java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.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/ack.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:15:06,979 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:15:06,981 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:15:06,993 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:15:06,993 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:15:06,994 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:15:06,996 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:15:06,998 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:15:07,000 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:15:07,000 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:15:07,001 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:15:07,001 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:15:07,002 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:15:07,003 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:15:07,004 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:15:07,005 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:15:07,006 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:15:07,008 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:15:07,010 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:15:07,012 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:15:07,013 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:15:07,014 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:15:07,017 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:15:07,017 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:15:07,017 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:15:07,018 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:15:07,019 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:15:07,020 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:15:07,021 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:15:07,022 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:15:07,022 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:15:07,023 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:15:07,023 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:15:07,023 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:15:07,024 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:15:07,025 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:15:07,025 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:15:07,040 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:15:07,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:15:07,041 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:15:07,041 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:15:07,042 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:15:07,042 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:15:07,043 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:15:07,043 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:15:07,043 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:15:07,043 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:15:07,043 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:15:07,044 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:15:07,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:15:07,044 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:15:07,044 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:15:07,044 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:15:07,045 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:15:07,045 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:15:07,045 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:15:07,045 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:15:07,045 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:15:07,051 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:15:07,051 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:15:07,106 INFO ]: Repository-Root is: /tmp [2018-06-26 18:15:07,119 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:15:07,123 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:15:07,124 INFO ]: Initializing SmtParser... [2018-06-26 18:15:07,124 INFO ]: SmtParser initialized [2018-06-26 18:15:07,125 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/ack.smt2 [2018-06-26 18:15:07,126 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 [2018-06-26 18:15:07,224 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/ack.smt2 unknown [2018-06-26 18:15:07,447 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/ack.smt2 [2018-06-26 18:15:07,454 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:15:07,463 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:15:07,463 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:15:07,463 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:15:07,463 INFO ]: ChcToBoogie initialized [2018-06-26 18:15:07,466 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,513 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07 Unit [2018-06-26 18:15:07,513 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:15:07,514 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:15:07,514 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:15:07,514 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:15:07,533 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,534 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,540 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,540 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,544 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,546 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,548 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,550 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:15:07,551 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:15:07,551 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:15:07,551 INFO ]: RCFGBuilder initialized [2018-06-26 18:15:07,551 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (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) [2018-06-26 18:15:07,574 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:15:07,574 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:15:07,574 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:15:07,574 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:15:07,574 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:15:07,574 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 [2018-06-26 18:15:07,843 INFO ]: Using library mode [2018-06-26 18:15:07,844 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:07 BoogieIcfgContainer [2018-06-26 18:15:07,844 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:15:07,844 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:15:07,844 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:15:07,848 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:15:07,848 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:07" (1/1) ... [2018-06-26 18:15:07,862 INFO ]: Initial Icfg 13 locations, 17 edges [2018-06-26 18:15:07,863 INFO ]: Using Remove infeasible edges [2018-06-26 18:15:07,864 INFO ]: Using Maximize final states [2018-06-26 18:15:07,864 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:15:07,864 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:15:07,868 INFO ]: Using Remove sink states [2018-06-26 18:15:07,869 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:15:07,869 INFO ]: Using