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/eldarica-misc/LIA/HOLA/12.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:40:53,819 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:40:53,821 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:40:53,836 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:40:53,837 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:40:53,838 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:40:53,840 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:40:53,849 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:40:53,852 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:40:53,853 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:40:53,854 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:40:53,854 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:40:53,862 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:40:53,866 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:40:53,867 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:40:53,868 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:40:53,869 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:40:53,870 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:40:53,872 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:40:53,873 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:40:53,875 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:40:53,876 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:40:53,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:40:53,878 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:40:53,878 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:40:53,879 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:40:53,880 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:40:53,881 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:40:53,882 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:40:53,883 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:40:53,883 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:40:53,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:40:53,884 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:40:53,884 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:40:53,890 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:40:53,891 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:40:53,891 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:40:53,919 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:40:53,919 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:40:53,919 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:40:53,919 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:40:53,920 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:40:53,921 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:40:53,921 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:40:53,921 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:40:53,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:40:53,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:40:53,924 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:40:53,924 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:40:53,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:40:53,925 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:40:53,925 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:40:53,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:40:53,925 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:40:53,926 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:40:53,926 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:40:53,926 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:40:53,926 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:40:53,929 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:40:53,930 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:40:53,990 INFO ]: Repository-Root is: /tmp [2018-06-26 17:40:54,004 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:40:54,008 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:40:54,009 INFO ]: Initializing SmtParser... [2018-06-26 17:40:54,009 INFO ]: SmtParser initialized [2018-06-26 17:40:54,010 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/12.c.smt2 [2018-06-26 17:40:54,011 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 17:40:54,107 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/12.c.smt2 unknown [2018-06-26 17:40:54,936 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/12.c.smt2 [2018-06-26 17:40:54,942 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:40:54,949 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:40:54,949 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:40:54,949 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:40:54,950 INFO ]: ChcToBoogie initialized [2018-06-26 17:40:54,953 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:40:54" (1/1) ... [2018-06-26 17:40:55,056 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55 Unit [2018-06-26 17:40:55,056 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:40:55,056 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:40:55,056 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:40:55,056 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:40:55,081 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (1/1) ... [2018-06-26 17:40:55,081 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (1/1) ... [2018-06-26 17:40:55,108 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (1/1) ... [2018-06-26 17:40:55,108 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (1/1) ... [2018-06-26 17:40:55,127 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (1/1) ... [2018-06-26 17:40:55,129 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (1/1) ... [2018-06-26 17:40:55,141 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (1/1) ... [2018-06-26 17:40:55,148 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:40:55,148 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:40:55,148 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:40:55,149 INFO ]: RCFGBuilder initialized [2018-06-26 17:40:55,149 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (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 17:40:55,178 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:40:55,178 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:40:55,178 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:40:55,178 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:40:55,178 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:40:55,178 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 17:40:56,466 INFO ]: Using library mode [2018-06-26 17:40:56,466 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:56 BoogieIcfgContainer [2018-06-26 17:40:56,466 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:40:56,467 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:40:56,467 