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/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:10:15,801 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:10:15,804 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:10:15,818 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:10:15,818 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:10:15,819 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:10:15,820 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:10:15,823 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:10:15,824 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:10:15,826 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:10:15,826 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:10:15,827 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:10:15,827 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:10:15,828 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:10:15,833 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:10:15,833 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:10:15,835 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:10:15,848 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:10:15,850 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:10:15,851 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:10:15,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:10:15,853 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:10:15,854 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:10:15,854 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:10:15,855 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:10:15,855 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:10:15,859 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:10:15,860 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:10:15,861 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:10:15,861 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:10:15,862 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:10:15,862 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:10:15,863 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:10:15,868 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:10:15,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:10:15,869 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:10:15,889 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:10:15,889 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:10:15,889 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:10:15,889 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:10:15,890 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:10:15,891 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:10:15,891 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:10:15,891 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:10:15,891 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:10:15,891 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:10:15,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:10:15,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:10:15,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:10:15,892 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:10:15,892 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:10:15,893 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:10:15,893 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:10:15,893 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:10:15,893 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:10:15,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:10:15,894 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:10:15,898 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:10:15,898 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:10:15,945 INFO ]: Repository-Root is: /tmp [2018-06-24 21:10:15,963 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:10:15,967 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:10:15,969 INFO ]: Initializing SmtParser... [2018-06-24 21:10:15,969 INFO ]: SmtParser initialized [2018-06-24 21:10:15,970 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 [2018-06-24 21:10:15,971 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 21:10:16,057 INFO ]: Executing SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@38ad250a [2018-06-24 21:10:16,229 INFO ]: Succesfully executed SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 [2018-06-24 21:10:16,234 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:10:16,241 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:10:16,241 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:10:16,241 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:10:16,242 INFO ]: ChcToBoogie initialized [2018-06-24 21:10:16,245 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,297 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16 Unit [2018-06-24 21:10:16,297 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:10:16,298 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:10:16,298 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:10:16,298 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:10:16,317 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,317 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,322 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,322 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,325 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,326 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,327 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,329 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:10:16,329 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:10:16,329 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:10:16,329 INFO ]: RCFGBuilder initialized [2018-06-24 21:10:16,330 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:10:16,344 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:10:16,344 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:10:16,344 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:10:16,344 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:10:16,344 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:10:16,344 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 21:10:16,546 INFO ]: Using library mode [2018-06-24 21:10:16,547 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:10:16 BoogieIcfgContainer [2018-06-24 21:10:16,547 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:10:16,547 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:10:16,547 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:10:16,548 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:10:16,558 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:10:16" (1/1) ... [2018-06-24 21:10:16,576 INFO ]: Initial Icfg 13 locations, 14 edges [2018-06-24 21:10:16,578 INFO ]: Using Remove infeasible edges [2018-06-24 21:10:16,579 INFO ]: Using Maximize final states [2018-06-24 21:10:16,579 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:10:16,579 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:10:16,581 INFO ]: Using Remove sink states [2018-06-24 21:10:16,582 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:10:16,582 INFO ]: Using Use SBE [2018-06-24 21:10:16,589 INFO ]: SBE split 0 edges [2018-06-24 21:10:16,594 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:10:16,595 INFO ]: 0 new accepting states [2018-06-24 21:10:16,727 INFO ]: Removed 16 edges and 5 locations by large block encoding [2018-06-24 21:10:16,729 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:10:16,730 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 21:10:16,730 INFO ]: 0 new accepting states [2018-06-24 21:10:16,730 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:10:16,731 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:10:16,733 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:10:16,733 INFO ]: 0 new accepting states [2018-06-24 21:10:16,733 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:10:16,733 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:10:16,733 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:10:16,733 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:10:16 BasicIcfg [2018-06-24 21:10:16,733 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:10:16,734 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:10:16,734 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:10:16,737 INFO ]: TraceAbstraction initialized [2018-06-24 21:10:16,737 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:10:16" (1/4) ... [2018-06-24 21:10:16,738 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7577a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:10:16, skipping insertion in model container [2018-06-24 21:10:16,738 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:10:16" (2/4) ... [2018-06-24 21:10:16,738 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7577a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:10:16, skipping insertion in model container [2018-06-24 21:10:16,739 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:10:16" (3/4) ... [2018-06-24 21:10:16,739 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7577a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:10:16, skipping insertion in model container [2018-06-24 21:10:16,739 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:10:16" (4/4) ... [2018-06-24 21:10:16,740 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:10:16,749 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:10:16,756 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:10:16,805 INFO ]: Using default assertion order modulation [2018-06-24 21:10:16,806 INFO ]: Interprodecural is true [2018-06-24 21:10:16,806 INFO ]: Hoare is false [2018-06-24 21:10:16,806 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:10:16,806 INFO ]: Backedges is TWOTRACK [2018-06-24 21:10:16,806 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:10:16,806 INFO ]: Difference is false [2018-06-24 21:10:16,806 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:10:16,806 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:10:16,820 