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_1_e1_846_e7_397.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:02:50,003 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:02:50,005 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:02:50,025 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:02:50,025 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:02:50,026 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:02:50,027 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:02:50,029 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:02:50,030 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:02:50,031 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:02:50,032 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:02:50,032 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:02:50,033 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:02:50,036 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:02:50,037 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:02:50,038 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:02:50,039 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:02:50,041 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:02:50,043 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:02:50,052 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:02:50,053 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:02:50,061 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:02:50,061 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:02:50,061 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:02:50,062 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:02:50,063 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:02:50,064 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:02:50,064 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:02:50,065 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:02:50,065 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:02:50,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:02:50,067 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:02:50,067 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:02:50,068 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:02:50,068 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:02:50,069 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 19:02:50,093 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:02:50,094 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:02:50,095 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:02:50,096 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:02:50,097 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:02:50,097 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:02:50,097 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:02:50,097 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:02:50,097 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:02:50,098 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:02:50,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:02:50,098 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:02:50,098 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:02:50,098 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:02:50,098 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:02:50,103 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:02:50,103 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:02:50,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:02:50,103 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:02:50,105 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:02:50,105 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:02:50,164 INFO ]: Repository-Root is: /tmp [2018-06-22 19:02:50,181 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:02:50,187 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:02:50,188 INFO ]: Initializing SmtParser... [2018-06-22 19:02:50,189 INFO ]: SmtParser initialized [2018-06-22 19:02:50,190 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e7_397.smt2 [2018-06-22 19:02:50,191 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 19:02:50,286 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e7_397.smt2 unknown [2018-06-22 19:02:50,781 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e7_397.smt2 [2018-06-22 19:02:50,785 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:02:50,793 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:02:50,793 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:02:50,793 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:02:50,794 INFO ]: ChcToBoogie initialized [2018-06-22 19:02:50,797 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:02:50" (1/1) ... [2018-06-22 19:02:50,851 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50 Unit [2018-06-22 19:02:50,852 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:02:50,853 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:02:50,853 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:02:50,853 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:02:50,869 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (1/1) ... [2018-06-22 19:02:50,869 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (1/1) ... [2018-06-22 19:02:50,878 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (1/1) ... [2018-06-22 19:02:50,878 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (1/1) ... [2018-06-22 19:02:50,885 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (1/1) ... [2018-06-22 19:02:50,887 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (1/1) ... [2018-06-22 19:02:50,889 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (1/1) ... [2018-06-22 19:02:50,896 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:02:50,897 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:02:50,897 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:02:50,897 INFO ]: RCFGBuilder initialized [2018-06-22 19:02:50,898 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 19:02:50,915 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:02:50,916 INFO ]: Found specification of procedure False [2018-06-22 19:02:50,916 INFO ]: Found implementation of procedure False [2018-06-22 19:02:50,916 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:02:50,916 INFO ]: Found specification of procedure state [2018-06-22 19:02:50,916 INFO ]: Found implementation of procedure state [2018-06-22 19:02:50,916 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:02:50,916 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:02:50,916 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 19:02:51,392 INFO ]: Using library mode [2018-06-22 19:02:51,393 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:02:51 BoogieIcfgContainer [2018-06-22 19:02:51,393 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:02:51,394 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:02:51,394 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:02:51,400 INFO ]: TraceAbstraction initialized [2018-06-22 19:02:51,400 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:02:50" (1/3) ... [2018-06-22 19:02:51,401 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c0aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:02:51, skipping insertion in model container [2018-06-22 19:02:51,401 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:02:50" (2/3) ... [2018-06-22 19:02:51,401 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c0aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:02:51, skipping insertion in model container [2018-06-22 19:02:51,402 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:02:51" (3/3) ... [2018-06-22 19:02:51,404 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:02:51,413 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:02:51,423 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:02:51,463 INFO ]: Using default assertion order modulation [2018-06-22 19:02:51,463 INFO ]: Interprodecural is true [2018-06-22 19:02:51,463 INFO ]: Hoare is false [2018-06-22 19:02:51,463 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:02:51,463 INFO ]: Backedges is TWOTRACK [2018-06-22 19:02:51,463 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:02:51,463 INFO ]: Difference is false [2018-06-22 19:02:51,463 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:02:51,463 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:02:51,477 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:02:51,495 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:02:51,495 INFO ]: Found error trace [2018-06-22 19:02:51,496 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:02:51,497 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:02:51,502 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:02:51,504 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:02:51,504 