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/metros_1_e7_1255_e8_598.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:32:21,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:32:21,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:32:21,379 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:32:21,379 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:32:21,380 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:32:21,384 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:32:21,386 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:32:21,387 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:32:21,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:32:21,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:32:21,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:32:21,391 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:32:21,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:32:21,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:32:21,397 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:32:21,398 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:32:21,411 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:32:21,413 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:32:21,414 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:32:21,415 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:32:21,417 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:32:21,417 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:32:21,417 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:32:21,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:32:21,419 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:32:21,423 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:32:21,423 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:32:21,424 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:32:21,425 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:32:21,425 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:32:21,429 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:32:21,429 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:32:21,430 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:32:21,431 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:32:21,431 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:32:21,453 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:32:21,453 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:32:21,454 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:32:21,454 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:32:21,457 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:32:21,457 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:32:21,457 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:32:21,458 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:32:21,458 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:32:21,458 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:32:21,458 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:32:21,458 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:32:21,459 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:32:21,459 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:32:21,459 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:32:21,459 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:32:21,459 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:32:21,460 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:32:21,460 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:32:21,460 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:32:21,460 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:32:21,462 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:32:21,463 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:32:21,509 INFO ]: Repository-Root is: /tmp [2018-06-25 16:32:21,526 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:32:21,531 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:32:21,532 INFO ]: Initializing SmtParser... [2018-06-25 16:32:21,533 INFO ]: SmtParser initialized [2018-06-25 16:32:21,533 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 [2018-06-25 16:32:21,534 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 16:32:21,620 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 unknown [2018-06-25 16:32:22,039 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e8_598.smt2 [2018-06-25 16:32:22,043 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:32:22,050 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:32:22,051 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:32:22,051 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:32:22,051 INFO ]: ChcToBoogie initialized [2018-06-25 16:32:22,054 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:32:22" (1/1) ... [2018-06-25 16:32:22,140 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22 Unit [2018-06-25 16:32:22,140 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:32:22,141 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:32:22,141 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:32:22,141 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:32:22,169 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (1/1) ... [2018-06-25 16:32:22,170 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (1/1) ... [2018-06-25 16:32:22,188 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (1/1) ... [2018-06-25 16:32:22,189 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (1/1) ... [2018-06-25 16:32:22,210 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (1/1) ... [2018-06-25 16:32:22,211 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (1/1) ... [2018-06-25 16:32:22,214 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (1/1) ... [2018-06-25 16:32:22,227 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:32:22,227 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:32:22,227 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:32:22,227 INFO ]: RCFGBuilder initialized [2018-06-25 16:32:22,228 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (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) [2018-06-25 16:32:22,270 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:32:22,270 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:32:22,271 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:32:22,271 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:32:22,271 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:32:22,271 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 [2018-06-25 16:32:22,719 INFO ]: Using library mode [2018-06-25 16:32:22,719 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:32:22 BoogieIcfgContainer [2018-06-25 16:32:22,719 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:32:22,721 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:32:22,721 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:32:22,724 INFO ]: TraceAbstraction initialized [2018-06-25 16:32:22,724 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:32:22" (1/3) ... [2018-06-25 16:32:22,725 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7097644a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:32:22, skipping insertion in model container [2018-06-25 16:32:22,725 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:32:22" (2/3) ... [2018-06-25 16:32:22,725 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7097644a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:32:22, skipping insertion in model container [2018-06-25 16:32:22,725 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:32:22" (3/3) ... [2018-06-25 16:32:22,727 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:32:22,737 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:32:22,745 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:32:22,802 INFO ]: Using default assertion order modulation [2018-06-25 16:32:22,803 INFO ]: Interprodecural is true [2018-06-25 16:32:22,803 INFO ]: Hoare is false [2018-06-25 16:32:22,803 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:32:22,803 INFO ]: Backedges is TWOTRACK [2018-06-25 16:32:22,803 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:32:22,803 INFO ]: Difference is false [2018-06-25 16:32:22,803 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:32:22,803 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:32:22,818 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:32:22,834 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:32:22,834 INFO ]: Found error trace [2018-06-25 16:32:22,835 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:32:22,835 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:32:22,843 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 16:32:22,845 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:32:22,845 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:32:22,876 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:32:22,876 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:32:22,876 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:32:22,988 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:32:23,136 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:32:23,138 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:32:23,138 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:32:23,139 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:32:23,149 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:32:23,150 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:32:23,153 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:32:23,245 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:32:23,245 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:32:23,246 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:32:23,247 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:32:23,247 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:32:23,258 INFO ]: With dead ends: 9 [2018-06-25 16:32:23,258 INFO ]: Without dead ends: 9 [2018-06-25 16:32:23,260 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 [2018-06-25 16:32:23,280 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:32:23,304 