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/llreve-bench/smt2/loop__loop.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:42:32,977 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:42:32,979 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:42:32,992 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:42:32,992 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:42:32,994 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:42:32,995 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:42:32,998 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:42:33,000 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:42:33,001 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:42:33,002 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:42:33,002 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:42:33,003 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:42:33,004 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:42:33,008 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:42:33,008 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:42:33,010 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:42:33,020 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:42:33,022 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:42:33,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:42:33,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:42:33,028 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:42:33,028 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:42:33,028 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:42:33,029 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:42:33,030 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:42:33,030 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:42:33,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:42:33,033 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:42:33,033 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:42:33,034 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:42:33,034 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:42:33,035 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:42:33,035 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:42:33,040 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:42:33,040 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:42:33,061 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:42:33,062 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:42:33,064 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:42:33,064 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:42:33,065 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:42:33,065 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:42:33,065 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:42:33,066 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:42:33,066 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:42:33,066 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:42:33,066 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:42:33,066 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:42:33,067 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:42:33,069 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:42:33,069 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:42:33,070 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:42:33,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:42:33,070 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:42:33,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:42:33,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:42:33,070 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:42:33,072 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:42:33,072 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:42:33,119 INFO ]: Repository-Root is: /tmp [2018-06-24 21:42:33,132 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:42:33,135 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:42:33,136 INFO ]: Initializing SmtParser... [2018-06-24 21:42:33,137 INFO ]: SmtParser initialized [2018-06-24 21:42:33,137 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__loop.smt2 [2018-06-24 21:42:33,138 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 [2018-06-24 21:42:33,228 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__loop.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@2fab15a [2018-06-24 21:42:33,380 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__loop.smt2 [2018-06-24 21:42:33,387 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:42:33,392 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:42:33,392 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:42:33,393 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:42:33,393 INFO ]: ChcToBoogie initialized [2018-06-24 21:42:33,396 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,462 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33 Unit [2018-06-24 21:42:33,462 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:42:33,463 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:42:33,463 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:42:33,463 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:42:33,484 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,484 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,489 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,489 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,492 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,494 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,495 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,497 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:42:33,497 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:42:33,497 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:42:33,497 INFO ]: RCFGBuilder initialized [2018-06-24 21:42:33,498 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (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) [2018-06-24 21:42:33,511 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:42:33,511 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:42:33,511 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:42:33,511 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:42:33,511 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:42:33,511 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 [2018-06-24 21:42:33,649 INFO ]: Using library mode [2018-06-24 21:42:33,650 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:33 BoogieIcfgContainer [2018-06-24 21:42:33,650 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:42:33,650 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:42:33,650 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:42:33,651 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:42:33,652 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:33" (1/1) ... [2018-06-24 21:42:33,667 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-24 21:42:33,668 INFO ]: Using Remove infeasible edges [2018-06-24 21:42:33,669 INFO ]: Using Maximize final states [2018-06-24 21:42:33,669 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:42:33,670 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:42:33,671 INFO ]: Using Remove sink states [2018-06-24 21:42:33,672 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:42:33,672 INFO ]: Using Use SBE [2018-06-24 21:42:33,678 INFO ]: SBE split 0 edges [2018-06-24 21:42:33,683 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:42:33,685 INFO ]: 0 new accepting states [2018-06-24 21:42:33,721 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:42:33,723 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:42:33,727 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:42:33,727 INFO ]: 0 new accepting states [2018-06-24 21:42:33,728 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:42:33,728 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:42:33,728 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:42:33,728 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:42:33 BasicIcfg [2018-06-24 21:42:33,729 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:42:33,729 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:42:33,729 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:42:33,745 INFO ]: TraceAbstraction initialized [2018-06-24 21:42:33,745 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:42:33" (1/4) ... [2018-06-24 21:42:33,746 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce28d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:42:33, skipping insertion in model container [2018-06-24 21:42:33,746 