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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1091_e3_522.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:25:54,065 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:25:54,067 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:25:54,083 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:25:54,083 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:25:54,084 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:25:54,085 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:25:54,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:25:54,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:25:54,094 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:25:54,095 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:25:54,095 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:25:54,096 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:25:54,097 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:25:54,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:25:54,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:25:54,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:25:54,112 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:25:54,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:25:54,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:25:54,117 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:25:54,119 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:25:54,120 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:25:54,120 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:25:54,121 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:25:54,121 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:25:54,122 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:25:54,123 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:25:54,124 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:25:54,124 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:25:54,124 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:25:54,125 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:25:54,125 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:25:54,126 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:25:54,127 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:25:54,127 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 19:25:54,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:25:54,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:25:54,142 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:25:54,142 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:25:54,143 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:25:54,144 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:25:54,144 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:25:54,144 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:25:54,144 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:25:54,144 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:25:54,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:25:54,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:25:54,145 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:25:54,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:25:54,145 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:25:54,145 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:25:54,145 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:25:54,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:25:54,146 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:25:54,147 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:25:54,147 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:25:54,182 INFO ]: Repository-Root is: /tmp [2018-06-22 19:25:54,199 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:25:54,207 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:25:54,209 INFO ]: Initializing SmtParser... [2018-06-22 19:25:54,209 INFO ]: SmtParser initialized [2018-06-22 19:25:54,210 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1091_e3_522.smt2 [2018-06-22 19:25:54,212 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 19:25:54,301 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1091_e3_522.smt2 unknown [2018-06-22 19:25:54,726 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1091_e3_522.smt2 [2018-06-22 19:25:54,730 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:25:54,735 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:25:54,736 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:25:54,736 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:25:54,736 INFO ]: ChcToBoogie initialized [2018-06-22 19:25:54,738 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:25:54" (1/1) ... [2018-06-22 19:25:54,805 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54 Unit [2018-06-22 19:25:54,806 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:25:54,806 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:25:54,806 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:25:54,806 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:25:54,835 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (1/1) ... [2018-06-22 19:25:54,835 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (1/1) ... [2018-06-22 19:25:54,845 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (1/1) ... [2018-06-22 19:25:54,845 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (1/1) ... [2018-06-22 19:25:54,854 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (1/1) ... [2018-06-22 19:25:54,856 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (1/1) ... [2018-06-22 19:25:54,861 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (1/1) ... [2018-06-22 19:25:54,864 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:25:54,864 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:25:54,864 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:25:54,864 INFO ]: RCFGBuilder initialized [2018-06-22 19:25:54,865 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:25:54,879 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:25:54,879 INFO ]: Found specification of procedure False [2018-06-22 19:25:54,879 INFO ]: Found implementation of procedure False [2018-06-22 19:25:54,879 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:25:54,879 INFO ]: Found specification of procedure state [2018-06-22 19:25:54,879 INFO ]: Found implementation of procedure state [2018-06-22 19:25:54,879 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:25:54,879 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:25:54,879 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:25:55,268 INFO ]: Using library mode [2018-06-22 19:25:55,268 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:25:55 BoogieIcfgContainer [2018-06-22 19:25:55,268 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:25:55,270 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:25:55,270 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:25:55,278 INFO ]: TraceAbstraction initialized [2018-06-22 19:25:55,278 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:25:54" (1/3) ... [2018-06-22 19:25:55,279 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c99dfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:25:55, skipping insertion in model container [2018-06-22 19:25:55,279 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:25:54" (2/3) ... [2018-06-22 19:25:55,279 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c99dfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:25:55, skipping insertion in model container [2018-06-22 19:25:55,280 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:25:55" (3/3) ... [2018-06-22 19:25:55,282 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:25:55,292 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:25:55,302 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:25:55,346 INFO ]: Using default assertion order modulation [2018-06-22 19:25:55,347 INFO ]: Interprodecural is true [2018-06-22 19:25:55,347 INFO ]: Hoare is false [2018-06-22 19:25:55,347 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:25:55,347 INFO ]: Backedges is TWOTRACK [2018-06-22 19:25:55,347 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:25:55,347 INFO ]: Difference is false [2018-06-22 19:25:55,347 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:25:55,347 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:25:55,359 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:25:55,369 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:25:55,370 INFO ]: Found error trace [2018-06-22 19:25:55,370 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:25:55,371 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:25:55,376 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:25:55,378 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:25:55,378 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:25:55,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:55,414 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:25:55,415 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:55,536 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:25:55,719 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:25:55,721 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:25:55,721 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:25:55,722 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:25:55,737 