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_1_e7_1255_e8_598.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:01:49,284 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:01:49,286 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:01:49,300 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:01:49,300 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:01:49,301 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:01:49,303 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:01:49,305 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:01:49,307 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:01:49,308 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:01:49,309 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:01:49,310 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:01:49,311 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:01:49,311 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:01:49,314 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:01:49,315 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:01:49,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:01:49,320 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:01:49,329 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:01:49,330 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:01:49,331 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:01:49,333 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:01:49,333 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:01:49,333 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:01:49,338 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:01:49,339 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:01:49,339 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:01:49,340 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:01:49,344 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:01:49,344 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:01:49,345 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:01:49,346 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:01:49,346 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:01:49,346 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:01:49,347 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:01:49,347 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:01:49,362 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:01:49,362 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:01:49,363 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:01:49,363 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:01:49,364 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:01:49,365 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:01:49,365 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:01:49,365 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:01:49,365 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:01:49,365 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:01:49,366 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:01:49,366 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:01:49,366 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:01:49,366 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:01:49,366 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:01:49,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:01:49,367 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:01:49,369 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:01:49,369 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:01:49,421 INFO ]: Repository-Root is: /tmp [2018-06-22 09:01:49,433 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:01:49,436 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:01:49,438 INFO ]: Initializing SmtParser... [2018-06-22 09:01:49,438 INFO ]: SmtParser initialized [2018-06-22 09:01:49,439 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 [2018-06-22 09:01:49,440 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 09:01:49,537 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 unknown [2018-06-22 09:01:50,022 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 [2018-06-22 09:01:50,027 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:01:50,041 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:01:50,041 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:01:50,042 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:01:50,042 INFO ]: ChcToBoogie initialized [2018-06-22 09:01:50,045 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:01:50" (1/1) ... [2018-06-22 09:01:50,162 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50 Unit [2018-06-22 09:01:50,162 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:01:50,162 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:01:50,162 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:01:50,162 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:01:50,199 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (1/1) ... [2018-06-22 09:01:50,199 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (1/1) ... [2018-06-22 09:01:50,207 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (1/1) ... [2018-06-22 09:01:50,207 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (1/1) ... [2018-06-22 09:01:50,218 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (1/1) ... [2018-06-22 09:01:50,220 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (1/1) ... [2018-06-22 09:01:50,222 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (1/1) ... [2018-06-22 09:01:50,226 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:01:50,227 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:01:50,227 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:01:50,227 INFO ]: RCFGBuilder initialized [2018-06-22 09:01:50,228 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 09:01:50,242 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:01:50,242 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:01:50,242 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:01:50,242 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:01:50,242 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:01:50,242 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:01:50,659 INFO ]: Using library mode [2018-06-22 09:01:50,660 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:01:50 BoogieIcfgContainer [2018-06-22 09:01:50,660 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:01:50,662 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:01:50,662 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:01:50,668 INFO ]: TraceAbstraction initialized [2018-06-22 09:01:50,669 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:01:50" (1/3) ... [2018-06-22 09:01:50,670 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bbf7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:01:50, skipping insertion in model container [2018-06-22 09:01:50,670 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:50" (2/3) ... [2018-06-22 09:01:50,670 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bbf7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:01:50, skipping insertion in model container [2018-06-22 09:01:50,670 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:01:50" (3/3) ... [2018-06-22 09:01:50,672 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:01:50,682 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:01:50,694 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:01:50,748 INFO ]: Using default assertion order modulation [2018-06-22 09:01:50,748 INFO ]: Interprodecural is true [2018-06-22 09:01:50,748 INFO ]: Hoare is false [2018-06-22 09:01:50,748 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:01:50,748 INFO ]: Backedges is TWOTRACK [2018-06-22 09:01:50,749 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:01:50,749 INFO ]: Difference is false [2018-06-22 09:01:50,749 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:01:50,749 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:01:50,764 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:01:50,777 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:01:50,777 INFO ]: Found error trace [2018-06-22 09:01:50,778 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:50,778 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:50,783 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:01:50,785 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:50,785 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:50,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:50,820 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:01:50,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:50,922 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:51,066 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:51,068 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:01:51,068 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:01:51,070 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:01:51,080 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:01:51,081 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:01:51,083 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:01:51,153 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:01:51,154 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:01:51,155 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:01:51,156 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:01:51,156 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:01:51,163 INFO ]: With dead ends: 9 [2018-06-22 09:01:51,163 INFO ]: Without dead ends: 9 [2018-06-22 09:01:51,165 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 09:01:51,182 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:01:51,210 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:01:51,211 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:01:51,211 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:01:51,212 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:01:51,212 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:01:51,212 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:01:51,212 