Use SBE [2018-06-26 18:15:07,885 INFO ]: SBE split 0 edges [2018-06-26 18:15:07,891 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:15:07,893 INFO ]: 0 new accepting states [2018-06-26 18:15:07,927 INFO ]: Removed 7 edges and 3 locations by large block encoding [2018-06-26 18:15:07,929 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:15:07,930 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:15:07,930 INFO ]: 0 new accepting states [2018-06-26 18:15:07,930 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:15:07,931 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:15:07,931 INFO ]: Encoded RCFG 8 locations, 11 edges [2018-06-26 18:15:07,931 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:15:07 BasicIcfg [2018-06-26 18:15:07,931 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:15:07,932 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:15:07,932 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:15:07,935 INFO ]: TraceAbstraction initialized [2018-06-26 18:15:07,935 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:15:07" (1/4) ... [2018-06-26 18:15:07,936 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dc57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:15:07, skipping insertion in model container [2018-06-26 18:15:07,936 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:07" (2/4) ... [2018-06-26 18:15:07,937 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dc57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:15:07, skipping insertion in model container [2018-06-26 18:15:07,937 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:07" (3/4) ... [2018-06-26 18:15:07,937 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dc57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:15:07, skipping insertion in model container [2018-06-26 18:15:07,937 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:15:07" (4/4) ... [2018-06-26 18:15:07,939 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:15:07,949 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:15:07,957 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:15:07,995 INFO ]: Using default assertion order modulation [2018-06-26 18:15:07,996 INFO ]: Interprodecural is true [2018-06-26 18:15:07,996 INFO ]: Hoare is false [2018-06-26 18:15:07,996 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:15:07,996 INFO ]: Backedges is TWOTRACK [2018-06-26 18:15:07,996 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:15:07,996 INFO ]: Difference is false [2018-06-26 18:15:07,996 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:15:07,996 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:15:08,005 INFO ]: Start isEmpty. Operand 8 states. [2018-06-26 18:15:08,014 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:15:08,014 INFO ]: Found error trace [2018-06-26 18:15:08,015 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:15:08,015 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:08,020 INFO ]: Analyzing trace with hash 32849379, now seen corresponding path program 1 times [2018-06-26 18:15:08,022 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:08,023 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:08,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:08,053 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:08,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:08,093 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:08,158 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:08,161 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:08,161 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:15:08,163 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:08,173 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:08,174 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:08,176 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-26 18:15:08,275 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:08,275 INFO ]: Finished difference Result 13 states and 19 transitions. [2018-06-26 18:15:08,275 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:08,276 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:15:08,276 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:08,284 INFO ]: With dead ends: 13 [2018-06-26 18:15:08,284 INFO ]: Without dead ends: 13 [2018-06-26 18:15:08,285 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:08,298 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 18:15:08,337 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-26 18:15:08,339 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-26 18:15:08,340 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2018-06-26 18:15:08,341 INFO ]: Start accepts. Automaton has 13 states and 19 transitions. Word has length 5 [2018-06-26 18:15:08,342 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:08,342 INFO ]: Abstraction has 13 states and 19 transitions. [2018-06-26 18:15:08,342 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:08,342 INFO ]: Start isEmpty. Operand 13 states and 19 transitions. [2018-06-26 18:15:08,345 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:15:08,345 INFO ]: Found error trace [2018-06-26 18:15:08,345 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:15:08,345 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:08,345 INFO ]: Analyzing trace with hash 32908961, now seen corresponding path program 1 times [2018-06-26 18:15:08,345 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:08,345 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:08,346 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:08,346 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:08,346 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:08,363 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:08,448 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:08,448 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:08,448 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:15:08,449 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:08,449 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:08,449 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:08,450 INFO ]: Start difference. First operand 13 states and 19 transitions. Second operand 3 states. [2018-06-26 18:15:08,588 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:08,588 INFO ]: Finished difference Result 19 states and 29 transitions. [2018-06-26 18:15:08,589 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:08,589 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:15:08,589 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:08,590 INFO ]: With dead ends: 19 [2018-06-26 18:15:08,590 INFO ]: Without dead ends: 19 [2018-06-26 18:15:08,591 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:08,591 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-26 18:15:08,596 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-06-26 18:15:08,596 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-26 18:15:08,597 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2018-06-26 18:15:08,597 INFO ]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 5 [2018-06-26 18:15:08,597 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:08,597 INFO ]: Abstraction has 15 states and 23 transitions. [2018-06-26 18:15:08,597 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:08,597 INFO ]: Start isEmpty. Operand 15 states and 23 transitions. [2018-06-26 18:15:08,597 