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/ticket3i_5_e7_3307.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 17:55:10,295 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 17:55:10,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 17:55:10,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 17:55:10,313 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 17:55:10,317 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 17:55:10,318 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 17:55:10,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 17:55:10,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 17:55:10,330 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 17:55:10,331 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 17:55:10,331 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 17:55:10,343 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 17:55:10,344 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 17:55:10,345 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 17:55:10,346 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 17:55:10,348 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 17:55:10,354 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 17:55:10,356 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 17:55:10,360 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 17:55:10,361 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 17:55:10,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 17:55:10,367 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 17:55:10,367 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 17:55:10,369 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 17:55:10,370 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 17:55:10,371 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 17:55:10,374 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 17:55:10,375 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 17:55:10,375 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 17:55:10,376 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 17:55:10,380 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 17:55:10,380 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 17:55:10,381 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 17:55:10,382 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 17:55:10,382 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 17:55:10,404 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 17:55:10,405 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 17:55:10,405 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 17:55:10,405 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 17:55:10,406 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 17:55:10,407 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 17:55:10,407 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 17:55:10,407 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 17:55:10,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 17:55:10,408 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 17:55:10,408 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 17:55:10,408 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 17:55:10,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 17:55:10,408 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 17:55:10,408 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 17:55:10,412 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 17:55:10,412 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 17:55:10,412 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 17:55:10,412 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 17:55:10,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 17:55:10,413 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 17:55:10,414 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 17:55:10,415 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 17:55:10,471 INFO ]: Repository-Root is: /tmp [2018-06-25 17:55:10,490 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 17:55:10,497 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 17:55:10,498 INFO ]: Initializing SmtParser... [2018-06-25 17:55:10,499 INFO ]: SmtParser initialized [2018-06-25 17:55:10,499 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_5_e7_3307.smt2 [2018-06-25 17:55:10,501 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 17:55:10,613 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_5_e7_3307.smt2 unknown [2018-06-25 17:55:11,347 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_5_e7_3307.smt2 [2018-06-25 17:55:11,351 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 17:55:11,359 INFO ]: Walking toolchain with 4 elements. [2018-06-25 17:55:11,360 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 17:55:11,360 INFO ]: Initializing ChcToBoogie... [2018-06-25 17:55:11,360 INFO ]: ChcToBoogie initialized [2018-06-25 17:55:11,363 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:55:11" (1/1) ... [2018-06-25 17:55:11,452 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11 Unit [2018-06-25 17:55:11,452 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 17:55:11,454 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 17:55:11,454 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 17:55:11,454 INFO ]: Boogie Preprocessor initialized [2018-06-25 17:55:11,505 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (1/1) ... [2018-06-25 17:55:11,505 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (1/1) ... [2018-06-25 17:55:11,534 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (1/1) ... [2018-06-25 17:55:11,535 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (1/1) ... [2018-06-25 17:55:11,553 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (1/1) ... [2018-06-25 17:55:11,555 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (1/1) ... [2018-06-25 17:55:11,559 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (1/1) ... [2018-06-25 17:55:11,568 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 17:55:11,568 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 17:55:11,568 INFO ]: Initializing RCFGBuilder... [2018-06-25 17:55:11,568 INFO ]: RCFGBuilder initialized [2018-06-25 17:55:11,570 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (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 17:55:11,597 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 17:55:11,598 INFO ]: Found specification of procedure gotoProc [2018-06-25 17:55:11,598 INFO ]: Found implementation of procedure gotoProc [2018-06-25 17:55:11,598 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 17:55:11,598 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 17:55:11,598 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 17:55:12,099 INFO ]: Using library mode [2018-06-25 