java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/recursive.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:33:15,998 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:33:16,000 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:33:16,012 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:33:16,013 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:33:16,014 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:33:16,017 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:33:16,018 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:33:16,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:33:16,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:33:16,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:33:16,023 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:33:16,023 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:33:16,024 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:33:16,027 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:33:16,028 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:33:16,030 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:33:16,037 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:33:16,039 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:33:16,040 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:33:16,041 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:33:16,043 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:33:16,043 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:33:16,043 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:33:16,044 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:33:16,044 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:33:16,045 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:33:16,046 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:33:16,047 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:33:16,047 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:33:16,047 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:33:16,048 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:33:16,048 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:33:16,049 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:33:16,050 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:33:16,050 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:33:16,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:33:16,071 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:33:16,071 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:33:16,072 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:33:16,073 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:33:16,073 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:33:16,073 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:33:16,073 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:33:16,074 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:33:16,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:33:16,077 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:33:16,077 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:33:16,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:33:16,077 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:33:16,078 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:33:16,078 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:33:16,078 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:33:16,078 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:33:16,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:33:16,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:33:16,079 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:33:16,080 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:33:16,080 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:33:16,129 INFO ]: Repository-Root is: /tmp [2018-06-25 09:33:16,150 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:33:16,157 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:33:16,158 INFO ]: Initializing SmtParser... [2018-06-25 09:33:16,158 INFO ]: SmtParser initialized [2018-06-25 09:33:16,159 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/recursive.smt2 [2018-06-25 09:33:16,160 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-25 09:33:16,253 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/recursive.smt2 unknown [2018-06-25 09:33:16,447 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/recursive.smt2 [2018-06-25 09:33:16,453 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:33:16,461 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:33:16,461 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:33:16,461 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:33:16,462 INFO ]: ChcToBoogie initialized [2018-06-25 09:33:16,465 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:33:16" (1/1) ... [2018-06-25 09:33:16,511 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16 Unit [2018-06-25 09:33:16,511 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:33:16,511 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:33:16,511 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:33:16,511 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:33:16,531 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (1/1) ... [2018-06-25 09:33:16,532 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (1/1) ... [2018-06-25 09:33:16,537 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (1/1) ... [2018-06-25 09:33:16,537 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (1/1) ... [2018-06-25 09:33:16,540 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (1/1) ... [2018-06-25 09:33:16,543 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (1/1) ... [2018-06-25 09:33:16,544 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (1/1) ... [2018-06-25 09:33:16,546 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:33:16,546 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:33:16,546 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:33:16,546 INFO ]: RCFGBuilder initialized [2018-06-25 09:33:16,547 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-25 09:33:16,565 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:33:16,565 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:33:16,565 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:33:16,565 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:33:16,565 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:33:16,565 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:33:16,822 INFO ]: Using library mode [2018-06-25 09:33:16,823 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:33:16 BoogieIcfgContainer [2018-06-25 09:33:16,823 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:33:16,823 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:33:16,823 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:33:16,826 INFO ]: TraceAbstraction initialized [2018-06-25 09:33:16,827 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:33:16" (1/3) ... [2018-06-25 09:33:16,828 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4146ab33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:33:16, skipping insertion in model container [2018-06-25 09:33:16,828 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:16" (2/3) ... [2018-06-25 09:33:16,828 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4146ab33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:33:16, skipping insertion in model container [2018-06-25 09:33:16,828 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:33:16" (3/3) ... [2018-06-25 