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:40:56,468 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:40:56,469 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:56" (1/1) ... [2018-06-26 17:40:56,494 INFO ]: Initial Icfg 53 locations, 61 edges [2018-06-26 17:40:56,496 INFO ]: Using Remove infeasible edges [2018-06-26 17:40:56,497 INFO ]: Using Maximize final states [2018-06-26 17:40:56,497 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:40:56,497 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:40:56,501 INFO ]: Using Remove sink states [2018-06-26 17:40:56,502 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:40:56,502 INFO ]: Using Use SBE [2018-06-26 17:40:56,519 INFO ]: SBE split 0 edges [2018-06-26 17:40:56,535 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:40:56,537 INFO ]: 0 new accepting states [2018-06-26 17:40:58,361 INFO ]: Removed 116 edges and 43 locations by large block encoding [2018-06-26 17:40:58,363 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:40:58,367 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:40:58,367 INFO ]: 0 new accepting states [2018-06-26 17:40:58,367 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:40:58,368 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:40:58,368 INFO ]: Encoded RCFG 8 locations, 16 edges [2018-06-26 17:40:58,368 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:40:58 BasicIcfg [2018-06-26 17:40:58,368 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:40:58,369 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:40:58,369 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:40:58,372 INFO ]: TraceAbstraction initialized [2018-06-26 17:40:58,373 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:40:54" (1/4) ... [2018-06-26 17:40:58,373 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383a5b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:40:58, skipping insertion in model container [2018-06-26 17:40:58,374 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:55" (2/4) ... [2018-06-26 17:40:58,374 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383a5b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:40:58, skipping insertion in model container [2018-06-26 17:40:58,374 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:56" (3/4) ... [2018-06-26 17:40:58,374 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383a5b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:40:58, skipping insertion in model container [2018-06-26 17:40:58,374 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:40:58" (4/4) ... [2018-06-26 17:40:58,376 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:40:58,385 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:40:58,395 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:40:58,440 INFO ]: Using default assertion order modulation [2018-06-26 17:40:58,441 INFO ]: Interprodecural is true [2018-06-26 17:40:58,441 INFO ]: Hoare is false [2018-06-26 17:40:58,441 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:40:58,441 INFO ]: Backedges is TWOTRACK [2018-06-26 17:40:58,441 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:40:58,441 INFO ]: Difference is false [2018-06-26 17:40:58,441 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:40:58,441 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:40:58,454 INFO ]: Start isEmpty. Operand 8 states. [2018-06-26 17:40:58,465 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:40:58,465 INFO ]: Found error trace [2018-06-26 17:40:58,466 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:40:58,467 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:40:58,472 INFO ]: Analyzing trace with hash 1955074703, now seen corresponding path program 1 times [2018-06-26 17:40:58,474 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:40:58,475 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:40:58,525 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:58,525 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:58,525 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:58,653 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:58,869 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:58,871 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:40:58,871 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:40:58,873 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:40:58,889 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:40:58,890 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:40:58,892 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-26 17:40:59,095 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:40:59,095 INFO ]: Finished difference Result 9 states and 19 transitions. [2018-06-26 17:40:59,096 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:40:59,097 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 17:40:59,098 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:40:59,107 INFO ]: With dead ends: 9 [2018-06-26 17:40:59,108 INFO ]: Without dead ends: 9 [2018-06-26 17:40:59,109 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 17:40:59,129 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 17:40:59,157 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-26 17:40:59,158 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:40:59,159 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2018-06-26 17:40:59,161 INFO ]: Start accepts. Automaton has 9 states and 19 transitions. Word has length 6 [2018-06-26 17:40:59,161 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:40:59,161 INFO ]: Abstraction has 9 states and 19 transitions. [2018-06-26 17:40:59,161 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:40:59,161 INFO ]: Start isEmpty. Operand 9 states and 19 transitions. [2018-06-26 17:40:59,162 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:40:59,162 INFO ]: Found error trace [2018-06-26 17:40:59,162 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:40:59,162 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:40:59,162 INFO ]: Analyzing trace with hash 441410429, now seen corresponding path program 1 times [2018-06-26 17:40:59,162 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:40:59,162 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:40:59,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:59,163 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:59,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:59,229 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:59,512 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-06-26 17:40:59,512 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:59,512 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:40:59,513 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 17:40:59,528 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:59,772 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:59,787 INFO ]: Computing forward predicates... [2018-06-26 