17:55:12,100 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:55:12 BoogieIcfgContainer [2018-06-25 17:55:12,100 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 17:55:12,102 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 17:55:12,102 INFO ]: Initializing TraceAbstraction... [2018-06-25 17:55:12,106 INFO ]: TraceAbstraction initialized [2018-06-25 17:55:12,106 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:55:11" (1/3) ... [2018-06-25 17:55:12,107 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bcac08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 05:55:12, skipping insertion in model container [2018-06-25 17:55:12,107 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:55:11" (2/3) ... [2018-06-25 17:55:12,107 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bcac08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 05:55:12, skipping insertion in model container [2018-06-25 17:55:12,107 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:55:12" (3/3) ... [2018-06-25 17:55:12,110 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 17:55:12,121 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 17:55:12,132 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 17:55:12,212 INFO ]: Using default assertion order modulation [2018-06-25 17:55:12,221 INFO ]: Interprodecural is true [2018-06-25 17:55:12,221 INFO ]: Hoare is false [2018-06-25 17:55:12,221 INFO ]: Compute interpolants for FPandBP [2018-06-25 17:55:12,221 INFO ]: Backedges is TWOTRACK [2018-06-25 17:55:12,221 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 17:55:12,221 INFO ]: Difference is false [2018-06-25 17:55:12,221 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 17:55:12,221 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 17:55:12,252 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 17:55:12,286 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 17:55:12,286 INFO ]: Found error trace [2018-06-25 17:55:12,287 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:55:12,287 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:55:12,300 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 17:55:12,303 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:55:12,304 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:55:12,377 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:55:12,377 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:55:12,377 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:55:12,521 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:55:12,738 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:55:12,743 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 17:55:12,744 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 17:55:12,745 INFO ]: Interpolant automaton has 3 states [2018-06-25 17:55:12,762 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 17:55:12,762 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 17:55:12,765 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 17:55:12,880 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:55:12,880 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 17:55:12,883 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 17:55:12,884 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 17:55:12,884 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:55:12,897 INFO ]: With dead ends: 9 [2018-06-25 17:55:12,897 INFO ]: Without dead ends: 9 [2018-06-25 17:55:12,901 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 17:55:12,920 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 17:55:12,968 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 17:55:12,969 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 17:55:12,969 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 17:55:12,971 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 17:55:12,971 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:55:12,971 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 17:55:12,971 INFO ]: Interpolant automaton has 3 states. [2018-06-25 17:55:12,971 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 17:55:12,971 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 17:55:12,971 INFO ]: Found error trace [2018-06-25 17:55:12,971 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:55:12,972 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:55:12,972 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 17:55:12,972 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:55:12,972 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:55:12,973 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:55:12,973 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:55:12,973 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:55:13,109 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:55:13,410 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:55:13,410 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 17:55:13,410 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 17:55:13,432 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:55:13,628 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:55:13,643 INFO ]: Computing forward predicates... [2018-06-25 17:55:14,092 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 17:55:14,128 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 17:55:21,014 WARN ]: Spent 1.12 s on a formula simplification. DAG size of input: 102 DAG size of output: 10 [2018-06-25 17:55:21,020 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:55:21,067 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 17:55:21,067 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 17:55:21,067 INFO ]: Interpolant automaton has 5 states [2018-06-25 17:55:21,068 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 17:55:21,068 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 17:55:21,068 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 17:55:21,155 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:55:21,155 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 17:55:21,169 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 17:55:21,169 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 17:55:21,169 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:55:21,169 INFO ]: With dead ends: 10 [2018-06-25 17:55:21,169 INFO ]: Without dead ends: 10 [2018-06-25 17:55:21,170 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 17:55:21,170 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 17:55:21,171 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 17:55:21,172 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 17:55:21,172 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 17:55:21,172 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 17:55:21,172 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:55:21,172 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 17:55:21,172 INFO ]: Interpolant automaton has 5 states. [2018-06-25 17:55:21,172 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 17:55:21,172 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 17:55:21,172 INFO ]: Found error trace [2018-06-25 17:55:21,173 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:55:21,174 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:55:21,175 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 17:55:21,175 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:55:21,175 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:55:21,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:55:21,180 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:55:21,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:55:21,420 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:55:22,065 WARN ]: Spent 366.