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/ex3_e7_590_e7_590.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 07:31:25,974 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 07:31:25,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 07:31:25,992 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 07:31:25,992 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 07:31:25,993 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 07:31:25,996 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 07:31:26,001 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 07:31:26,003 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 07:31:26,004 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 07:31:26,004 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 07:31:26,005 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 07:31:26,006 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 07:31:26,015 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 07:31:26,017 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 07:31:26,018 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 07:31:26,020 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 07:31:26,021 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 07:31:26,026 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 07:31:26,027 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 07:31:26,028 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 07:31:26,031 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 07:31:26,032 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 07:31:26,032 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 07:31:26,032 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 07:31:26,033 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 07:31:26,034 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 07:31:26,035 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 07:31:26,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 07:31:26,036 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 07:31:26,036 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 07:31:26,040 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 07:31:26,040 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 07:31:26,041 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 07:31:26,041 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 07:31:26,042 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 07:31:26,057 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 07:31:26,057 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 07:31:26,057 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 07:31:26,058 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 07:31:26,059 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 07:31:26,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 07:31:26,059 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 07:31:26,059 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 07:31:26,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 07:31:26,060 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 07:31:26,060 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 07:31:26,060 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 07:31:26,060 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 07:31:26,060 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 07:31:26,061 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 07:31:26,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 07:31:26,061 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 07:31:26,062 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 07:31:26,063 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 07:31:26,100 INFO ]: Repository-Root is: /tmp [2018-06-22 07:31:26,117 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 07:31:26,124 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 07:31:26,126 INFO ]: Initializing SmtParser... [2018-06-22 07:31:26,126 INFO ]: SmtParser initialized [2018-06-22 07:31:26,126 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e7_590_e7_590.smt2 [2018-06-22 07:31:26,128 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 07:31:26,216 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e7_590_e7_590.smt2 unknown [2018-06-22 07:31:26,587 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e7_590_e7_590.smt2 [2018-06-22 07:31:26,591 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 07:31:26,597 INFO ]: Walking toolchain with 4 elements. [2018-06-22 07:31:26,598 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 07:31:26,598 INFO ]: Initializing ChcToBoogie... [2018-06-22 07:31:26,598 INFO ]: ChcToBoogie initialized [2018-06-22 07:31:26,601 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:31:26" (1/1) ... [2018-06-22 07:31:26,662 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26 Unit [2018-06-22 07:31:26,663 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 07:31:26,663 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 07:31:26,663 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 07:31:26,663 INFO ]: Boogie Preprocessor initialized [2018-06-22 07:31:26,684 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (1/1) ... [2018-06-22 07:31:26,684 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (1/1) ... [2018-06-22 07:31:26,691 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (1/1) ... [2018-06-22 07:31:26,691 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (1/1) ... [2018-06-22 07:31:26,703 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (1/1) ... [2018-06-22 07:31:26,704 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (1/1) ... [2018-06-22 07:31:26,705 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (1/1) ... [2018-06-22 07:31:26,719 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 07:31:26,719 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 07:31:26,719 INFO ]: Initializing RCFGBuilder... [2018-06-22 07:31:26,719 INFO ]: RCFGBuilder initialized [2018-06-22 07:31:26,720 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (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 07:31:26,735 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 07:31:26,735 INFO ]: Found specification of procedure gotoProc [2018-06-22 07:31:26,735 INFO ]: Found implementation of procedure gotoProc [2018-06-22 07:31:26,735 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 07:31:26,735 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 07:31:26,735 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 07:31:27,073 INFO ]: Using library mode [2018-06-22 07:31:27,073 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:31:27 BoogieIcfgContainer [2018-06-22 07:31:27,073 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 07:31:27,075 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 07:31:27,075 INFO ]: Initializing TraceAbstraction... [2018-06-22 07:31:27,080 INFO ]: TraceAbstraction initialized [2018-06-22 07:31:27,080 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:31:26" (1/3) ... [2018-06-22 07:31:27,081 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364ce77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:31:27, skipping insertion in model container [2018-06-22 07:31:27,081 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:26" (2/3) ... [2018-06-22 07:31:27,081 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364ce77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:31:27, skipping insertion in model container [2018-06-22 07:31:27,081 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:31:27" (3/3) ... [2018-06-22 07:31:27,083 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 07:31:27,091 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 07:31:27,100 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 07:31:27,142 INFO ]: Using default assertion order modulation [2018-06-22 07:31:27,143 INFO ]: Interprodecural is true [2018-06-22 07:31:27,143 INFO ]: Hoare is false [2018-06-22 07:31:27,143 INFO ]: Compute interpolants for FPandBP [2018-06-22 07:31:27,143 INFO ]: Backedges is TWOTRACK [2018-06-22 07:31:27,143 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 07:31:27,143 INFO ]: Difference is false [2018-06-22 07:31:27,143 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 07:31:27,143 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 07:31:27,155 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 07:31:27,167 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 07:31:27,167 INFO ]: Found error trace [2018-06-22 07:31:27,168 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:31:27,168 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:31:27,171 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 07:31:27,173 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:31:27,173 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:31:27,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:27,205 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:31:27,205 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:27,285 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:27,367 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:27,369 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 07:31:27,369 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 07:31:27,370 INFO ]: Interpolant automaton has 3 states [2018-06-22 07:31:27,381 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 07:31:27,382 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 07:31:27,383 