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:02:51,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:51,541 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:02:51,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:51,656 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:02:51,822 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:02:51,823 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:02:51,824 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:02:51,825 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:02:51,838 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:02:51,838 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:02:51,840 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:02:51,969 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:02:51,970 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:02:51,970 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:02:51,971 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:02:51,972 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:02:51,983 INFO ]: With dead ends: 13 [2018-06-22 19:02:51,983 INFO ]: Without dead ends: 13 [2018-06-22 19:02:51,985 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 19:02:52,003 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:02:52,031 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:02:52,032 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:02:52,034 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:02:52,035 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:02:52,035 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:02:52,035 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:02:52,035 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:02:52,035 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:02:52,036 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:02:52,036 INFO ]: Found error trace [2018-06-22 19:02:52,036 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:02:52,036 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:02:52,037 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:02:52,037 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:02:52,037 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:02:52,037 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:52,037 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:02:52,037 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:52,123 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:02:52,469 WARN ]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 19:02:52,505 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:02:52,505 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:02:52,505 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 19:02:52,515 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:02:52,645 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:02:52,655 INFO ]: Computing forward predicates... [2018-06-22 19:02:53,100 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:02:53,139 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:02:53,139 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:02:53,139 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:02:53,141 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:02:53,141 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:02:53,141 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:02:53,425 WARN ]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2018-06-22 19:02:53,815 WARN ]: Spent 301.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-06-22 19:02:53,956 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:02:53,956 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:02:54,004 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:02:54,004 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:02:54,005 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:02:54,005 INFO ]: With dead ends: 15 [2018-06-22 19:02:54,005 INFO ]: Without dead ends: 15 [2018-06-22 19:02:54,006 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:02:54,006 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:02:54,010 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:02:54,010 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:02:54,011 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:02:54,011 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:02:54,011 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:02:54,011 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:02:54,011 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:02:54,011 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:02:54,012 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:02:54,012 INFO ]: Found error trace [2018-06-22 19:02:54,012 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:02:54,012 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:02:54,012 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:02:54,012 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:02:54,012 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:02:54,015 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:54,015 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:02:54,015 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:54,116 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:02:54,406 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:02:54,406 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:02:54,406 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 19:02:54,415 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:02:54,553 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:02:54,553 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:02:54,559 INFO ]: Computing forward predicates... [2018-06-22 19:02:54,957 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:02:54,979 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:02:54,979 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:02:54,980 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:02:54,980 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:02:54,980 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:02:54,980 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:02:55,322 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:02:55,322 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:02:55,323 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:02:55,323 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:02:55,323 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:02:55,324 INFO ]: With dead ends: 17 [2018-06-22 19:02:55,324 INFO ]: Without dead ends: 17 [2018-06-22 19:02:55,324 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:02:55,324 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:02:55,327 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:02:55,327 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:02:55,328 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:02:55,328 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:02:55,328 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:02:55,328 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:02:55,328 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:02:55,328 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:02:55,328 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:02:55,329 INFO ]: Found error trace [2018-06-22 19:02:55,329 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:02:55,329 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:02:55,329 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:02:55,329 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:02:55,329 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:02:55,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:55,330 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:02:55,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:55,438 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:02:55,863 WARN ]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 19:02:56,211 WARN ]: Spent 330.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-06-22 19:02:56,455 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:02:56,455 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:02:56,455 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 19:02:56,471 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:02:56,644 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:02:56,644 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:02:56,651 INFO ]: Computing forward predicates... [2018-06-22 19:02:56,893 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 19:02:57,870 WARN ]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 30 [2018-06-22 19:02:58,099 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:02:58,124 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:02:58,124 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:02:58,124 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:02:58,124 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:02:58,125 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:02:58,125 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:02:58,600 WARN ]: Spent 359.