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:15:08,597 INFO ]: Found error trace [2018-06-26 18:15:08,597 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:15:08,597 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:08,598 INFO ]: Analyzing trace with hash 1019795418, now seen corresponding path program 1 times [2018-06-26 18:15:08,598 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:08,598 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:08,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:08,598 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:08,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:08,618 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:08,739 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:08,739 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:15:08,739 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 [2018-06-26 18:15:08,746 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:08,775 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:08,783 INFO ]: Computing forward predicates... [2018-06-26 18:15:08,962 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:08,982 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:15:08,982 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-26 18:15:08,982 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:15:08,983 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:15:08,983 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:15:08,983 INFO ]: Start difference. First operand 15 states and 23 transitions. Second operand 6 states. [2018-06-26 18:15:09,229 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:09,229 INFO ]: Finished difference Result 29 states and 50 transitions. [2018-06-26 18:15:09,229 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 18:15:09,229 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-26 18:15:09,230 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:09,232 INFO ]: With dead ends: 29 [2018-06-26 18:15:09,232 INFO ]: Without dead ends: 29 [2018-06-26 18:15:09,232 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:15:09,232 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-26 18:15:09,240 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 19. [2018-06-26 18:15:09,240 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-26 18:15:09,241 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2018-06-26 18:15:09,241 INFO ]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 6 [2018-06-26 18:15:09,241 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:09,241 INFO ]: Abstraction has 19 states and 31 transitions. [2018-06-26 18:15:09,241 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:15:09,242 INFO ]: Start isEmpty. Operand 19 states and 31 transitions. [2018-06-26 18:15:09,242 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 18:15:09,242 INFO ]: Found error trace [2018-06-26 18:15:09,242 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:09,242 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:09,242 INFO ]: Analyzing trace with hash -803589174, now seen corresponding path program 1 times [2018-06-26 18:15:09,242 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:09,242 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:09,243 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:09,243 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:09,243 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:09,258 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:09,327 INFO ]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:15:09,327 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:09,327 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-26 18:15:09,327 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:15:09,328 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:15:09,328 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:15:09,328 INFO ]: Start difference. First operand 19 states and 31 transitions. Second operand 5 states. [2018-06-26 18:15:09,534 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:09,534 INFO ]: Finished difference Result 24 states and 38 transitions. [2018-06-26 18:15:09,534 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-26 18:15:09,534 INFO ]: Start accepts. Automaton has 5 states. Word has length 11 [2018-06-26 18:15:09,534 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:09,535 INFO ]: With dead ends: 24 [2018-06-26 18:15:09,535 INFO ]: Without dead ends: 22 [2018-06-26 18:15:09,535 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-26 18:15:09,535 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-26 18:15:09,540 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-06-26 18:15:09,540 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-26 18:15:09,541 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 32 transitions. [2018-06-26 18:15:09,541 INFO ]: Start accepts. Automaton has 20 states and 32 transitions. Word has length 11 [2018-06-26 18:15:09,541 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:09,541 INFO ]: Abstraction has 20 states and 32 transitions. [2018-06-26 18:15:09,541 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:15:09,541 INFO ]: Start isEmpty. Operand 20 states and 32 transitions. [2018-06-26 18:15:09,542 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-26 18:15:09,542 INFO ]: Found error trace [2018-06-26 18:15:09,542 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:09,542 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:09,542 INFO ]: Analyzing trace with hash -1962159309, now seen corresponding path program 1 times [2018-06-26 18:15:09,542 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:09,542 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:09,542 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:09,542 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:09,542 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:09,572 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:09,940 INFO ]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:15:09,940 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:15:09,940 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 [2018-06-26 18:15:09,949 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:09,969 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:09,971 INFO ]: Computing forward predicates... [2018-06-26 18:15:10,397 INFO ]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:15:10,421 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:15:10,421 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-06-26 18:15:10,421 INFO ]: Interpolant automaton has 14 states [2018-06-26 18:15:10,421 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-26 18:15:10,421 INFO ]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-06-26 18:15:10,421 INFO ]: Start difference. First operand 20 states and 32 transitions. Second operand 14 states. [2018-06-26 18:15:10,839 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:10,839 INFO ]: Finished difference Result 42 states and 68 transitions. [2018-06-26 18:15:10,839 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-26 18:15:10,839 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-26 18:15:10,839 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:10,842 INFO ]: With dead ends: 42 [2018-06-26 18:15:10,842 INFO ]: Without dead ends: 42 [2018-06-26 18:15:10,842 