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:33" (2/4) ... [2018-06-24 21:42:33,746 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce28d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:42:33, skipping insertion in model container [2018-06-24 21:42:33,746 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:33" (3/4) ... [2018-06-24 21:42:33,746 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce28d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:42:33, skipping insertion in model container [2018-06-24 21:42:33,747 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:42:33" (4/4) ... [2018-06-24 21:42:33,748 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:42:33,757 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:42:33,768 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:42:33,816 INFO ]: Using default assertion order modulation [2018-06-24 21:42:33,816 INFO ]: Interprodecural is true [2018-06-24 21:42:33,816 INFO ]: Hoare is false [2018-06-24 21:42:33,816 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:42:33,816 INFO ]: Backedges is TWOTRACK [2018-06-24 21:42:33,816 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:42:33,816 INFO ]: Difference is false [2018-06-24 21:42:33,816 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:42:33,816 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:42:33,828 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:42:33,838 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:42:33,838 INFO ]: Found error trace [2018-06-24 21:42:33,839 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:42:33,839 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:33,857 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-24 21:42:33,860 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:33,861 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:33,902 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:33,902 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:33,902 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:33,936 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:33,997 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:33,999 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:42:33,999 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:42:34,000 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:42:34,011 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:42:34,011 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:34,013 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:42:34,064 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:34,065 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:42:34,065 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:42:34,066 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:42:34,066 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:34,073 INFO ]: With dead ends: 7 [2018-06-24 21:42:34,073 INFO ]: Without dead ends: 7 [2018-06-24 21:42:34,075 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 [2018-06-24 21:42:34,087 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:42:34,116 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:42:34,117 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:42:34,117 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:42:34,118 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:42:34,118 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:34,119 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:42:34,119 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:42:34,119 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:42:34,119 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:42:34,119 INFO ]: Found error trace [2018-06-24 21:42:34,119 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:42:34,119 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:34,119 INFO ]: Analyzing trace with hash 1156261132, now seen corresponding path program 1 times [2018-06-24 21:42:34,119 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:34,119 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:34,120 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:34,120 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:34,120 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:34,148 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:34,217 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:34,217 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:34,217 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) [2018-06-24 21:42:34,231 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:42:34,269 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:34,278 INFO ]: Computing forward predicates... [2018-06-24 21:42:34,319 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:34,339 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:42:34,339 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 21:42:34,340 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:42:34,340 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:42:34,340 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:42:34,340 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 5 states. [2018-06-24 21:42:34,539 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:34,539 INFO ]: Finished difference Result 10 states and 19 transitions. [2018-06-24 21:42:34,540 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:42:34,540 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:42:34,541 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:34,541 INFO ]: With dead ends: 10 [2018-06-24 21:42:34,541 INFO ]: Without dead ends: 10 [2018-06-24 21:42:34,542 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:42:34,542 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:42:34,543 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-24 21:42:34,543 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 21:42:34,544 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 16 transitions. [2018-06-24 21:42:34,544 INFO ]: Start accepts. Automaton has 9 states and 16 transitions. Word has length 6 [2018-06-24 21:42:34,544 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:34,544 INFO ]: Abstraction has 9 states and 16 transitions. [2018-06-24 21:42:34,544 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:42:34,544 INFO ]: Start isEmpty. Operand 9 states and 16 transitions. [2018-06-24 21:42:34,544 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:42:34,544 INFO ]: Found error trace [2018-06-24 21:42:34,544 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:42:34,544 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:34,545 INFO ]: Analyzing trace with hash 1156290923, now seen corresponding path program 1 times [2018-06-24 21:42:34,545 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:34,545 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:34,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:34,547 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:34,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:34,560 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:34,624 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:34,624 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:42:34,624 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:42:34,624 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:42:34,624 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:42:34,624 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:34,625 INFO ]: Start difference. First operand 9 states and 16 transitions. Second operand 3 states. [2018-06-24 21:42:34,699 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:34,699 INFO ]: Finished difference Result 10 states and 19 transitions. [2018-06-24 21:42:34,701 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:42:34,701 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 21:42:34,701 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:34,702 INFO ]: With dead ends: 10 [2018-06-24 21:42:34,702 INFO ]: Without dead ends: 10 [2018-06-24 21:42:34,702 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:34,702 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:42:34,703 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-24 21:42:34,703 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 21:42:34,704 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 16 transitions. [2018-06-24 21:42:34,704 INFO ]: Start accepts. Automaton has 9 states and 16 transitions. Word has length 6 [2018-06-24 21:42:34,704 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:34,704 INFO ]: Abstraction has 9 states and 16 transitions. [2018-06-24 21:42:34,704 