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:10:16,841 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:10:16,841 INFO ]: Found error trace [2018-06-24 21:10:16,842 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:10:16,842 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:10:16,847 INFO ]: Analyzing trace with hash 31960390, now seen corresponding path program 1 times [2018-06-24 21:10:16,849 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:10:16,849 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:10:16,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:16,886 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:16,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:16,940 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:17,019 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:10:17,020 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:10:17,020 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:10:17,021 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:10:17,031 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:10:17,032 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:10:17,033 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:10:17,101 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:10:17,101 INFO ]: Finished difference Result 8 states and 12 transitions. [2018-06-24 21:10:17,101 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:10:17,102 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:10:17,102 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:10:17,111 INFO ]: With dead ends: 8 [2018-06-24 21:10:17,111 INFO ]: Without dead ends: 8 [2018-06-24 21:10:17,113 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 21:10:17,124 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 21:10:17,148 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-06-24 21:10:17,149 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:10:17,150 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:10:17,151 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:10:17,151 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:10:17,151 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:10:17,151 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:10:17,151 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:10:17,151 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:10:17,151 INFO ]: Found error trace [2018-06-24 21:10:17,151 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:10:17,151 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:10:17,152 INFO ]: Analyzing trace with hash 31961351, now seen corresponding path program 1 times [2018-06-24 21:10:17,152 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:10:17,152 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:10:17,153 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:17,153 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:17,153 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:17,176 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:17,234 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:10:17,234 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:10:17,234 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:10:17,236 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:10:17,236 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:10:17,236 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:10:17,236 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 3 states. [2018-06-24 21:10:17,260 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:10:17,260 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-24 21:10:17,261 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:10:17,261 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:10:17,261 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:10:17,261 INFO ]: With dead ends: 7 [2018-06-24 21:10:17,261 INFO ]: Without dead ends: 7 [2018-06-24 21:10:17,262 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 21:10:17,262 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:10:17,263 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:10:17,263 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:10:17,263 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-06-24 21:10:17,263 INFO ]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-06-24 21:10:17,263 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:10:17,263 INFO ]: Abstraction has 7 states and 7 transitions. [2018-06-24 21:10:17,263 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:10:17,264 INFO ]: Start isEmpty. Operand 7 states and 7 transitions. [2018-06-24 21:10:17,264 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:10:17,264 INFO ]: Found error trace [2018-06-24 21:10:17,264 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:10:17,264 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:10:17,264 INFO ]: Analyzing trace with hash 990724143, now seen corresponding path program 1 times [2018-06-24 21:10:17,264 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:10:17,264 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:10:17,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:17,267 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:17,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:10:17,302 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:17,478 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-06-24 21:10:17,508 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:10:17,509 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:10:17,509 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 [2018-06-24 21:10:17,518 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:10:17,567 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:10:17,575 INFO ]: Computing forward predicates... [2018-06-24 21:10:17,701 INFO ]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:10:17,720 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:10:17,720 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 21:10:17,720 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:10:17,721 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:10:17,721 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:10:17,721 INFO ]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-06-24 21:10:17,753 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:10:17,753 INFO ]: Finished difference Result 4 states and 4 transitions. [2018-06-24 21:10:17,756 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:10:17,756 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:10:17,756 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:10:17,756 INFO ]: With dead ends: 4 [2018-06-24 21:10:17,756 INFO ]: Without dead ends: 0 [2018-06-24 21:10:17,756 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:10:17,756 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:10:17,756 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:10:17,756 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:10:17,756 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:10:17,757 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-06-24 21:10:17,757 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:10:17,757 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:10:17,757 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:10:17,757 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:10:17,757 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:10:17,759 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:10:17,760 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:10:17 BasicIcfg [2018-06-24 21:10:17,760 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:10:17,761 INFO ]: Toolchain (without parser) took 1527.00 ms. Allocated memory is still 305.7 MB. Free memory was 262.1 MB in the beginning and 205.3 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:17,764 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:10:17,764 INFO ]: ChcToBoogie took 55.97 ms. Allocated memory is still 305.7 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:17,765 INFO ]: Boogie Preprocessor took 30.95 ms. Allocated memory is still 305.7 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:17,765 INFO ]: RCFGBuilder took 218.01 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 251.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:17,766 INFO ]: BlockEncodingV2 took 185.95 ms. Allocated memory is still 305.7 MB. Free memory was 251.1 MB in the beginning and 244.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:17,766 INFO ]: TraceAbstraction took 1026.33 ms. Allocated memory is still 305.7 MB. Free memory was 244.1 MB in the beginning and 205.3 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 3.6 GB. [2018-06-24 21:10:17,777 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 14 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.97 ms. Allocated memory is still 305.7 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 30.95 ms. Allocated memory is still 305.7 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 218.01 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 251.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 185.95 ms. Allocated memory is still 305.7 MB. Free memory was 251.1 MB in the beginning and 244.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1026.33 ms. Allocated memory is still 305.7 MB. Free memory was 244.1 MB in the beginning and 205.3 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 2 SDslu, 9 SDs, 0 SdLazy, 9 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=1, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 318 SizeOfPredicates, 12 NumberOfNonLiveVariables, 96 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 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/array_fill1_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-10-17-794.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-10-17-794.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-10-17-794.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_abstracted.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-10-17-794.csv Received shutdown request...