09:33:16,830 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:33:16,841 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:33:16,851 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:33:16,901 INFO ]: Using default assertion order modulation [2018-06-25 09:33:16,902 INFO ]: Interprodecural is true [2018-06-25 09:33:16,902 INFO ]: Hoare is false [2018-06-25 09:33:16,902 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:33:16,902 INFO ]: Backedges is TWOTRACK [2018-06-25 09:33:16,902 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:33:16,902 INFO ]: Difference is false [2018-06-25 09:33:16,902 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:33:16,902 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:33:16,920 INFO ]: Start isEmpty. Operand 17 states. [2018-06-25 09:33:16,937 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:33:16,937 INFO ]: Found error trace [2018-06-25 09:33:16,938 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:16,938 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:16,943 INFO ]: Analyzing trace with hash 1113126678, now seen corresponding path program 1 times [2018-06-25 09:33:16,947 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:16,947 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:16,990 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:16,990 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:16,990 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:17,021 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:17,048 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:17,050 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:33:17,050 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:33:17,051 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:33:17,061 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:33:17,062 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:33:17,064 INFO ]: Start difference. First operand 17 states. Second operand 2 states. [2018-06-25 09:33:17,088 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:17,088 INFO ]: Finished difference Result 15 states and 19 transitions. [2018-06-25 09:33:17,088 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:33:17,089 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-25 09:33:17,090 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:17,102 INFO ]: With dead ends: 15 [2018-06-25 09:33:17,103 INFO ]: Without dead ends: 15 [2018-06-25 09:33:17,104 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:33:17,118 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 09:33:17,139 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 09:33:17,141 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 09:33:17,142 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-06-25 09:33:17,143 INFO ]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 7 [2018-06-25 09:33:17,143 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:17,143 INFO ]: Abstraction has 15 states and 19 transitions. [2018-06-25 09:33:17,143 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:33:17,143 INFO ]: Start isEmpty. Operand 15 states and 19 transitions. [2018-06-25 09:33:17,145 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 09:33:17,145 INFO ]: Found error trace [2018-06-25 09:33:17,145 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:17,145 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:17,145 INFO ]: Analyzing trace with hash -1252563095, now seen corresponding path program 1 times [2018-06-25 09:33:17,145 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:17,145 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:17,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:17,146 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:17,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:17,155 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:17,211 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:17,212 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:33:17,212 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:33:17,213 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:33:17,213 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:33:17,213 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:33:17,213 INFO ]: Start difference. First operand 15 states and 19 transitions. Second operand 4 states. [2018-06-25 09:33:17,368 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:17,368 INFO ]: Finished difference Result 27 states and 35 transitions. [2018-06-25 09:33:17,368 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:33:17,368 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-25 09:33:17,368 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:17,369 INFO ]: With dead ends: 27 [2018-06-25 09:33:17,369 INFO ]: Without dead ends: 27 [2018-06-25 09:33:17,370 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:33:17,370 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-25 09:33:17,375 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-25 09:33:17,375 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-25 09:33:17,376 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2018-06-25 09:33:17,376 INFO ]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 9 [2018-06-25 09:33:17,377 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:17,377 INFO ]: Abstraction has 27 states and 35 transitions. [2018-06-25 09:33:17,377 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:33:17,377 INFO ]: Start isEmpty. Operand 27 states and 35 transitions. [2018-06-25 09:33:17,378 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 09:33:17,378 INFO ]: Found error trace [2018-06-25 09:33:17,378 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:17,378 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:17,378 INFO ]: Analyzing trace with hash 274888865, now seen corresponding path program 1 times [2018-06-25 09:33:17,378 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:17,378 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:17,379 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:17,379 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:17,379 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:17,390 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:17,475 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:17,475 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:33:17,475 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-25 09:33:17,475 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:33:17,475 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:33:17,475 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:33:17,475 INFO ]: Start difference. First operand 27 states and 35 transitions. Second operand 5 states. [2018-06-25 09:33:17,714 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:17,714 INFO ]: Finished difference Result 44 states and 65 transitions. [2018-06-25 09:33:17,716 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:33:17,716 INFO ]: Start accepts. Automaton has 5 states. Word has length 10 [2018-06-25 09:33:17,716 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:17,720 INFO ]: With dead ends: 44 [2018-06-25 09:33:17,720 INFO ]: Without dead ends: 42 [2018-06-25 09:33:17,721 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-25 09:33:17,721 INFO ]: Start minimizeSevpa. Operand 42 states. [2018-06-25 09:33:17,732 INFO ]: Finished minimizeSevpa. Reduced states from 42 to 30. [2018-06-25 09:33:17,732 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-25 09:33:17,733 