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:01:51,212 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:01:51,213 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:01:51,213 INFO ]: Found error trace [2018-06-22 09:01:51,213 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:51,213 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:51,213 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:01:51,213 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:51,213 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:51,214 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:51,214 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:01:51,214 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:51,318 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:51,497 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:51,497 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:01:51,497 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 09:01:51,506 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:01:51,678 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:51,690 INFO ]: Computing forward predicates... [2018-06-22 09:01:51,856 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:51,893 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:01:51,893 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 09:01:51,894 INFO ]: Interpolant automaton has 5 states [2018-06-22 09:01:51,894 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 09:01:51,894 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:01:51,894 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 09:01:52,014 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:01:52,015 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 09:01:52,015 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 09:01:52,015 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 09:01:52,015 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:01:52,015 INFO ]: With dead ends: 10 [2018-06-22 09:01:52,015 INFO ]: Without dead ends: 10 [2018-06-22 09:01:52,016 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:01:52,016 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 09:01:52,017 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 09:01:52,017 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 09:01:52,017 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 09:01:52,017 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 09:01:52,017 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:01:52,018 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 09:01:52,018 INFO ]: Interpolant automaton has 5 states. [2018-06-22 09:01:52,018 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 09:01:52,018 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 09:01:52,018 INFO ]: Found error trace [2018-06-22 09:01:52,018 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:52,018 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:52,018 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 09:01:52,018 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:52,018 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:52,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:52,019 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:01:52,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:52,086 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:52,511 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:52,511 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:01:52,511 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 09:01:52,526 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:01:52,682 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:01:52,682 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:52,688 INFO ]: Computing forward predicates... [2018-06-22 09:01:53,269 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:53,290 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:01:53,325 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 09:01:53,325 INFO ]: Interpolant automaton has 8 states [2018-06-22 09:01:53,325 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 09:01:53,325 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 09:01:53,325 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 09:01:53,781 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:01:53,781 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:01:53,782 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:01:53,782 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 09:01:53,782 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:01:53,782 INFO ]: With dead ends: 11 [2018-06-22 09:01:53,782 INFO ]: Without dead ends: 11 [2018-06-22 09:01:53,783 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:01:53,783 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:01:53,784 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:01:53,784 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:01:53,784 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:01:53,784 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 09:01:53,785 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:01:53,785 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:01:53,785 INFO ]: Interpolant automaton has 8 states. [2018-06-22 09:01:53,785 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:01:53,785 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:01:53,785 INFO ]: Found error trace [2018-06-22 09:01:53,785 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:53,785 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:53,785 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 09:01:53,785 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:53,785 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:53,788 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:53,788 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:01:53,788 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:53,950 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:54,994 WARN ]: Spent 711.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2018-06-22 09:01:55,315 WARN ]: Spent 261.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2018-06-22 09:01:55,349 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:55,349 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:01:55,349 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 09:01:55,356 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:01:55,539 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 09:01:55,539 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:55,548 INFO ]: Computing forward predicates... [2018-06-22 09:01:55,900 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 09:01:56,379 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 09:01:56,824 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 09:01:57,252 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 09:01:57,411 WARN ]: Simplifying disjunction of 24192 conjuctions. This might take some time... Received shutdown request... [2018-06-22 09:03:09,191 INFO ]: Timeout while computing interpolants [2018-06-22 09:03:09,391 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:03:09,391 WARN ]: Verification canceled [2018-06-22 09:03:09,396 WARN ]: Timeout [2018-06-22 09:03:09,397 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:03:09 BoogieIcfgContainer [2018-06-22 09:03:09,397 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:03:09,398 INFO ]: Toolchain (without parser) took 79370.13 ms. Allocated memory was 304.6 MB in the beginning and 1.0 GB in the end (delta: 741.3 MB). Free memory was 245.0 MB in the beginning and 385.6 MB in the end (delta: -140.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 09:03:09,399 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:03:09,399 INFO ]: ChcToBoogie took 120.45 ms. Allocated memory is still 304.6 MB. Free memory was 245.0 MB in the beginning and 242.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:03:09,399 INFO ]: Boogie Preprocessor took 63.82 ms. Allocated memory is still 304.6 MB. Free memory was 242.0 MB in the beginning and 241.0 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 09:03:09,400 INFO ]: RCFGBuilder took 432.98 ms. Allocated memory is still 304.6 MB. Free memory was 241.0 MB in the beginning and 208.6 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 3.6 GB. [2018-06-22 09:03:09,400 INFO ]: TraceAbstraction took 78734.25 ms. Allocated memory was 304.6 MB in the beginning and 1.0 GB in the end (delta: 741.3 MB). Free memory was 207.6 MB in the beginning and 385.6 MB in the end (delta: -178.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 09:03:09,403 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 120.45 ms. Allocated memory is still 304.6 MB. Free memory was 245.0 MB in the beginning and 242.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.82 ms. Allocated memory is still 304.6 MB. Free memory was 242.0 MB in the beginning and 241.0 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 432.98 ms. Allocated memory is still 304.6 MB. Free memory was 241.0 MB in the beginning and 208.6 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 78734.25 ms. Allocated memory was 304.6 MB in the beginning and 1.0 GB in the end (delta: 741.3 MB). Free memory was 207.6 MB in the beginning and 385.6 MB in the end (delta: -178.0 MB). Peak memory consumption was 1.0 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 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 24192 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 78.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 40 SDs, 0 SdLazy, 34 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1252 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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_1_e7_1255_e8_598.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-03-09-426.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e7_1255_e8_598.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-03-09-426.csv Completed graceful shutdown