17:40:59,911 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:59,949 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:40:59,949 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-26 17:40:59,949 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:40:59,950 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:40:59,950 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:40:59,950 INFO ]: Start difference. First operand 9 states and 19 transitions. Second operand 5 states. [2018-06-26 17:41:00,428 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:41:00,428 INFO ]: Finished difference Result 10 states and 21 transitions. [2018-06-26 17:41:00,429 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:41:00,429 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-26 17:41:00,429 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:41:00,429 INFO ]: With dead ends: 10 [2018-06-26 17:41:00,429 INFO ]: Without dead ends: 10 [2018-06-26 17:41:00,431 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:41:00,431 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 17:41:00,432 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-26 17:41:00,432 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:41:00,432 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 21 transitions. [2018-06-26 17:41:00,433 INFO ]: Start accepts. Automaton has 10 states and 21 transitions. Word has length 7 [2018-06-26 17:41:00,433 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:41:00,433 INFO ]: Abstraction has 10 states and 21 transitions. [2018-06-26 17:41:00,433 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:41:00,433 INFO ]: Start isEmpty. Operand 10 states and 21 transitions. [2018-06-26 17:41:00,433 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:41:00,433 INFO ]: Found error trace [2018-06-26 17:41:00,433 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-26 17:41:00,433 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:41:00,433 INFO ]: Analyzing trace with hash 762547564, now seen corresponding path program 1 times [2018-06-26 17:41:00,433 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:41:00,433 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:41:00,436 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:00,436 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:00,436 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:00,495 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:00,674 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:41:00,674 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:41:00,674 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 17:41:00,684 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:01,015 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:01,024 INFO ]: Computing forward predicates... [2018-06-26 17:41:01,171 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:41:01,207 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:41:01,207 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-26 17:41:01,207 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:41:01,207 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:41:01,208 INFO ]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:41:01,210 INFO ]: Start difference. First operand 10 states and 21 transitions. Second operand 6 states. [2018-06-26 17:41:01,295 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:41:01,295 INFO ]: Finished difference Result 11 states and 24 transitions. [2018-06-26 17:41:01,296 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:41:01,296 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-26 17:41:01,296 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:41:01,297 INFO ]: With dead ends: 11 [2018-06-26 17:41:01,297 INFO ]: Without dead ends: 11 [2018-06-26 17:41:01,297 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:41:01,297 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:41:01,299 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-26 17:41:01,299 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-26 17:41:01,299 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 24 transitions. [2018-06-26 17:41:01,299 INFO ]: Start accepts. Automaton has 11 states and 24 transitions. Word has length 8 [2018-06-26 17:41:01,299 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:41:01,299 INFO ]: Abstraction has 11 states and 24 transitions. [2018-06-26 17:41:01,299 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:41:01,300 INFO ]: Start isEmpty. Operand 11 states and 24 transitions. [2018-06-26 17:41:01,300 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 17:41:01,300 INFO ]: Found error trace [2018-06-26 17:41:01,300 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2018-06-26 17:41:01,300 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:41:01,300 INFO ]: Analyzing trace with hash 2125093594, now seen corresponding path program 2 times [2018-06-26 17:41:01,300 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:41:01,300 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:41:01,301 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:01,301 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:01,301 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:01,375 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:01,506 INFO ]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 17:41:01,506 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:41:01,506 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 [2018-06-26 17:41:01,516 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 17:41:01,754 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 17:41:01,754 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:01,764 INFO ]: Computing forward predicates... [2018-06-26 17:41:01,895 INFO ]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 17:41:01,915 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:41:01,916 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-26 17:41:01,916 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:41:01,916 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:41:01,916 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:41:01,916 INFO ]: Start difference. First operand 11 states and 24 transitions. Second operand 6 states. [2018-06-26 17:41:02,138 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:41:02,138 INFO ]: Finished difference Result 13 states and 29 transitions. [2018-06-26 17:41:02,139 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:41:02,139 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-26 17:41:02,139 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:41:02,139 INFO ]: With dead ends: 13 [2018-06-26 17:41:02,139 INFO ]: Without dead ends: 13 [2018-06-26 17:41:02,140 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:41:02,140 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 17:41:02,141 