java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:15:15,645 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:15:15,647 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:15:15,660 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:15:15,661 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:15:15,662 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:15:15,663 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:15:15,668 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:15:15,670 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:15:15,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:15:15,673 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:15:15,674 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:15:15,675 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:15:15,676 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:15:15,677 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:15:15,680 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:15:15,680 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:15:15,682 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:15:15,693 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:15:15,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:15:15,695 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:15:15,696 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:15:15,698 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:15:15,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:15:15,699 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:15:15,700 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:15:15,700 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:15:15,701 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:15:15,702 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:15:15,702 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:15:15,703 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:15:15,703 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:15:15,703 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:15:15,704 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:15:15,704 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:15:15,705 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:15:15,705 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:15:15,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:15:15,725 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:15:15,726 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:15:15,726 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:15:15,727 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:15:15,727 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:15:15,727 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:15:15,727 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:15:15,728 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:15:15,728 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:15:15,728 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:15:15,728 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:15:15,728 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:15:15,728 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:15:15,729 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:15:15,729 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:15:15,729 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:15:15,729 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:15:15,729 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:15:15,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:15:15,730 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:15:15,731 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:15:15,731 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:15:15,793 INFO ]: Repository-Root is: /tmp [2018-06-26 18:15:15,811 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:15:15,816 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:15:15,818 INFO ]: Initializing SmtParser... [2018-06-26 18:15:15,818 INFO ]: SmtParser initialized [2018-06-26 18:15:15,818 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 [2018-06-26 18:15:15,819 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-26 18:15:15,904 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 unknown [2018-06-26 18:15:16,169 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 [2018-06-26 18:15:16,174 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:15:16,180 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:15:16,180 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:15:16,180 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:15:16,180 INFO ]: ChcToBoogie initialized [2018-06-26 18:15:16,183 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,242 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16 Unit [2018-06-26 18:15:16,242 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:15:16,243 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:15:16,243 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:15:16,243 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:15:16,264 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,264 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,270 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,270 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,274 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,285 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,286 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,288 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:15:16,293 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:15:16,293 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:15:16,293 INFO ]: RCFGBuilder initialized [2018-06-26 18:15:16,294 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:15:16,312 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:15:16,312 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:15:16,312 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:15:16,312 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:15:16,312 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:15:16,312 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 18:15:16,714 INFO ]: Using library mode [2018-06-26 18:15:16,714 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:16 BoogieIcfgContainer [2018-06-26 18:15:16,714 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:15:16,715 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:15:16,715 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:15:16,716 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:15:16,716 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:16" (1/1) ... [2018-06-26 18:15:16,734 INFO ]: Initial Icfg 29 locations, 40 edges [2018-06-26 18:15:16,735 INFO ]: Using Remove infeasible edges [2018-06-26 18:15:16,735 INFO ]: Using Maximize final states [2018-06-26 18:15:16,736 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:15:16,736 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:15:16,738 INFO ]: Using Remove sink states [2018-06-26 18:15:16,739 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:15:16,739 INFO ]: Using Use SBE [2018-06-26 18:15:16,759 INFO ]: SBE split 1 edges [2018-06-26 18:15:16,764 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:15:16,766 INFO ]: 0 new accepting states [2018-06-26 18:15:16,937 INFO ]: Removed 31 edges and 11 locations by large block encoding [2018-06-26 18:15:16,939 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:15:16,940 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:15:16,940 INFO ]: 0 new accepting states [2018-06-26 18:15:16,941 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:15:16,943 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:15:16,943 INFO ]: Encoded RCFG 16 locations, 28 edges [2018-06-26 18:15:16,944 