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2018-06-25 09:33:17,733 INFO ]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 10 [2018-06-25 09:33:17,733 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:17,734 INFO ]: Abstraction has 30 states and 39 transitions. [2018-06-25 09:33:17,734 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:33:17,734 INFO ]: Start isEmpty. Operand 30 states and 39 transitions. [2018-06-25 09:33:17,735 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-25 09:33:17,735 INFO ]: Found error trace [2018-06-25 09:33:17,739 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:17,739 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:17,739 INFO ]: Analyzing trace with hash 1850039206, now seen corresponding path program 1 times [2018-06-25 09:33:17,739 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:17,739 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:17,740 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:17,740 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:17,740 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:17,767 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:18,235 INFO ]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:33:18,235 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:18,236 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) [2018-06-25 09:33:18,253 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:33:18,298 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:18,307 INFO ]: Computing forward predicates... [2018-06-25 09:33:18,499 INFO ]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:33:18,520 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:18,520 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-25 09:33:18,520 INFO ]: Interpolant automaton has 11 states [2018-06-25 09:33:18,520 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-25 09:33:18,520 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-25 09:33:18,521 INFO ]: Start difference. First operand 30 states and 39 transitions. Second operand 11 states. [2018-06-25 09:33:19,348 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:19,348 INFO ]: Finished difference Result 51 states and 84 transitions. [2018-06-25 09:33:19,349 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-25 09:33:19,349 INFO ]: Start accepts. Automaton has 11 states. Word has length 19 [2018-06-25 09:33:19,349 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:19,351 INFO ]: With dead ends: 51 [2018-06-25 09:33:19,351 INFO ]: Without dead ends: 51 [2018-06-25 09:33:19,352 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-06-25 09:33:19,352 INFO ]: Start minimizeSevpa. Operand 51 states. [2018-06-25 09:33:19,361 INFO ]: Finished minimizeSevpa. Reduced states from 51 to 39. [2018-06-25 09:33:19,361 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-25 09:33:19,362 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2018-06-25 09:33:19,362 INFO ]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 19 [2018-06-25 09:33:19,362 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:19,362 INFO ]: Abstraction has 39 states and 57 transitions. [2018-06-25 09:33:19,362 INFO ]: Interpolant automaton has 11 states. [2018-06-25 09:33:19,363 INFO ]: Start isEmpty. Operand 39 states and 57 transitions. [2018-06-25 09:33:19,365 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-25 09:33:19,365 INFO ]: Found error trace [2018-06-25 09:33:19,365 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:19,365 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:19,365 INFO ]: Analyzing trace with hash -289695084, now seen corresponding path program 1 times [2018-06-25 09:33:19,365 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:19,365 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:19,366 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:19,366 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:19,366 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:19,376 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:19,485 INFO ]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:33:19,485 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:19,485 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:33:19,491 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:19,504 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:19,507 INFO ]: Computing forward predicates... [2018-06-25 09:33:19,744 INFO ]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:33:19,764 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:19,764 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-25 09:33:19,764 INFO ]: Interpolant automaton has 13 states [2018-06-25 09:33:19,764 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 09:33:19,764 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-25 09:33:19,764 INFO ]: Start difference. First operand 39 states and 57 transitions. Second operand 13 states. [2018-06-25 09:33:20,436 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:20,436 INFO ]: Finished difference Result 55 states and 92 transitions. [2018-06-25 09:33:20,436 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-25 09:33:20,436 INFO ]: Start accepts. Automaton has 13 states. Word has length 20 [2018-06-25 09:33:20,437 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:20,438 INFO ]: With dead ends: 55 [2018-06-25 09:33:20,438 INFO ]: Without dead ends: 55 [2018-06-25 09:33:20,439 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2018-06-25 09:33:20,439 INFO ]: Start minimizeSevpa. Operand 55 states. [2018-06-25 09:33:20,449 INFO ]: Finished minimizeSevpa. Reduced states from 55 to 41. [2018-06-25 09:33:20,449 INFO ]: Start removeUnreachable. Operand 41 states. [2018-06-25 09:33:20,450 INFO ]: Finished removeUnreachable. Reduced from 41 states to 41 states and 61 transitions. [2018-06-25 09:33:20,450 INFO ]: Start accepts. Automaton has 41 states and 61 transitions. Word has length 20 [2018-06-25 09:33:20,450 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:20,450 INFO ]: Abstraction has 41 states and 61 transitions. [2018-06-25 09:33:20,450 INFO ]: Interpolant automaton has 13 states. [2018-06-25 09:33:20,450 INFO ]: Start isEmpty. Operand 41 states and 61 transitions. [2018-06-25 09:33:20,453 INFO ]: Finished isEmpty. Found accepting run of length 29 [2018-06-25 09:33:20,453 INFO ]: Found error trace [2018-06-25 09:33:20,453 INFO ]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:20,453 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:20,454 INFO ]: Analyzing trace with hash 106420303, now seen corresponding path program 2 times [2018-06-25 09:33:20,454 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:20,454 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:20,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:20,454 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:20,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:20,469 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:20,555 INFO ]: Checked inductivity of 23 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-25 09:33:20,555 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:20,556 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:33:20,570 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 09:33:20,600 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:33:20,600 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:20,603 INFO ]: Computing forward predicates... [2018-06-25 09:33:20,682 INFO ]: Checked inductivity of 23 