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:42:34,704 INFO ]: Start isEmpty. Operand 9 states and 16 transitions. [2018-06-24 21:42:34,704 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:42:34,704 INFO ]: Found error trace [2018-06-24 21:42:34,704 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:42:34,704 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:34,704 INFO ]: Analyzing trace with hash 1484954627, now seen corresponding path program 1 times [2018-06-24 21:42:34,705 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:34,705 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:34,705 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:34,705 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:34,705 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:34,737 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:34,877 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:34,877 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:34,877 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 [2018-06-24 21:42:34,894 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:34,912 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:34,914 INFO ]: Computing forward predicates... [2018-06-24 21:42:34,971 INFO ]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:34,996 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:42:34,996 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2018-06-24 21:42:34,997 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:42:34,997 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:42:34,997 INFO ]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:42:34,997 INFO ]: Start difference. First operand 9 states and 16 transitions. Second operand 7 states. [2018-06-24 21:42:35,160 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-06-24 21:42:35,205 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:35,205 INFO ]: Finished difference Result 14 states and 27 transitions. [2018-06-24 21:42:35,206 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:42:35,206 INFO ]: Start accepts. Automaton has 7 states. Word has length 7 [2018-06-24 21:42:35,206 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:35,206 INFO ]: With dead ends: 14 [2018-06-24 21:42:35,206 INFO ]: Without dead ends: 10 [2018-06-24 21:42:35,206 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:42:35,207 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:42:35,208 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-24 21:42:35,208 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 21:42:35,208 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-24 21:42:35,208 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-24 21:42:35,208 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:35,208 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-24 21:42:35,208 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:42:35,208 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-24 21:42:35,209 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:42:35,209 INFO ]: Found error trace [2018-06-24 21:42:35,209 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-24 21:42:35,209 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:35,209 INFO ]: Analyzing trace with hash -1240001588, now seen corresponding path program 1 times [2018-06-24 21:42:35,209 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:35,209 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:35,210 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:35,210 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:35,210 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:35,225 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:35,282 INFO ]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:42:35,282 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:35,283 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 [2018-06-24 21:42:35,288 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:35,326 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:35,328 INFO ]: Computing forward predicates... [2018-06-24 21:42:35,400 INFO ]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:35,421 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:42:35,421 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-24 21:42:35,421 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:42:35,421 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:42:35,422 INFO ]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:42:35,422 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 8 states. [2018-06-24 21:42:35,605 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-06-24 21:42:35,986 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-06-24 21:42:36,052 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:36,052 INFO ]: Finished difference Result 11 states and 20 transitions. [2018-06-24 21:42:36,053 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:42:36,053 INFO ]: Start accepts. Automaton has 8 states. Word has length 8 [2018-06-24 21:42:36,053 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:36,053 INFO ]: With dead ends: 11 [2018-06-24 21:42:36,053 INFO ]: Without dead ends: 0 [2018-06-24 21:42:36,053 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:42:36,053 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:42:36,053 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:42:36,053 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:42:36,053 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:42:36,053 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 21:42:36,053 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:36,053 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:42:36,054 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:42:36,054 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:42:36,054 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:42:36,055 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:42:36,057 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:42:36 BasicIcfg [2018-06-24 21:42:36,057 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:42:36,058 INFO ]: Toolchain (without parser) took 2670.41 ms. Allocated memory was 306.7 MB in the beginning and 326.6 MB in the end (delta: 19.9 MB). Free memory was 263.1 MB in the beginning and 272.2 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:36,058 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:42:36,059 INFO ]: ChcToBoogie took 69.90 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:36,059 INFO ]: Boogie Preprocessor took 34.07 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 260.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:42:36,060 INFO ]: RCFGBuilder took 152.56 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 252.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:36,060 INFO ]: BlockEncodingV2 took 78.46 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:36,061 INFO ]: TraceAbstraction took 2327.38 ms. Allocated memory was 306.7 MB in the beginning and 326.6 MB in the end (delta: 19.9 MB). Free memory was 250.1 MB in the beginning and 272.2 MB in the end (delta: -22.1 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:42:36,064 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 69.90 ms. Allocated memory is still 306.7 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.07 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 260.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 152.56 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 252.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 78.46 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2327.38 ms. Allocated memory was 306.7 MB in the beginning and 326.6 MB in the end (delta: 19.9 MB). Free memory was 250.1 MB in the beginning and 272.2 MB in the end (delta: -22.1 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, 6 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 29 SDs, 0 SdLazy, 98 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 957 SizeOfPredicates, 9 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/21 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/loop__loop.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-42-36-076.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__loop.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-42-36-076.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__loop.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-42-36-076.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__loop.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-42-36-076.csv Received shutdown request...