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:15:16 BasicIcfg [2018-06-26 18:15:16,944 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:15:16,945 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:15:16,945 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:15:16,950 INFO ]: TraceAbstraction initialized [2018-06-26 18:15:16,951 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:15:16" (1/4) ... [2018-06-26 18:15:16,952 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e308fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:15:16, skipping insertion in model container [2018-06-26 18:15:16,952 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:15:16" (2/4) ... [2018-06-26 18:15:16,952 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e308fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:15:16, skipping insertion in model container [2018-06-26 18:15:16,952 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:15:16" (3/4) ... [2018-06-26 18:15:16,952 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e308fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:15:16, skipping insertion in model container [2018-06-26 18:15:16,952 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:15:16" (4/4) ... [2018-06-26 18:15:16,954 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:15:16,964 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:15:16,972 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:15:17,025 INFO ]: Using default assertion order modulation [2018-06-26 18:15:17,026 INFO ]: Interprodecural is true [2018-06-26 18:15:17,026 INFO ]: Hoare is false [2018-06-26 18:15:17,026 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:15:17,026 INFO ]: Backedges is TWOTRACK [2018-06-26 18:15:17,026 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:15:17,026 INFO ]: Difference is false [2018-06-26 18:15:17,026 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:15:17,026 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:15:17,039 INFO ]: Start isEmpty. Operand 16 states. [2018-06-26 18:15:17,055 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:15:17,056 INFO ]: Found error trace [2018-06-26 18:15:17,056 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:15:17,057 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:17,062 INFO ]: Analyzing trace with hash 1169889935, now seen corresponding path program 1 times [2018-06-26 18:15:17,064 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:17,065 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:17,105 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:17,105 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:17,105 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:17,151 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:17,221 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:17,223 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:17,223 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:15:17,224 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:17,235 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:17,235 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:17,237 INFO ]: Start difference. First operand 16 states. Second operand 3 states. [2018-06-26 18:15:17,491 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:17,491 INFO ]: Finished difference Result 25 states and 46 transitions. [2018-06-26 18:15:17,491 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:17,492 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:15:17,492 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:17,502 INFO ]: With dead ends: 25 [2018-06-26 18:15:17,502 INFO ]: Without dead ends: 25 [2018-06-26 18:15:17,504 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:17,519 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-26 18:15:17,541 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-26 18:15:17,542 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-26 18:15:17,544 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 46 transitions. [2018-06-26 18:15:17,545 INFO ]: Start accepts. Automaton has 25 states and 46 transitions. Word has length 6 [2018-06-26 18:15:17,546 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:17,546 INFO ]: Abstraction has 25 states and 46 transitions. [2018-06-26 18:15:17,546 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:17,546 INFO ]: Start isEmpty. Operand 25 states and 46 transitions. [2018-06-26 18:15:17,548 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:15:17,548 INFO ]: Found error trace [2018-06-26 18:15:17,548 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:15:17,548 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:17,549 INFO ]: Analyzing trace with hash 1172660498, now seen corresponding path program 1 times [2018-06-26 18:15:17,549 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:17,549 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:17,550 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:17,550 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:17,550 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:17,561 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:17,617 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:17,617 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:17,618 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:15:17,619 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:15:17,619 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:15:17,619 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:15:17,619 INFO ]: Start difference. First operand 25 states and 46 transitions. Second operand 4 states. [2018-06-26 18:15:17,704 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:17,705 INFO ]: Finished difference Result 49 states and 101 transitions. [2018-06-26 18:15:17,705 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 18:15:17,705 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 18:15:17,705 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:17,709 INFO ]: With dead ends: 49 [2018-06-26 18:15:17,709 INFO ]: Without dead ends: 49 [2018-06-26 18:15:17,710 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:15:17,710 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-26 18:15:17,724 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 29. [2018-06-26 18:15:17,724 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-26 18:15:17,726 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 52 transitions. [2018-06-26 18:15:17,726 INFO ]: Start accepts. Automaton has 29 states and 52 transitions. Word has length 6 [2018-06-26 18:15:17,726 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:17,726 INFO ]: Abstraction has 29 states and 52 transitions. [2018-06-26 18:15:17,726 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:15:17,726 INFO ]: Start isEmpty. Operand 29 states and 52 transitions. [2018-06-26 18:15:17,728 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:15:17,728 INFO ]: Found error trace [2018-06-26 18:15:17,728 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:15:17,728 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:17,728 INFO ]: Analyzing trace with hash 1173584019, now seen corresponding path program 1 times [2018-06-26 18:15:17,728 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:17,728 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:17,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:17,729 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:17,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:17,738 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:17,766 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:15:17,766 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:17,766 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:15:17,766 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:17,767 