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:32:23,306 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:32:23,307 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:32:23,309 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:32:23,309 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:32:23,309 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:32:23,309 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:32:23,309 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:32:23,309 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:32:23,309 INFO ]: Found error trace [2018-06-25 16:32:23,309 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:32:23,309 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:32:23,309 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 16:32:23,310 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:32:23,310 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:32:23,310 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:32:23,310 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:32:23,310 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:32:23,450 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:32:23,650 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:32:23,650 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:32:23,650 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 16:32:23,658 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:32:23,802 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:32:23,812 INFO ]: Computing forward predicates... [2018-06-25 16:32:23,989 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:32:24,023 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:32:24,024 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 16:32:24,024 INFO ]: Interpolant automaton has 5 states [2018-06-25 16:32:24,024 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 16:32:24,024 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:32:24,025 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 16:32:24,146 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:32:24,146 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:32:24,147 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:32:24,147 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 16:32:24,147 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:32:24,147 INFO ]: With dead ends: 10 [2018-06-25 16:32:24,148 INFO ]: Without dead ends: 10 [2018-06-25 16:32:24,148 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 [2018-06-25 16:32:24,148 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:32:24,149 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:32:24,149 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:32:24,150 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:32:24,150 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:32:24,150 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:32:24,150 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:32:24,150 INFO ]: Interpolant automaton has 5 states. [2018-06-25 16:32:24,150 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:32:24,150 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:32:24,150 INFO ]: Found error trace [2018-06-25 16:32:24,150 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:32:24,150 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:32:24,150 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 16:32:24,150 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:32:24,150 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:32:24,152 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:32:24,152 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:32:24,152 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:32:24,246 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:32:24,461 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:32:24,461 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:32:24,461 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 16:32:24,469 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:32:24,631 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:32:24,631 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:32:24,637 INFO ]: Computing forward predicates... [2018-06-25 16:32:25,163 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:32:25,197 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:32:25,197 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-25 16:32:25,197 INFO ]: Interpolant automaton has 8 states [2018-06-25 16:32:25,197 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 16:32:25,197 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-25 16:32:25,197 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 16:32:25,588 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:32:25,588 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:32:25,589 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:32:25,589 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 16:32:25,589 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:32:25,589 INFO ]: With dead ends: 11 [2018-06-25 16:32:25,589 INFO ]: Without dead ends: 11 [2018-06-25 16:32:25,590 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:32:25,590 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:32:25,590 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:32:25,590 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:32:25,591 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:32:25,591 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 16:32:25,591 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:32:25,591 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:32:25,591 INFO ]: Interpolant automaton has 8 states. [2018-06-25 16:32:25,591 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:32:25,591 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:32:25,591 INFO ]: Found error trace [2018-06-25 16:32:25,591 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:32:25,591 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:32:25,591 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-25 16:32:25,591 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:32:25,592 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:32:25,592 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:32:25,592 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:32:25,592 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:32:25,694 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:32:26,146 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2018-06-25 16:32:26,295 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:32:26,295 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:32:26,295 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 [2018-06-25 16:32:26,301 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:32:26,487 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 16:32:26,487 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:32:26,495 INFO ]: Computing forward predicates... [2018-06-25 16:32:26,707 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:32:27,197 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:32:27,642 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 16:32:28,027 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:32:28,167 WARN ]: Simplifying disjunction of 24192 conjuctions. This might take some time... Received shutdown request... [2018-06-25 16:33:42,470 INFO ]: Timeout while computing interpolants [2018-06-25 16:33:42,671 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:33:42,671 WARN ]: Verification canceled [2018-06-25 16:33:42,677 WARN ]: Timeout [2018-06-25 16:33:42,677 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:33:42 BoogieIcfgContainer [2018-06-25 16:33:42,677 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:33:42,678 INFO ]: Toolchain (without parser) took 80633.96 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 847.8 MB). Free memory was 247.1 MB in the beginning and 600.4 MB in the end (delta: -353.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-25 16:33:42,690 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:33:42,690 INFO ]: ChcToBoogie took 89.65 ms. Allocated memory is still 306.7 MB. Free memory was 247.1 MB in the beginning and 243.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:33:42,691 INFO ]: Boogie Preprocessor took 86.15 ms. Allocated memory is still 306.7 MB. Free memory is still 243.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:33:42,691 INFO ]: RCFGBuilder took 492.22 ms. Allocated memory is still 306.7 MB. Free memory was 243.1 MB in the beginning and 209.0 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:33:42,691 INFO ]: TraceAbstraction took 79955.59 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 847.8 MB). Free memory was 209.0 MB in the beginning and 600.4 MB in the end (delta: -391.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-25 16:33:42,696 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 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.65 ms. Allocated memory is still 306.7 MB. Free memory was 247.1 MB in the beginning and 243.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 86.15 ms. Allocated memory is still 306.7 MB. Free memory is still 243.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 492.22 ms. Allocated memory is still 306.7 MB. Free memory was 243.1 MB in the beginning and 209.0 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 79955.59 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 847.8 MB). Free memory was 209.0 MB in the beginning and 600.4 MB in the end (delta: -391.4 MB). Peak memory consumption was 1.1 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, 79.8s 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, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s 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, 1.2s 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-0-2018-06-25_16-33-42-723.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-0-2018-06-25_16-33-42-723.csv Completed graceful shutdown