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-06-25 17:55:22,162 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:55:22,162 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 17:55:22,162 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 17:55:22,179 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 17:55:22,397 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 17:55:22,397 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:55:22,408 INFO ]: Computing forward predicates... [2018-06-25 17:55:22,614 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 17:55:22,679 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 17:55:22,695 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 17:55:22,726 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 17:55:22,727 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:55:22,729 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 17:55:22,785 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 17:55:23,649 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 17:55:44,564 WARN ]: Spent 1.09 s on a formula simplification. DAG size of input: 93 DAG size of output: 17 [2018-06-25 17:55:44,808 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 17:55:44,819 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:55:44,821 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:55:45,325 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 4 [2018-06-25 17:55:45,327 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:55:45,362 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 17:55:45,362 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-25 17:55:45,362 INFO ]: Interpolant automaton has 7 states [2018-06-25 17:55:45,362 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 17:55:45,363 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-25 17:55:45,363 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-25 17:55:45,626 WARN ]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-25 17:55:45,646 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:55:45,646 INFO ]: Finished difference Result 6 states and 6 transitions. [2018-06-25 17:55:45,648 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 17:55:45,648 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-25 17:55:45,648 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:55:45,648 INFO ]: With dead ends: 6 [2018-06-25 17:55:45,648 INFO ]: Without dead ends: 0 [2018-06-25 17:55:45,649 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-25 17:55:45,649 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 17:55:45,649 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 17:55:45,649 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 17:55:45,649 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 17:55:45,649 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-25 17:55:45,649 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:55:45,649 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 17:55:45,649 INFO ]: Interpolant automaton has 7 states. [2018-06-25 17:55:45,649 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 17:55:45,649 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 17:55:45,664 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 05:55:45 BoogieIcfgContainer [2018-06-25 17:55:45,664 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 17:55:45,665 INFO ]: Toolchain (without parser) took 34313.29 ms. Allocated memory was 309.3 MB in the beginning and 812.6 MB in the end (delta: 503.3 MB). Free memory was 241.7 MB in the beginning and 600.7 MB in the end (delta: -359.0 MB). Peak memory consumption was 144.3 MB. Max. memory is 3.6 GB. [2018-06-25 17:55:45,666 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 17:55:45,667 INFO ]: ChcToBoogie took 93.97 ms. Allocated memory is still 309.3 MB. Free memory was 241.7 MB in the beginning and 238.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:55:45,667 INFO ]: Boogie Preprocessor took 113.70 ms. Allocated memory is still 309.3 MB. Free memory was 238.7 MB in the beginning and 236.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:55:45,667 INFO ]: RCFGBuilder took 531.53 ms. Allocated memory is still 309.3 MB. Free memory was 236.7 MB in the beginning and 193.7 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 3.6 GB. [2018-06-25 17:55:45,669 INFO ]: TraceAbstraction took 33562.17 ms. Allocated memory was 309.3 MB in the beginning and 812.6 MB in the end (delta: 503.3 MB). Free memory was 193.7 MB in the beginning and 600.7 MB in the end (delta: -407.1 MB). Peak memory consumption was 96.3 MB. Max. memory is 3.6 GB. [2018-06-25 17:55:45,672 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 93.97 ms. Allocated memory is still 309.3 MB. Free memory was 241.7 MB in the beginning and 238.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 113.70 ms. Allocated memory is still 309.3 MB. Free memory was 238.7 MB in the beginning and 236.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 531.53 ms. Allocated memory is still 309.3 MB. Free memory was 236.7 MB in the beginning and 193.7 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 33562.17 ms. Allocated memory was 309.3 MB in the beginning and 812.6 MB in the end (delta: 503.3 MB). Free memory was 193.7 MB in the beginning and 600.7 MB in the end (delta: -407.1 MB). Peak memory consumption was 96.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 33.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 30 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 31.5s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 954 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1884 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_5_e7_3307.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_17-55-45-682.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_5_e7_3307.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_17-55-45-682.csv Received shutdown request...