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/quant/libc__strncmp_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:58:53,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:58:53,939 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:58:53,951 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:58:53,952 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:58:53,952 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:58:53,953 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:58:53,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:58:53,958 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:58:53,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:58:53,961 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:58:53,961 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:58:53,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:58:53,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:58:53,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:58:53,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:58:53,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:58:53,977 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:58:53,978 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:58:53,979 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:58:53,980 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:58:53,985 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:58:53,986 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:58:53,986 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:58:53,987 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:58:53,987 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:58:53,989 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:58:53,990 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:58:53,991 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:58:53,991 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:58:53,991 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:58:53,996 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:58:53,996 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:58:53,997 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:58:53,997 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:58:53,998 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:58:54,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:58:54,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:58:54,018 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:58:54,019 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:58:54,019 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:58:54,020 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:58:54,020 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:58:54,020 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:58:54,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:58:54,020 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:58:54,021 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:58:54,021 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:58:54,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:58:54,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:58:54,021 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:58:54,021 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:58:54,022 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:58:54,024 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:58:54,025 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:58:54,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:58:54,025 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:58:54,026 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:58:54,026 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:58:54,078 INFO ]: Repository-Root is: /tmp [2018-06-24 21:58:54,095 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:58:54,101 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:58:54,102 INFO ]: Initializing SmtParser... [2018-06-24 21:58:54,102 INFO ]: SmtParser initialized [2018-06-24 21:58:54,103 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/quant/libc__strncmp_2.smt2 [2018-06-24 21:58:54,104 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 21:58:54,187 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/quant/libc__strncmp_2.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@2953c71d [2018-06-24 21:58:54,481 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/quant/libc__strncmp_2.smt2 [2018-06-24 21:58:54,487 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:58:54,493 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:58:54,494 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:58:54,494 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:58:54,494 INFO ]: ChcToBoogie initialized [2018-06-24 21:58:54,497 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:58:54" (1/1) ... [2018-06-24 21:58:54,572 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54 Unit [2018-06-24 21:58:54,572 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:58:54,573 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:58:54,573 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:58:54,573 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:58:54,594 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (1/1) ... [2018-06-24 21:58:54,595 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (1/1) ... [2018-06-24 21:58:54,610 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (1/1) ... [2018-06-24 21:58:54,610 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (1/1) ... [2018-06-24 21:58:54,631 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (1/1) ... [2018-06-24 21:58:54,633 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (1/1) ... [2018-06-24 21:58:54,645 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (1/1) ... [2018-06-24 21:58:54,653 