 09:20:09,167 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (1/1) ... [2018-06-22 09:20:09,167 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (1/1) ... [2018-06-22 09:20:09,186 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (1/1) ... [2018-06-22 09:20:09,188 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (1/1) ... [2018-06-22 09:20:09,190 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (1/1) ... [2018-06-22 09:20:09,195 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:20:09,196 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:20:09,196 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:20:09,196 INFO ]: RCFGBuilder initialized [2018-06-22 09:20:09,197 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (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 09:20:09,215 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:20:09,215 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:20:09,215 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:20:09,215 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:20:09,216 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:20:09,216 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 09:20:09,631 INFO ]: Using library mode [2018-06-22 09:20:09,631 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:20:09 BoogieIcfgContainer [2018-06-22 09:20:09,631 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:20:09,633 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:20:09,633 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:20:09,640 INFO ]: TraceAbstraction initialized [2018-06-22 09:20:09,640 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:20:08" (1/3) ... [2018-06-22 09:20:09,641 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d4cbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:20:09, skipping insertion in model container [2018-06-22 09:20:09,641 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:20:09" (2/3) ... [2018-06-22 09:20:09,641 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d4cbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:20:09, skipping insertion in model container [2018-06-22 09:20:09,641 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:20:09" (3/3) ... [2018-06-22 09:20:09,643 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:20:09,653 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:20:09,661 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:20:09,703 INFO ]: Using default assertion order modulation [2018-06-22 09:20:09,703 INFO ]: Interprodecural is true [2018-06-22 09:20:09,703 INFO ]: Hoare is false [2018-06-22 09:20:09,703 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:20:09,703 INFO ]: Backedges is TWOTRACK [2018-06-22 09:20:09,703 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:20:09,703 INFO ]: Difference is false [2018-06-22 09:20:09,703 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:20:09,703 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:20:09,717 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:20:09,725 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:20:09,725 INFO ]: Found error trace [2018-06-22 09:20:09,726 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:20:09,726 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:20:09,730 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:20:09,731 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:20:09,732 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:20:09,763 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:09,763 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:20:09,763 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:09,870 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:20:10,004 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:20:10,006 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:20:10,006 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:20:10,007 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:20:10,018 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:20:10,018 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:20:10,021 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:20:10,095 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:20:10,095 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:20:10,096 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:20:10,097 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:20:10,097 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:20:10,103 INFO ]: With dead ends: 9 [2018-06-22 09:20:10,103 INFO ]: Without dead ends: 9 [2018-06-22 09:20:10,104 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 09:20:10,118 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:20:10,146 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:20:10,147 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:20:10,147 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:20:10,149 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:20:10,149 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:20:10,149 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:20:10,149 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:20:10,149 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:20:10,149 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:20:10,149 INFO ]: Found error trace [2018-06-22 09:20:10,149 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:20:10,150 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:20:10,152 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:20:10,152 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:20:10,152 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:20:10,153 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:10,153 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:20:10,153 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:10,286 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:20:10,531 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:20:10,531 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:20:10,531 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 09:20:10,547 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:20:10,700 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:20:10,712 INFO ]: Computing forward predicates... [2018-06-22 09:20:11,005 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:20:11,041 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:20:11,041 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 09:20:11,041 INFO ]: Interpolant automaton has 6 states [2018-06-22 09:20:11,041 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 09:20:11,042 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:20:11,042 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 09:20:11,206 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:20:11,206 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:20:11,207 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:20:11,208 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 09:20:11,208 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:20:11,208 INFO ]: With dead ends: 11 [2018-06-22 09:20:11,208 INFO ]: Without dead ends: 11 [2018-06-22 09:20:11,209 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:20:11,209 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:20:11,210 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:20:11,210 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:20:11,210 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:20:11,210 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 09:20:11,211 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:20:11,211 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:20:11,211 INFO ]: Interpolant automaton has 6 states. [2018-06-22 09:20:11,211 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:20:11,211 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:20:11,211 INFO ]: Found error trace [2018-06-22 09:20:11,211 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:20:11,211 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:20:11,211 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 09:20:11,211 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:20:11,211 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:20:11,213 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:11,213 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:20:11,213 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:11,414 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:20:12,192 WARN ]: Spent 497.