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 07:31:27,450 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:31:27,450 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 07:31:27,451 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 07:31:27,452 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 07:31:27,452 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:31:27,460 INFO ]: With dead ends: 9 [2018-06-22 07:31:27,460 INFO ]: Without dead ends: 9 [2018-06-22 07:31:27,465 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 07:31:27,483 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 07:31:27,497 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 07:31:27,499 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 07:31:27,499 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 07:31:27,500 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 07:31:27,500 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:31:27,500 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 07:31:27,500 INFO ]: Interpolant automaton has 3 states. [2018-06-22 07:31:27,500 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 07:31:27,501 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 07:31:27,501 INFO ]: Found error trace [2018-06-22 07:31:27,501 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:31:27,501 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:31:27,501 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 07:31:27,501 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:31:27,501 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:31:27,502 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:27,502 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:31:27,502 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:27,541 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:27,641 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:27,641 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:31:27,641 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 07:31:27,648 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:31:27,740 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:27,756 INFO ]: Computing forward predicates... [2018-06-22 07:31:27,897 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:27,918 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:31:27,918 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 07:31:27,918 INFO ]: Interpolant automaton has 5 states [2018-06-22 07:31:27,919 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 07:31:27,919 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 07:31:27,919 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 07:31:28,027 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:31:28,027 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 07:31:28,028 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 07:31:28,028 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 07:31:28,028 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:31:28,028 INFO ]: With dead ends: 10 [2018-06-22 07:31:28,029 INFO ]: Without dead ends: 10 [2018-06-22 07:31:28,029 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 07:31:28,029 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 07:31:28,031 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 07:31:28,031 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 07:31:28,031 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 07:31:28,031 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 07:31:28,031 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:31:28,031 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 07:31:28,031 INFO ]: Interpolant automaton has 5 states. [2018-06-22 07:31:28,031 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 07:31:28,032 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 07:31:28,032 INFO ]: Found error trace [2018-06-22 07:31:28,033 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:31:28,033 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:31:28,033 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 07:31:28,033 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:31:28,033 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:31:28,034 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:28,034 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:31:28,034 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:28,100 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:28,366 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 5 [2018-06-22 07:31:28,450 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:28,450 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:31:28,450 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 07:31:28,475 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 07:31:28,574 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 07:31:28,574 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:28,584 INFO ]: Computing forward predicates... [2018-06-22 07:31:29,309 WARN ]: Spent 275.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 15 [2018-06-22 07:31:30,003 WARN ]: Spent 493.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 24 [2018-06-22 07:31:30,028 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:30,049 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:31:30,049 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 07:31:30,050 INFO ]: Interpolant automaton has 8 states [2018-06-22 07:31:30,050 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 07:31:30,050 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 07:31:30,050 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 07:31:30,241 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2018-06-22 07:31:30,292 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:31:30,292 INFO ]: Finished difference Result 6 states and 6 transitions. [2018-06-22 07:31:30,292 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 07:31:30,292 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 07:31:30,292 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:31:30,292 INFO ]: With dead ends: 6 [2018-06-22 07:31:30,292 INFO ]: Without dead ends: 0 [2018-06-22 07:31:30,293 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-22 07:31:30,293 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 07:31:30,293 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 07:31:30,293 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 07:31:30,293 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 07:31:30,293 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 07:31:30,293 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:31:30,293 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 07:31:30,293 INFO ]: Interpolant automaton has 8 states. [2018-06-22 07:31:30,293 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 07:31:30,293 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 07:31:30,298 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:31:30 BoogieIcfgContainer [2018-06-22 07:31:30,298 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 07:31:30,299 INFO ]: Toolchain (without parser) took 3707.70 ms. Allocated memory was 308.8 MB in the beginning and 328.2 MB in the end (delta: 19.4 MB). Free memory was 261.2 MB in the beginning and 195.9 MB in the end (delta: 65.3 MB). Peak memory consumption was 84.7 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:30,300 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 07:31:30,300 INFO ]: ChcToBoogie took 65.19 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 258.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:30,301 INFO ]: Boogie Preprocessor took 55.42 ms. Allocated memory is still 308.8 MB. Free memory was 258.2 MB in the beginning and 257.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 07:31:30,301 INFO ]: RCFGBuilder took 354.02 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 243.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:30,302 INFO ]: TraceAbstraction took 3222.95 ms. Allocated memory was 308.8 MB in the beginning and 328.2 MB in the end (delta: 19.4 MB). Free memory was 243.2 MB in the beginning and 195.9 MB in the end (delta: 47.3 MB). Peak memory consumption was 66.7 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:30,305 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 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.19 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 258.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 55.42 ms. Allocated memory is still 308.8 MB. Free memory was 258.2 MB in the beginning and 257.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 354.02 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 243.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3222.95 ms. Allocated memory was 308.8 MB in the beginning and 328.2 MB in the end (delta: 19.4 MB). Free memory was 243.2 MB in the beginning and 195.9 MB in the end (delta: 47.3 MB). Peak memory consumption was 66.7 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, 3.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 25 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1199 SizeOfPredicates, 14 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 75 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/ex3_e7_590_e7_590.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_07-31-30-316.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ex3_e7_590_e7_590.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_07-31-30-316.csv Received shutdown request...