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:58:54,653 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:58:54,653 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:58:54,653 INFO ]: RCFGBuilder initialized [2018-06-24 21:58:54,654 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (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 21:58:54,690 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:58:54,690 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:58:54,690 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:58:54,690 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:58:54,690 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:58:54,690 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 21:58:55,165 INFO ]: Using library mode [2018-06-24 21:58:55,165 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:58:55 BoogieIcfgContainer [2018-06-24 21:58:55,165 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:58:55,166 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:58:55,166 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:58:55,167 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:58:55,168 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:58:55" (1/1) ... [2018-06-24 21:58:55,184 INFO ]: Initial Icfg 10 locations, 20 edges [2018-06-24 21:58:55,186 INFO ]: Using Remove infeasible edges [2018-06-24 21:58:55,186 INFO ]: Using Maximize final states [2018-06-24 21:58:55,187 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:58:55,187 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:58:55,188 INFO ]: Using Remove sink states [2018-06-24 21:58:55,189 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:58:55,189 INFO ]: Using Use SBE [2018-06-24 21:58:55,218 INFO ]: SBE split 11 edges [2018-06-24 21:58:55,231 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:58:55,232 INFO ]: 0 new accepting states [2018-06-24 21:58:55,584 INFO ]: Removed 21 edges and 2 locations by large block encoding [2018-06-24 21:58:55,586 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:58:55,588 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:58:55,588 INFO ]: 0 new accepting states [2018-06-24 21:58:55,588 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:58:55,588 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:58:55,588 INFO ]: Encoded RCFG 6 locations, 29 edges [2018-06-24 21:58:55,589 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:58:55 BasicIcfg [2018-06-24 21:58:55,589 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:58:55,591 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:58:55,591 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:58:55,594 INFO ]: TraceAbstraction initialized [2018-06-24 21:58:55,594 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:58:54" (1/4) ... [2018-06-24 21:58:55,595 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228adf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:58:55, skipping insertion in model container [2018-06-24 21:58:55,595 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:58:54" (2/4) ... [2018-06-24 21:58:55,596 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228adf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:58:55, skipping insertion in model container [2018-06-24 21:58:55,596 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:58:55" (3/4) ... [2018-06-24 21:58:55,596 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228adf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:58:55, skipping insertion in model container [2018-06-24 21:58:55,596 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:58:55" (4/4) ... [2018-06-24 21:58:55,597 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:58:55,608 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:58:55,616 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:58:55,653 INFO ]: Using default assertion order modulation [2018-06-24 21:58:55,653 INFO ]: Interprodecural is true [2018-06-24 21:58:55,653 INFO ]: Hoare is false [2018-06-24 21:58:55,653 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:58:55,653 INFO ]: Backedges is TWOTRACK [2018-06-24 21:58:55,653 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:58:55,653 INFO ]: Difference is false [2018-06-24 21:58:55,653 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:58:55,653 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:58:55,663 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:58:55,671 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:58:55,671 INFO ]: Found error trace [2018-06-24 21:58:55,672 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:58:55,673 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:58:55,678 INFO ]: Analyzing trace with hash 38311821, now seen corresponding path program 1 times [2018-06-24 21:58:55,680 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:58:55,681 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:58:55,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:58:55,717 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:58:55,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:58:55,771 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:58:55,886 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:58:55,887 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:58:55,888 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:58:55,889 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:58:55,904 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:58:55,905 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:58:55,907 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:58:56,304 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:58:56,304 INFO ]: Finished difference Result 7 states and 35 transitions. [2018-06-24 21:58:56,305 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:58:56,306 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:58:56,306 