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2018-06-22 09:20:12,579 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2018-06-22 09:20:12,590 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:20:12,590 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:20:12,590 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 09:20:12,598 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:20:12,827 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:20:12,827 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:20:12,836 INFO ]: Computing forward predicates... [2018-06-22 09:20:13,328 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-06-22 09:20:13,420 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:20:13,443 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:20:13,443 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:20:13,443 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:20:13,443 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:20:13,443 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:20:13,443 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:20:13,718 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:20:13,718 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 09:20:13,719 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:20:13,719 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:20:13,719 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:20:13,719 INFO ]: With dead ends: 13 [2018-06-22 09:20:13,720 INFO ]: Without dead ends: 13 [2018-06-22 09:20:13,720 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:20:13,720 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 09:20:13,721 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 09:20:13,721 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 09:20:13,722 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 09:20:13,722 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 09:20:13,722 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:20:13,722 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 09:20:13,722 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:20:13,722 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 09:20:13,723 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 09:20:13,723 INFO ]: Found error trace [2018-06-22 09:20:13,723 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:20:13,723 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:20:13,723 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 09:20:13,723 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:20:13,723 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:20:13,724 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:13,724 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:20:13,724 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:13,960 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:20:14,765 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 24 [2018-06-22 09:20:15,268 WARN ]: Spent 475.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 20 [2018-06-22 09:20:16,225 WARN ]: Spent 834.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 29 [2018-06-22 09:20:17,352 WARN ]: Spent 1.05 s on a formula simplification. DAG size of input: 291 DAG size of output: 32 [2018-06-22 09:20:17,362 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:20:17,362 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:20:17,362 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:20:17,384 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:20:17,605 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 09:20:17,605 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:20:17,614 INFO ]: Computing forward predicates... [2018-06-22 09:20:18,010 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:20:18,033 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:20:18,033 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 09:20:18,033 INFO ]: Interpolant automaton has 14 states [2018-06-22 09:20:18,034 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 09:20:18,034 INFO ]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-06-22 09:20:18,034 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 09:20:18,321 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:20:18,321 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 09:20:18,321 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 09:20:18,321 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 09:20:18,321 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:20:18,322 INFO ]: With dead ends: 15 [2018-06-22 09:20:18,322 INFO ]: Without dead ends: 15 [2018-06-22 09:20:18,322 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-06-22 09:20:18,322 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 09:20:18,324 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 09:20:18,324 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 09:20:18,324 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 09:20:18,324 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 09:20:18,324 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:20:18,324 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 09:20:18,324 INFO ]: Interpolant automaton has 14 states. [2018-06-22 09:20:18,324 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 09:20:18,325 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 09:20:18,325 INFO ]: Found error trace [2018-06-22 09:20:18,325 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:20:18,325 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:20:18,325 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 4 times [2018-06-22 09:20:18,325 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:20:18,325 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:20:18,325 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:18,325 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:20:18,325 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:20:19,599 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 09:21:17,957 WARN ]: Removed 2 from assertion stack [2018-06-22 09:21:17,958 WARN ]: Verification canceled [2018-06-22 09:21:17,961 WARN ]: Timeout [2018-06-22 09:21:17,961 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:21:17 BoogieIcfgContainer [2018-06-22 09:21:17,961 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:21:17,962 INFO ]: Toolchain (without parser) took 68966.27 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 249.1 MB in the beginning and 400.9 MB in the end (delta: -151.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 09:21:17,962 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:21:17,969 INFO ]: ChcToBoogie took 108.78 ms. Allocated memory is still 307.8 MB. Free memory was 249.1 MB in the beginning and 246.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:21:17,970 INFO ]: Boogie Preprocessor took 81.06 ms. Allocated memory is still 307.8 MB. Free memory was 246.1 MB in the beginning and 245.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:21:17,970 INFO ]: RCFGBuilder took 435.54 ms. Allocated memory is still 307.8 MB. Free memory was 245.1 MB in the beginning and 213.7 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 3.6 GB. [2018-06-22 09:21:17,970 INFO ]: TraceAbstraction took 68328.11 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 213.7 MB in the beginning and 400.9 MB in the end (delta: -187.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 09:21:17,973 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 108.78 ms. Allocated memory is still 307.8 MB. Free memory was 249.1 MB in the beginning and 246.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 81.06 ms. Allocated memory is still 307.8 MB. Free memory was 246.1 MB in the beginning and 245.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 435.54 ms. Allocated memory is still 307.8 MB. Free memory was 245.1 MB in the beginning and 213.7 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 68328.11 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 213.7 MB in the beginning and 400.9 MB in the end (delta: -187.2 MB). Peak memory consumption was 1.3 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 15 with TraceHistMax 7, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 2953. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 68.2s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 110 SDs, 0 SdLazy, 74 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3738 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 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/metros_4_e2_968_e4_801.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-21-17-988.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e2_968_e4_801.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-21-17-988.csv Completed graceful shutdown