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 126 [2018-06-22 19:02:58,808 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2018-06-22 19:02:59,099 WARN ]: Spent 222.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-06-22 19:02:59,592 WARN ]: Spent 434.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2018-06-22 19:02:59,646 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:02:59,646 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:02:59,647 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:02:59,647 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:02:59,648 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:02:59,648 INFO ]: With dead ends: 19 [2018-06-22 19:02:59,648 INFO ]: Without dead ends: 19 [2018-06-22 19:02:59,649 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:02:59,649 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:02:59,652 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:02:59,652 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:02:59,652 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:02:59,652 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:02:59,653 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:02:59,653 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:02:59,653 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:02:59,653 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:02:59,653 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:02:59,653 INFO ]: Found error trace [2018-06-22 19:02:59,654 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:02:59,654 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:02:59,654 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:02:59,654 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:02:59,654 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:02:59,655 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:59,655 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:02:59,655 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:02:59,775 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:00,274 WARN ]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 19:03:00,818 WARN ]: Spent 463.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2018-06-22 19:03:01,029 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-06-22 19:03:01,136 INFO ]: Checked inductivity of 36 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 19:03:01,136 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:03:01,137 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 19:03:01,150 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:03:01,301 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:03:01,301 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:03:01,310 INFO ]: Computing forward predicates... [2018-06-22 19:03:02,348 WARN ]: Spent 753.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2018-06-22 19:03:03,217 WARN ]: Spent 753.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2018-06-22 19:03:03,401 WARN ]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-06-22 19:03:05,983 WARN ]: Spent 1.88 s on a formula simplification. DAG size of input: 253 DAG size of output: 52 [2018-06-22 19:03:06,220 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:03:06,252 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:03:06,252 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2018-06-22 19:03:06,252 INFO ]: Interpolant automaton has 18 states [2018-06-22 19:03:06,252 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 19:03:06,253 INFO ]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2018-06-22 19:03:06,253 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 18 states. [2018-06-22 19:03:07,470 WARN ]: Spent 1.14 s on a formula simplification. DAG size of input: 185 DAG size of output: 142 [2018-06-22 19:03:07,767 WARN ]: Spent 267.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2018-06-22 19:03:08,855 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 251 DAG size of output: 149 [2018-06-22 19:03:10,731 WARN ]: Spent 1.74 s on a formula simplification. DAG size of input: 238 DAG size of output: 177 [2018-06-22 19:03:12,085 WARN ]: Spent 1.27 s on a formula simplification. DAG size of input: 201 DAG size of output: 156 [2018-06-22 19:03:13,656 WARN ]: Spent 1.50 s on a formula simplification. DAG size of input: 201 DAG size of output: 157 [2018-06-22 19:03:13,697 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:03:13,698 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:03:13,698 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:03:13,698 INFO ]: Start accepts. Automaton has 18 states. Word has length 25 [2018-06-22 19:03:13,698 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:03:13,698 INFO ]: With dead ends: 15 [2018-06-22 19:03:13,698 INFO ]: Without dead ends: 0 [2018-06-22 19:03:13,699 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2018-06-22 19:03:13,699 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:03:13,699 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:03:13,699 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:03:13,699 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:03:13,699 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 19:03:13,699 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:03:13,699 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:03:13,699 INFO ]: Interpolant automaton has 18 states. [2018-06-22 19:03:13,699 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:03:13,699 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:03:13,703 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:03:13 BoogieIcfgContainer [2018-06-22 19:03:13,703 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:03:13,704 INFO ]: Toolchain (without parser) took 22918.65 ms. Allocated memory was 304.1 MB in the beginning and 673.2 MB in the end (delta: 369.1 MB). Free memory was 244.5 MB in the beginning and 514.1 MB in the end (delta: -269.6 MB). Peak memory consumption was 99.5 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:13,705 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:03:13,705 INFO ]: ChcToBoogie took 59.10 ms. Allocated memory is still 304.1 MB. Free memory was 244.5 MB in the beginning and 242.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:13,706 INFO ]: Boogie Preprocessor took 43.58 ms. Allocated memory is still 304.1 MB. Free memory was 242.5 MB in the beginning and 240.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:13,706 INFO ]: RCFGBuilder took 495.59 ms. Allocated memory is still 304.1 MB. Free memory was 240.5 MB in the beginning and 214.4 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:13,707 INFO ]: TraceAbstraction took 22309.02 ms. Allocated memory was 304.1 MB in the beginning and 673.2 MB in the end (delta: 369.1 MB). Free memory was 214.4 MB in the beginning and 514.1 MB in the end (delta: -299.7 MB). Peak memory consumption was 69.4 MB. Max. memory is 3.6 GB. [2018-06-22 19:03:13,709 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.10 ms. Allocated memory is still 304.1 MB. Free memory was 244.5 MB in the beginning and 242.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.58 ms. Allocated memory is still 304.1 MB. Free memory was 242.5 MB in the beginning and 240.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 495.59 ms. Allocated memory is still 304.1 MB. Free memory was 240.5 MB in the beginning and 214.4 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 22309.02 ms. Allocated memory was 304.1 MB in the beginning and 673.2 MB in the end (delta: 369.1 MB). Free memory was 214.4 MB in the beginning and 514.1 MB in the end (delta: -299.7 MB). Peak memory consumption was 69.4 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 22.2s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 10.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 73 SDslu, 200 SDs, 0 SdLazy, 173 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 16.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 81528 SizeOfPredicates, 104 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 54/140 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_1_e1_846_e7_397.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-03-13-720.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e1_846_e7_397.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-03-13-720.csv Received shutdown request...