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-25 09:33:20,708 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:20,708 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-06-25 09:33:20,709 INFO ]: Interpolant automaton has 13 states [2018-06-25 09:33:20,709 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 09:33:20,709 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-25 09:33:20,709 INFO ]: Start difference. First operand 41 states and 61 transitions. Second operand 13 states. [2018-06-25 09:33:20,973 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:20,973 INFO ]: Finished difference Result 61 states and 111 transitions. [2018-06-25 09:33:20,974 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-25 09:33:20,974 INFO ]: Start accepts. Automaton has 13 states. Word has length 28 [2018-06-25 09:33:20,974 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:20,975 INFO ]: With dead ends: 61 [2018-06-25 09:33:20,975 INFO ]: Without dead ends: 61 [2018-06-25 09:33:20,976 INFO ]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-06-25 09:33:20,976 INFO ]: Start minimizeSevpa. Operand 61 states. [2018-06-25 09:33:20,989 INFO ]: Finished minimizeSevpa. Reduced states from 61 to 48. [2018-06-25 09:33:20,989 INFO ]: Start removeUnreachable. Operand 48 states. [2018-06-25 09:33:20,990 INFO ]: Finished removeUnreachable. Reduced from 48 states to 48 states and 78 transitions. [2018-06-25 09:33:20,990 INFO ]: Start accepts. Automaton has 48 states and 78 transitions. Word has length 28 [2018-06-25 09:33:20,991 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:20,991 INFO ]: Abstraction has 48 states and 78 transitions. [2018-06-25 09:33:20,991 INFO ]: Interpolant automaton has 13 states. [2018-06-25 09:33:20,991 INFO ]: Start isEmpty. Operand 48 states and 78 transitions. [2018-06-25 09:33:20,994 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-25 09:33:20,994 INFO ]: Found error trace [2018-06-25 09:33:20,994 INFO ]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:20,994 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:20,995 INFO ]: Analyzing trace with hash 1975694037, now seen corresponding path program 1 times [2018-06-25 09:33:20,995 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:20,995 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:20,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:20,995 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:33:20,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:21,003 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:21,187 INFO ]: Checked inductivity of 24 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-25 09:33:21,187 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:21,187 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:33:21,194 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:21,209 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:21,212 INFO ]: Computing forward predicates... [2018-06-25 09:33:21,279 INFO ]: Checked inductivity of 24 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-25 09:33:21,298 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:21,298 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2018-06-25 09:33:21,299 INFO ]: Interpolant automaton has 12 states [2018-06-25 09:33:21,299 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 09:33:21,299 INFO ]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-06-25 09:33:21,299 INFO ]: Start difference. First operand 48 states and 78 transitions. Second operand 12 states. [2018-06-25 09:33:21,627 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:21,627 INFO ]: Finished difference Result 36 states and 52 transitions. [2018-06-25 09:33:21,627 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-25 09:33:21,627 INFO ]: Start accepts. Automaton has 12 states. Word has length 29 [2018-06-25 09:33:21,628 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:21,628 INFO ]: With dead ends: 36 [2018-06-25 09:33:21,628 INFO ]: Without dead ends: 0 [2018-06-25 09:33:21,628 INFO ]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2018-06-25 09:33:21,628 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:33:21,628 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:33:21,628 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:33:21,628 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:33:21,628 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-25 09:33:21,628 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:21,628 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:33:21,628 INFO ]: Interpolant automaton has 12 states. [2018-06-25 09:33:21,629 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:33:21,629 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:33:21,634 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:33:21 BoogieIcfgContainer [2018-06-25 09:33:21,634 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:33:21,635 INFO ]: Toolchain (without parser) took 5181.16 ms. Allocated memory was 305.1 MB in the beginning and 338.7 MB in the end (delta: 33.6 MB). Free memory was 261.5 MB in the beginning and 190.2 MB in the end (delta: 71.3 MB). Peak memory consumption was 104.8 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:21,637 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:33:21,637 INFO ]: ChcToBoogie took 49.53 ms. Allocated memory is still 305.1 MB. Free memory was 261.5 MB in the beginning and 259.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:21,638 INFO ]: Boogie Preprocessor took 34.57 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:21,639 INFO ]: RCFGBuilder took 276.35 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 250.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:21,640 INFO ]: TraceAbstraction took 4810.81 ms. Allocated memory was 305.1 MB in the beginning and 338.7 MB in the end (delta: 33.6 MB). Free memory was 249.4 MB in the beginning and 190.2 MB in the end (delta: 59.2 MB). Peak memory consumption was 92.7 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:21,649 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 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.53 ms. Allocated memory is still 305.1 MB. Free memory was 261.5 MB in the beginning and 259.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.57 ms. Allocated memory is still 305.1 MB. Free memory was 259.5 MB in the beginning and 257.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 276.35 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 250.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4810.81 ms. Allocated memory was 305.1 MB in the beginning and 338.7 MB in the end (delta: 33.6 MB). Free memory was 249.4 MB in the beginning and 190.2 MB in the end (delta: 59.2 MB). Peak memory consumption was 92.7 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, 17 locations, 1 error locations. SAFE Result, 4.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 180 SDtfs, 227 SDslu, 610 SDs, 0 SdLazy, 837 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=6, 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, 7 MinimizatonAttempts, 51 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 11250 SizeOfPredicates, 36 NumberOfNonLiveVariables, 358 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 101/126 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/recursive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-33-21-662.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/recursive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-33-21-662.csv Received shutdown request...