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:58:56,315 INFO ]: With dead ends: 7 [2018-06-24 21:58:56,315 INFO ]: Without dead ends: 7 [2018-06-24 21:58:56,317 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 21:58:56,332 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:58:56,345 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:58:56,346 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:58:56,347 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2018-06-24 21:58:56,348 INFO ]: Start accepts. Automaton has 7 states and 35 transitions. Word has length 5 [2018-06-24 21:58:56,348 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:58:56,348 INFO ]: Abstraction has 7 states and 35 transitions. [2018-06-24 21:58:56,348 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:58:56,348 INFO ]: Start isEmpty. Operand 7 states and 35 transitions. [2018-06-24 21:58:56,349 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:58:56,349 INFO ]: Found error trace [2018-06-24 21:58:56,349 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:58:56,349 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:58:56,349 INFO ]: Analyzing trace with hash 38341612, now seen corresponding path program 1 times [2018-06-24 21:58:56,349 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:58:56,349 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:58:56,350 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:58:56,350 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:58:56,350 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:58:56,364 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:58:56,398 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:58:56,398 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:58:56,398 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:58:56,399 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:58:56,399 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:58:56,399 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:58:56,399 INFO ]: Start difference. First operand 7 states and 35 transitions. Second operand 3 states. [2018-06-24 21:58:56,697 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:58:56,698 INFO ]: Finished difference Result 8 states and 38 transitions. [2018-06-24 21:58:56,698 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:58:56,698 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:58:56,699 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:58:56,699 INFO ]: With dead ends: 8 [2018-06-24 21:58:56,699 INFO ]: Without dead ends: 7 [2018-06-24 21:58:56,700 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 21:58:56,700 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:58:56,701 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:58:56,701 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:58:56,702 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 33 transitions. [2018-06-24 21:58:56,702 INFO ]: Start accepts. Automaton has 7 states and 33 transitions. Word has length 5 [2018-06-24 21:58:56,702 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:58:56,702 INFO ]: Abstraction has 7 states and 33 transitions. [2018-06-24 21:58:56,702 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:58:56,702 INFO ]: Start isEmpty. Operand 7 states and 33 transitions. [2018-06-24 21:58:56,702 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:58:56,702 INFO ]: Found error trace [2018-06-24 21:58:56,702 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:58:56,702 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:58:56,703 INFO ]: Analyzing trace with hash 38371403, now seen corresponding path program 1 times [2018-06-24 21:58:56,703 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:58:56,703 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:58:56,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:58:56,703 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:58:56,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:58:56,723 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:58:56,789 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:58:56,789 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:58:56,789 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:58:56,789 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:58:56,789 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:58:56,789 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:58:56,789 INFO ]: Start difference. First operand 7 states and 33 transitions. Second operand 3 states. [2018-06-24 21:58:57,108 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:58:57,108 INFO ]: Finished difference Result 8 states and 39 transitions. [2018-06-24 21:58:57,109 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:58:57,109 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:58:57,109 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:58:57,109 INFO ]: With dead ends: 8 [2018-06-24 21:58:57,109 INFO ]: Without dead ends: 8 [2018-06-24 21:58:57,109 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 [2018-06-24 21:58:57,109 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 21:58:57,112 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 21:58:57,112 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 21:58:57,112 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2018-06-24 21:58:57,112 INFO ]: Start accepts. Automaton has 8 states and 39 transitions. Word has length 5 [2018-06-24 21:58:57,112 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:58:57,112 INFO ]: Abstraction has 8 states and 39 transitions. [2018-06-24 21:58:57,112 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:58:57,112 INFO ]: Start isEmpty. Operand 8 states and 39 transitions. [2018-06-24 21:58:57,113 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:58:57,113 INFO ]: Found error trace [2018-06-24 21:58:57,113 