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:25:55,737 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:25:55,740 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:25:55,860 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:25:55,861 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:25:55,862 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:25:55,863 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:25:55,864 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:25:55,872 INFO ]: With dead ends: 13 [2018-06-22 19:25:55,872 INFO ]: Without dead ends: 13 [2018-06-22 19:25:55,873 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:25:55,886 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:25:55,918 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:25:55,919 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:25:55,919 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:25:55,920 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:25:55,920 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:25:55,920 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:25:55,920 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:25:55,920 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:25:55,921 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:25:55,921 INFO ]: Found error trace [2018-06-22 19:25:55,921 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:25:55,922 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:25:55,922 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:25:55,922 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:25:55,922 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:25:55,922 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:55,923 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:25:55,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:56,015 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:25:56,331 WARN ]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:25:56,442 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:25:56,442 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:25:56,442 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) [2018-06-22 19:25:56,459 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:25:56,597 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:25:56,608 INFO ]: Computing forward predicates... [2018-06-22 19:25:56,997 WARN ]: Spent 222.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:25:57,347 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:25:57,369 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:25:57,369 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:25:57,369 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:25:57,369 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:25:57,370 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:25:57,370 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:25:57,905 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:25:57,905 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:25:57,906 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:25:57,906 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:25:57,906 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:25:57,907 INFO ]: With dead ends: 15 [2018-06-22 19:25:57,907 INFO ]: Without dead ends: 15 [2018-06-22 19:25:57,907 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:25:57,908 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:25:57,911 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:25:57,911 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:25:57,912 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:25:57,912 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:25:57,912 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:25:57,912 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:25:57,912 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:25:57,912 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:25:57,913 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:25:57,913 INFO ]: Found error trace [2018-06-22 19:25:57,913 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:25:57,913 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:25:57,913 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:25:57,913 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:25:57,913 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:25:57,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:57,914 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:25:57,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:58,022 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:25:58,425 INFO ]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:25:58,425 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:25:58,425 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 19:25:58,434 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:25:58,557 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:25:58,557 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:25:58,563 INFO ]: Computing forward predicates... [2018-06-22 19:25:58,944 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:25:58,972 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:25:58,972 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:25:58,973 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:25:58,973 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:25:58,973 INFO ]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:25:58,973 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:25:59,156 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:25:59,156 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 19:25:59,156 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:25:59,156 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:25:59,157 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:25:59,157 INFO ]: With dead ends: 11 [2018-06-22 19:25:59,157 INFO ]: Without dead ends: 0 [2018-06-22 19:25:59,157 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-06-22 19:25:59,157 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:25:59,157 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:25:59,157 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:25:59,157 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:25:59,157 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 19:25:59,157 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:25:59,157 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:25:59,157 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:25:59,157 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:25:59,158 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:25:59,162 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:25:59 BoogieIcfgContainer [2018-06-22 19:25:59,162 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:25:59,162 INFO ]: Toolchain (without parser) took 4431.49 ms. Allocated memory was 309.3 MB in the beginning and 350.2 MB in the end (delta: 40.9 MB). Free memory was 250.8 MB in the beginning and 307.1 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:25:59,163 INFO ]: SmtParser took 0.08 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. [2018-06-22 19:25:59,164 INFO ]: ChcToBoogie took 70.37 ms. Allocated memory is still 309.3 MB. Free memory was 250.8 MB in the beginning and 248.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:59,164 INFO ]: Boogie Preprocessor took 57.52 ms. Allocated memory is still 309.3 MB. Free memory was 248.8 MB in the beginning and 246.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:59,165 INFO ]: RCFGBuilder took 404.16 ms. Allocated memory is still 309.3 MB. Free memory was 246.7 MB in the beginning and 222.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:59,165 INFO ]: TraceAbstraction took 3891.47 ms. Allocated memory was 309.3 MB in the beginning and 350.2 MB in the end (delta: 40.9 MB). Free memory was 222.7 MB in the beginning and 307.7 MB in the end (delta: -85.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:25:59,168 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 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 70.37 ms. Allocated memory is still 309.3 MB. Free memory was 250.8 MB in the beginning and 248.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.52 ms. Allocated memory is still 309.3 MB. Free memory was 248.8 MB in the beginning and 246.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 404.16 ms. Allocated memory is still 309.3 MB. Free memory was 246.7 MB in the beginning and 222.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3891.47 ms. Allocated memory was 309.3 MB in the beginning and 350.2 MB in the end (delta: 40.9 MB). Free memory was 222.7 MB in the beginning and 307.7 MB in the end (delta: -85.0 MB). There was no memory consumed. 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 3.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 12 SDslu, 68 SDs, 0 SdLazy, 56 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 2744 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1057 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 10/26 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/metros_4_e3_1091_e3_522.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-25-59-178.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e3_1091_e3_522.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-25-59-178.csv Received shutdown request...