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-06-26 18:15:10,842 INFO ]: Start minimizeSevpa. Operand 42 states. [2018-06-26 18:15:10,847 INFO ]: Finished minimizeSevpa. Reduced states from 42 to 28. [2018-06-26 18:15:10,848 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-26 18:15:10,849 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2018-06-26 18:15:10,849 INFO ]: Start accepts. Automaton has 28 states and 46 transitions. Word has length 12 [2018-06-26 18:15:10,849 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:10,849 INFO ]: Abstraction has 28 states and 46 transitions. [2018-06-26 18:15:10,849 INFO ]: Interpolant automaton has 14 states. [2018-06-26 18:15:10,849 INFO ]: Start isEmpty. Operand 28 states and 46 transitions. [2018-06-26 18:15:10,850 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-26 18:15:10,850 INFO ]: Found error trace [2018-06-26 18:15:10,850 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-26 18:15:10,850 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:10,850 INFO ]: Analyzing trace with hash -1887372166, now seen corresponding path program 2 times [2018-06-26 18:15:10,850 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:10,850 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:10,851 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:10,851 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:10,851 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:10,887 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:11,069 INFO ]: Checked inductivity of 23 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-26 18:15:11,069 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:15:11,153 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) [2018-06-26 18:15:11,163 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:15:11,205 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:15:11,205 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:11,208 INFO ]: Computing forward predicates... [2018-06-26 18:15:11,610 INFO ]: Checked inductivity of 23 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-26 18:15:11,633 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:15:11,633 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 20 [2018-06-26 18:15:11,633 INFO ]: Interpolant automaton has 20 states [2018-06-26 18:15:11,633 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-26 18:15:11,634 INFO ]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-06-26 18:15:11,634 INFO ]: Start difference. First operand 28 states and 46 transitions. Second operand 20 states. [2018-06-26 18:15:12,069 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2018-06-26 18:15:13,035 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:13,035 INFO ]: Finished difference Result 57 states and 121 transitions. [2018-06-26 18:15:13,035 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-06-26 18:15:13,035 INFO ]: Start accepts. Automaton has 20 states. Word has length 18 [2018-06-26 18:15:13,035 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:13,035 INFO ]: With dead ends: 57 [2018-06-26 18:15:13,035 INFO ]: Without dead ends: 0 [2018-06-26 18:15:13,036 INFO ]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=376, Invalid=1880, Unknown=0, NotChecked=0, Total=2256 [2018-06-26 18:15:13,036 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:15:13,036 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:15:13,036 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:15:13,036 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:15:13,036 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-06-26 18:15:13,036 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:13,036 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:15:13,036 INFO ]: Interpolant automaton has 20 states. [2018-06-26 18:15:13,036 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:15:13,036 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:15:13,039 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:15:13,040 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:15:13 BasicIcfg [2018-06-26 18:15:13,040 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:15:13,041 INFO ]: Toolchain (without parser) took 5586.52 ms. Allocated memory was 309.3 MB in the beginning and 364.4 MB in the end (delta: 55.1 MB). Free memory was 265.8 MB in the beginning and 322.3 MB in the end (delta: -56.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:15:13,042 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 309.3 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:15:13,043 INFO ]: ChcToBoogie took 50.18 ms. Allocated memory is still 309.3 MB. Free memory was 264.8 MB in the beginning and 262.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:13,043 INFO ]: Boogie Preprocessor took 36.29 ms. Allocated memory is still 309.3 MB. Free memory was 262.8 MB in the beginning and 261.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:13,044 INFO ]: RCFGBuilder took 293.31 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 253.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:13,044 INFO ]: BlockEncodingV2 took 87.05 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 250.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:13,045 INFO ]: TraceAbstraction took 5108.20 ms. Allocated memory was 309.3 MB in the beginning and 364.4 MB in the end (delta: 55.1 MB). Free memory was 250.7 MB in the beginning and 322.3 MB in the end (delta: -71.6 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:15:13,048 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 17 edges - StatisticsResult: Encoded RCFG 8 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.05 ms. Allocated memory is still 309.3 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.18 ms. Allocated memory is still 309.3 MB. Free memory was 264.8 MB in the beginning and 262.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.29 ms. Allocated memory is still 309.3 MB. Free memory was 262.8 MB in the beginning and 261.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 293.31 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 253.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 87.05 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 250.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5108.20 ms. Allocated memory was 309.3 MB in the beginning and 364.4 MB in the end (delta: 55.1 MB). Free memory was 250.7 MB in the beginning and 322.3 MB in the end (delta: -71.6 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 2 procedures, 8 locations, 1 error locations. SAFE Result, 5.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 49 SDslu, 96 SDs, 0 SdLazy, 709 SolverSat, 162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=5, 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, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 4478 SizeOfPredicates, 21 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 36/69 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/ack.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-15-13-061.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ack.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-15-13-061.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ack.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-15-13-061.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ack.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-15-13-061.csv Received shutdown request...