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:17,767 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:17,767 INFO ]: Start difference. First operand 29 states and 52 transitions. Second operand 3 states. [2018-06-26 18:15:17,844 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:17,844 INFO ]: Finished difference Result 32 states and 50 transitions. [2018-06-26 18:15:17,846 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:17,846 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:15:17,846 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:17,848 INFO ]: With dead ends: 32 [2018-06-26 18:15:17,848 INFO ]: Without dead ends: 28 [2018-06-26 18:15:17,848 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:17,848 INFO ]: Start minimizeSevpa. Operand 28 states. [2018-06-26 18:15:17,858 INFO ]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-06-26 18:15:17,858 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-26 18:15:17,859 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2018-06-26 18:15:17,859 INFO ]: Start accepts. Automaton has 28 states and 46 transitions. Word has length 6 [2018-06-26 18:15:17,859 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:17,859 INFO ]: Abstraction has 28 states and 46 transitions. [2018-06-26 18:15:17,859 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:17,859 INFO ]: Start isEmpty. Operand 28 states and 46 transitions. [2018-06-26 18:15:17,863 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 18:15:17,863 INFO ]: Found error trace [2018-06-26 18:15:17,863 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:17,863 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:17,863 INFO ]: Analyzing trace with hash -360879347, now seen corresponding path program 1 times [2018-06-26 18:15:17,863 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:17,863 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:17,864 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:17,864 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:17,864 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:17,884 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:17,925 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:15:17,925 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:15:17,925 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:15:17,925 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:17,925 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:17,925 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:17,926 INFO ]: Start difference. First operand 28 states and 46 transitions. Second operand 3 states. [2018-06-26 18:15:17,992 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:17,992 INFO ]: Finished difference Result 38 states and 64 transitions. [2018-06-26 18:15:17,992 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:17,992 INFO ]: Start accepts. Automaton has 3 states. Word has length 11 [2018-06-26 18:15:17,992 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:17,994 INFO ]: With dead ends: 38 [2018-06-26 18:15:17,994 INFO ]: Without dead ends: 38 [2018-06-26 18:15:17,994 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:17,994 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-26 18:15:18,000 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-06-26 18:15:18,000 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-26 18:15:18,002 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2018-06-26 18:15:18,002 INFO ]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 11 [2018-06-26 18:15:18,002 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:18,002 INFO ]: Abstraction has 38 states and 64 transitions. [2018-06-26 18:15:18,002 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:18,002 INFO ]: Start isEmpty. Operand 38 states and 64 transitions. [2018-06-26 18:15:18,005 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-26 18:15:18,005 INFO ]: Found error trace [2018-06-26 18:15:18,005 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:18,005 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:18,005 INFO ]: Analyzing trace with hash -625890499, now seen corresponding path program 1 times [2018-06-26 18:15:18,005 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:18,005 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:18,005 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:18,005 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:18,005 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:18,051 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:18,161 INFO ]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-26 18:15:18,161 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:15:18,161 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:15:18,171 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:18,227 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:18,237 INFO ]: Computing forward predicates... [2018-06-26 18:15:18,327 INFO ]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-26 18:15:18,361 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:15:18,361 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2018-06-26 18:15:18,362 INFO ]: Interpolant automaton has 9 states [2018-06-26 18:15:18,362 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-26 18:15:18,362 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-26 18:15:18,362 INFO ]: Start difference. First operand 38 states and 64 transitions. Second operand 9 states. [2018-06-26 18:15:20,468 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:20,468 INFO ]: Finished difference Result 125 states and 369 transitions. [2018-06-26 18:15:20,468 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-26 18:15:20,468 INFO ]: Start accepts. Automaton has 9 states. Word has length 17 [2018-06-26 18:15:20,468 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:20,477 INFO ]: With dead ends: 125 [2018-06-26 18:15:20,477 INFO ]: Without dead ends: 115 [2018-06-26 18:15:20,478 INFO ]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2018-06-26 18:15:20,478 INFO ]: Start minimizeSevpa. Operand 115 states. [2018-06-26 18:15:20,542 INFO ]: Finished minimizeSevpa. Reduced states from 115 to 54. [2018-06-26 18:15:20,542 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-26 18:15:20,543 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2018-06-26 18:15:20,544 INFO ]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2018-06-26 18:15:20,548 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:20,548 INFO ]: Abstraction has 54 states and 98 transitions. [2018-06-26 18:15:20,548 INFO ]: Interpolant automaton has 9 states. [2018-06-26 18:15:20,548 INFO ]: Start isEmpty. Operand 54 states and 98 transitions. [2018-06-26 18:15:20,561 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-26 18:15:20,561 INFO ]: Found error trace [2018-06-26 18:15:20,561 INFO ]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:20,561 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:20,561 INFO ]: Analyzing trace with hash -605036766, now seen corresponding path program 1 times [2018-06-26 18:15:20,561 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:20,561 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:20,562 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:20,562 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:20,562 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:20,571 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:15:20,571 INFO ]: Advancing trace checker [2018-06-26 18:15:20,571 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:15:20,586 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:20,621 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:20,624 INFO ]: Computing forward predicates... [2018-06-26 18:15:20,688 INFO ]: Checked inductivity of 25 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-26 18:15:20,709 