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-06-26 17:41:02,141 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-26 17:41:02,142 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 27 transitions. [2018-06-26 17:41:02,142 INFO ]: Start accepts. Automaton has 12 states and 27 transitions. Word has length 9 [2018-06-26 17:41:02,146 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:41:02,146 INFO ]: Abstraction has 12 states and 27 transitions. [2018-06-26 17:41:02,146 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:41:02,147 INFO ]: Start isEmpty. Operand 12 states and 27 transitions. [2018-06-26 17:41:02,147 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 17:41:02,147 INFO ]: Found error trace [2018-06-26 17:41:02,147 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:41:02,147 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:41:02,147 INFO ]: Analyzing trace with hash 2103674403, now seen corresponding path program 1 times [2018-06-26 17:41:02,147 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:41:02,147 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:41:02,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:02,148 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 17:41:02,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:02,222 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:02,363 INFO ]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-26 17:41:02,363 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:41:02,363 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:41:02,364 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:41:02,364 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:41:02,364 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:41:02,364 INFO ]: Start difference. First operand 12 states and 27 transitions. Second operand 4 states. [2018-06-26 17:41:02,382 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:41:02,382 INFO ]: Finished difference Result 8 states and 19 transitions. [2018-06-26 17:41:02,383 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:41:02,383 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-26 17:41:02,383 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:41:02,383 INFO ]: With dead ends: 8 [2018-06-26 17:41:02,383 INFO ]: Without dead ends: 0 [2018-06-26 17:41:02,383 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 [2018-06-26 17:41:02,383 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:41:02,383 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:41:02,383 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:41:02,383 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:41:02,383 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-06-26 17:41:02,383 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:41:02,383 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:41:02,383 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:41:02,383 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:41:02,383 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:41:02,385 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:41:02,386 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:41:02 BasicIcfg [2018-06-26 17:41:02,386 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:41:02,387 INFO ]: Toolchain (without parser) took 7444.41 ms. Allocated memory was 308.8 MB in the beginning and 395.3 MB in the end (delta: 86.5 MB). Free memory was 212.7 MB in the beginning and 190.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 108.4 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:02,387 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:41:02,388 INFO ]: ChcToBoogie took 106.60 ms. Allocated memory is still 308.8 MB. Free memory was 212.7 MB in the beginning and 208.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:02,388 INFO ]: Boogie Preprocessor took 91.55 ms. Allocated memory is still 308.8 MB. Free memory was 208.7 MB in the beginning and 206.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:02,388 INFO ]: RCFGBuilder took 1317.76 ms. Allocated memory was 308.8 MB in the beginning and 326.1 MB in the end (delta: 17.3 MB). Free memory was 206.7 MB in the beginning and 223.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:02,389 INFO ]: BlockEncodingV2 took 1901.61 ms. Allocated memory was 326.1 MB in the beginning and 392.7 MB in the end (delta: 66.6 MB). Free memory was 223.0 MB in the beginning and 328.8 MB in the end (delta: -105.8 MB). Peak memory consumption was 87.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:02,389 INFO ]: TraceAbstraction took 4017.01 ms. Allocated memory was 392.7 MB in the beginning and 395.3 MB in the end (delta: 2.6 MB). Free memory was 328.8 MB in the beginning and 190.9 MB in the end (delta: 138.0 MB). Peak memory consumption was 140.6 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:02,392 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 53 locations, 61 edges - StatisticsResult: Encoded RCFG 8 locations, 16 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 106.60 ms. Allocated memory is still 308.8 MB. Free memory was 212.7 MB in the beginning and 208.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 91.55 ms. Allocated memory is still 308.8 MB. Free memory was 208.7 MB in the beginning and 206.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1317.76 ms. Allocated memory was 308.8 MB in the beginning and 326.1 MB in the end (delta: 17.3 MB). Free memory was 206.7 MB in the beginning and 223.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1901.61 ms. Allocated memory was 326.1 MB in the beginning and 392.7 MB in the end (delta: 66.6 MB). Free memory was 223.0 MB in the beginning and 328.8 MB in the end (delta: -105.8 MB). Peak memory consumption was 87.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4017.01 ms. Allocated memory was 392.7 MB in the beginning and 395.3 MB in the end (delta: 2.6 MB). Free memory was 328.8 MB in the beginning and 190.9 MB in the end (delta: 138.0 MB). Peak memory consumption was 140.6 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, 8 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 49 SDtfs, 30 SDslu, 73 SDs, 0 SdLazy, 85 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 57 ConstructedInterpolants, 1 QuantifiedInterpolants, 903 SizeOfPredicates, 106 NumberOfNonLiveVariables, 5176 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 13/27 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/12.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-41-02-407.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/12.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-41-02-407.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/12.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-41-02-407.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/12.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-41-02-407.csv Received shutdown request...