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:58:57,113 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:58:57,113 INFO ]: Analyzing trace with hash 38430985, now seen corresponding path program 1 times [2018-06-24 21:58:57,113 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:58:57,113 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:58:57,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:58:57,114 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:58:57,114 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:58:57,128 INFO ]: Conjunction of SSA is sat [2018-06-24 21:58:57,130 INFO ]: Counterexample might be feasible [2018-06-24 21:58:57,140 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:58:57,141 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:58:57 BasicIcfg [2018-06-24 21:58:57,141 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:58:57,142 INFO ]: Toolchain (without parser) took 2654.53 ms. Allocated memory was 309.9 MB in the beginning and 328.7 MB in the end (delta: 18.9 MB). Free memory was 261.2 MB in the beginning and 272.6 MB in the end (delta: -11.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 3.6 GB. [2018-06-24 21:58:57,144 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:58:57,145 INFO ]: ChcToBoogie took 78.52 ms. Allocated memory is still 309.9 MB. Free memory was 261.2 MB in the beginning and 258.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:58:57,145 INFO ]: Boogie Preprocessor took 79.86 ms. Allocated memory is still 309.9 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:58:57,146 INFO ]: RCFGBuilder took 512.42 ms. Allocated memory is still 309.9 MB. Free memory was 256.3 MB in the beginning and 238.2 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:58:57,146 INFO ]: BlockEncodingV2 took 422.68 ms. Allocated memory is still 309.9 MB. Free memory was 238.2 MB in the beginning and 222.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:58:57,147 INFO ]: TraceAbstraction took 1550.36 ms. Allocated memory was 309.9 MB in the beginning and 328.7 MB in the end (delta: 18.9 MB). Free memory was 221.2 MB in the beginning and 272.6 MB in the end (delta: -51.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:58:57,153 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 20 edges - StatisticsResult: Encoded RCFG 6 locations, 29 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 78.52 ms. Allocated memory is still 309.9 MB. Free memory was 261.2 MB in the beginning and 258.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 79.86 ms. Allocated memory is still 309.9 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 512.42 ms. Allocated memory is still 309.9 MB. Free memory was 256.3 MB in the beginning and 238.2 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 422.68 ms. Allocated memory is still 309.9 MB. Free memory was 238.2 MB in the beginning and 222.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1550.36 ms. Allocated memory was 309.9 MB in the beginning and 328.7 MB in the end (delta: 18.9 MB). Free memory was 221.2 MB in the beginning and 272.6 MB in the end (delta: -51.5 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] assume (((((if hbv_False_1_Int >= 0 then hbv_False_1_Int else -hbv_False_1_Int) > (if 0 >= 0 then 0 else -0) && hbv_False_2_Array_Int_Int[hbv_False_3_Int] == 0) && !(hbv_False_5_Array_Int_Int[hbv_False_7_Int] != 0)) && !(hbv_False_7_Int == hbv_False_9_Int)) && !(hbv_False_2_Array_Int_Int[hbv_False_4_Int] == hbv_False_5_Array_Int_Int[hbv_False_4_Int] && hbv_False_2_Array_Int_Int[hbv_False_3_Int] - hbv_False_2_Array_Int_Int[hbv_False_6_Int] == 0)) && !(hbv_False_5_Array_Int_Int[hbv_False_7_Int] - hbv_False_5_Array_Int_Int[hbv_False_8_Int] != 0); [L0] hhv_INV_MAIN_42_0_Int, hhv_INV_MAIN_42_1_Int, hhv_INV_MAIN_42_2_Int, hhv_INV_MAIN_42_3_Int, hhv_INV_MAIN_42_4_Int, hhv_INV_MAIN_42_5_Int, hhv_INV_MAIN_42_6_Int, hhv_INV_MAIN_42_7_Int, hhv_INV_MAIN_42_8_Int, hhv_INV_MAIN_42_9_Int, hhv_INV_MAIN_42_10_Int, hhv_INV_MAIN_42_11_Int := hbv_False_10_Int, hbv_False_11_Int, hbv_False_1_Int, hbv_False_3_Int, hbv_False_6_Int, skolem3(hbv_False_10_Int, hbv_False_8_Int, hbv_False_11_Int, hbv_False_1_Int, hbv_False_9_Int, hbv_False_7_Int, hbv_False_6_Int, hbv_False_3_Int, hbv_False_2_Array_Int_Int, hbv_False_5_Array_Int_Int), hbv_False_2_Array_Int_Int[skolem3(hbv_False_10_Int, hbv_False_8_Int, hbv_False_11_Int, hbv_False_1_Int, hbv_False_9_Int, hbv_False_7_Int, hbv_False_6_Int, hbv_False_3_Int, hbv_False_2_Array_Int_Int, hbv_False_5_Array_Int_Int)], hbv_False_7_Int, hbv_False_9_Int, hbv_False_8_Int, skolem4(hbv_False_10_Int, hbv_False_8_Int, hbv_False_11_Int, hbv_False_1_Int, hbv_False_9_Int, hbv_False_7_Int, hbv_False_6_Int, hbv_False_3_Int, hbv_False_2_Array_Int_Int, hbv_False_5_Array_Int_Int), hbv_False_5_Array_Int_Int[skolem4(hbv_False_10_Int, hbv_False_8_Int, hbv_False_11_Int, hbv_False_1_Int, hbv_False_9_Int, hbv_False_7_Int, hbv_False_6_Int, hbv_False_3_Int, hbv_False_2_Array_Int_Int, hbv_False_5_Array_Int_Int)]; [L0] havoc hbv_False_4_Int, hbv_False_5_Array_Int_Int, hbv_False_7_Int, hbv_False_8_Int, hbv_False_3_Int, hbv_False_1_Int, hbv_False_10_Int, hbv_False_11_Int, hbv_False_9_Int, hbv_False_2_Array_Int_Int, hbv_False_6_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 94 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=3, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/libc__strncmp_2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-58-57-173.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/libc__strncmp_2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-58-57-173.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/libc__strncmp_2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-58-57-173.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/libc__strncmp_2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-58-57-173.csv Received shutdown request...