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:15:20,710 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-06-26 18:15:20,710 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:15:20,710 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:15:20,710 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:15:20,710 INFO ]: Start difference. First operand 54 states and 98 transitions. Second operand 6 states. [2018-06-26 18:15:20,883 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:20,883 INFO ]: Finished difference Result 79 states and 167 transitions. [2018-06-26 18:15:20,885 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-26 18:15:20,885 INFO ]: Start accepts. Automaton has 6 states. Word has length 23 [2018-06-26 18:15:20,885 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:20,887 INFO ]: With dead ends: 79 [2018-06-26 18:15:20,887 INFO ]: Without dead ends: 64 [2018-06-26 18:15:20,887 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-06-26 18:15:20,887 INFO ]: Start minimizeSevpa. Operand 64 states. [2018-06-26 18:15:20,896 INFO ]: Finished minimizeSevpa. Reduced states from 64 to 54. [2018-06-26 18:15:20,897 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-26 18:15:20,898 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 95 transitions. [2018-06-26 18:15:20,898 INFO ]: Start accepts. Automaton has 54 states and 95 transitions. Word has length 23 [2018-06-26 18:15:20,898 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:20,898 INFO ]: Abstraction has 54 states and 95 transitions. [2018-06-26 18:15:20,898 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:15:20,898 INFO ]: Start isEmpty. Operand 54 states and 95 transitions. [2018-06-26 18:15:20,901 INFO ]: Finished isEmpty. Found accepting run of length 47 [2018-06-26 18:15:20,901 INFO ]: Found error trace [2018-06-26 18:15:20,901 INFO ]: trace histogram [8, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:15:20,901 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:15:20,901 INFO ]: Analyzing trace with hash 235810359, now seen corresponding path program 1 times [2018-06-26 18:15:20,902 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:15:20,902 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:15:20,902 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:20,902 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:15:20,902 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:15:20,916 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:21,011 INFO ]: Checked inductivity of 111 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-06-26 18:15:21,011 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:15:21,011 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-26 18:15:21,026 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:15:21,107 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:15:21,119 INFO ]: Computing forward predicates... [2018-06-26 18:15:21,125 INFO ]: Checked inductivity of 111 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-06-26 18:15:21,159 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:15:21,159 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-26 18:15:21,160 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:15:21,160 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:15:21,160 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:21,160 INFO ]: Start difference. First operand 54 states and 95 transitions. Second operand 3 states. [2018-06-26 18:15:21,199 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:15:21,199 INFO ]: Finished difference Result 38 states and 60 transitions. [2018-06-26 18:15:21,231 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:15:21,231 INFO ]: Start accepts. Automaton has 3 states. Word has length 46 [2018-06-26 18:15:21,231 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:15:21,231 INFO ]: With dead ends: 38 [2018-06-26 18:15:21,231 INFO ]: Without dead ends: 0 [2018-06-26 18:15:21,231 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:15:21,231 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:15:21,231 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:15:21,231 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:15:21,231 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:15:21,231 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2018-06-26 18:15:21,231 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:15:21,231 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:15:21,231 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:15:21,232 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:15:21,232 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:15:21,233 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:15:21,235 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:15:21 BasicIcfg [2018-06-26 18:15:21,235 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:15:21,235 INFO ]: Toolchain (without parser) took 5060.73 ms. Allocated memory was 308.8 MB in the beginning and 341.8 MB in the end (delta: 33.0 MB). Free memory was 261.2 MB in the beginning and 207.7 MB in the end (delta: 53.4 MB). Peak memory consumption was 86.5 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:21,237 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:15:21,238 INFO ]: ChcToBoogie took 62.45 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:21,238 INFO ]: Boogie Preprocessor took 44.57 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:21,239 INFO ]: RCFGBuilder took 421.22 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 245.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:21,239 INFO ]: BlockEncodingV2 took 229.05 ms. Allocated memory is still 308.8 MB. Free memory was 245.2 MB in the beginning and 237.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:21,241 INFO ]: TraceAbstraction took 4289.71 ms. Allocated memory was 308.8 MB in the beginning and 341.8 MB in the end (delta: 33.0 MB). Free memory was 237.2 MB in the beginning and 207.7 MB in the end (delta: 29.4 MB). Peak memory consumption was 62.5 MB. Max. memory is 3.6 GB. [2018-06-26 18:15:21,249 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 29 locations, 40 edges - StatisticsResult: Encoded RCFG 16 locations, 28 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.45 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 44.57 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 421.22 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 245.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 229.05 ms. Allocated memory is still 308.8 MB. Free memory was 245.2 MB in the beginning and 237.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4289.71 ms. Allocated memory was 308.8 MB in the beginning and 341.8 MB in the end (delta: 33.0 MB). Free memory was 237.2 MB in the beginning and 207.7 MB in the end (delta: 29.4 MB). Peak memory consumption was 62.5 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, 16 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 7 OverallIterations, 8 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 329 SDtfs, 118 SDslu, 621 SDs, 0 SdLazy, 880 SolverSat, 223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 91 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 7328 SizeOfPredicates, 10 NumberOfNonLiveVariables, 798 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 238/270 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/a-dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-15-21-267.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/a-dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-15-21-267.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/a-dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-15-21-267.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/a-dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-15-21-267.csv Received shutdown request...