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/termination/indirectHO03.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:31:26,897 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:31:26,899 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:31:26,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:31:26,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:31:26,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:31:26,917 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:31:26,919 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:31:26,921 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:31:26,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:31:26,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:31:26,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:31:26,924 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:31:26,925 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:31:26,927 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:31:26,928 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:31:26,929 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:31:26,930 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:31:26,940 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:31:26,941 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:31:26,942 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:31:26,943 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:31:26,949 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:31:26,949 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:31:26,949 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:31:26,950 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:31:26,951 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:31:26,952 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:31:26,954 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:31:26,955 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:31:26,955 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:31:26,956 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:31:26,956 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:31:26,956 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:31:26,959 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:31:26,960 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:31:26,960 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:31:26,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:31:26,982 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:31:26,985 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:31:26,986 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:31:26,986 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:31:26,987 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:31:26,987 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:31:26,987 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:31:26,987 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:31:26,987 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:31:26,987 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:31:26,988 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:31:26,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:31:26,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:31:26,988 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:31:26,988 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:31:26,988 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:31:26,989 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:31:26,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:31:26,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:31:26,990 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:31:26,991 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:31:26,992 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:31:27,039 INFO ]: Repository-Root is: /tmp [2018-06-26 18:31:27,055 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:31:27,061 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:31:27,063 INFO ]: Initializing SmtParser... [2018-06-26 18:31:27,063 INFO ]: SmtParser initialized [2018-06-26 18:31:27,063 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/indirectHO03.smt2 [2018-06-26 18:31:27,065 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 18:31:27,159 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/indirectHO03.smt2 unknown [2018-06-26 18:31:27,586 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/indirectHO03.smt2 [2018-06-26 18:31:27,592 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:31:27,597 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:31:27,597 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:31:27,598 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:31:27,598 INFO ]: ChcToBoogie initialized [2018-06-26 18:31:27,601 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:31:27" (1/1) ... [2018-06-26 18:31:27,676 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27 Unit [2018-06-26 18:31:27,676 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:31:27,677 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:31:27,677 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:31:27,677 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:31:27,699 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (1/1) ... [2018-06-26 18:31:27,699 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (1/1) ... [2018-06-26 18:31:27,708 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (1/1) ... [2018-06-26 18:31:27,709 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (1/1) ... [2018-06-26 18:31:27,724 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (1/1) ... [2018-06-26 18:31:27,726 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (1/1) ... [2018-06-26 18:31:27,727 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (1/1) ... [2018-06-26 18:31:27,730 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:31:27,738 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:31:27,738 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:31:27,738 INFO ]: RCFGBuilder initialized [2018-06-26 18:31:27,739 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (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 18:31:27,757 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:31:27,757 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:31:27,757 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:31:27,757 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:31:27,757 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:31:27,757 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 18:31:28,281 INFO ]: Using library mode [2018-06-26 18:31:28,282 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:31:28 BoogieIcfgContainer [2018-06-26 18:31:28,282 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:31:28,282 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:31:28,282 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:31:28,283 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:31:28,284 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:31:28" (1/1) ... [2018-06-26 18:31:28,302 INFO ]: Initial Icfg 31 locations, 42 edges [2018-06-26 18:31:28,303 INFO ]: Using Remove infeasible edges [2018-06-26 18:31:28,304 INFO ]: Using Maximize final states [2018-06-26 18:31:28,305 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:31:28,305 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:31:28,308 INFO ]: Using Remove sink states [2018-06-26 18:31:28,309 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:31:28,309 INFO ]: Using Use SBE [2018-06-26 18:31:28,316 INFO ]: SBE split 0 edges [2018-06-26 18:31:28,329 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-26 18:31:28,330 INFO ]: 0 new accepting states [2018-06-26 18:31:28,722 INFO ]: Removed 38 edges and 13 locations by large block encoding [2018-06-26 18:31:28,724 INFO ]: Removed 1 edges and 1 locations by removing sink states [2018-06-26 18:31:28,728 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:31:28,728 INFO ]: 0 new accepting states [2018-06-26 18:31:28,728 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:31:28,728 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:31:28,729 INFO ]: Encoded RCFG 15 locations, 24 edges [2018-06-26 18:31:28,729 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:31:28 BasicIcfg [2018-06-26 18:31:28,729 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:31:28,731 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:31:28,731 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:31:28,735 INFO ]: TraceAbstraction initialized [2018-06-26 18:31:28,736 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:31:27" (1/4) ... [2018-06-26 18:31:28,737 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4425d2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:31:28, skipping insertion in model container [2018-06-26 18:31:28,738 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:27" (2/4) ... [2018-06-26 18:31:28,738 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4425d2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:31:28, skipping insertion in model container [2018-06-26 18:31:28,738 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:31:28" (3/4) ... [2018-06-26 18:31:28,738 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4425d2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:31:28, skipping insertion in model container [2018-06-26 18:31:28,739 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:31:28" (4/4) ... [2018-06-26 18:31:28,741 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:31:28,753 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:31:28,770 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:31:28,816 INFO ]: Using default assertion order modulation [2018-06-26 18:31:28,817 INFO ]: Interprodecural is true [2018-06-26 18:31:28,817 INFO ]: Hoare is false [2018-06-26 18:31:28,817 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:31:28,817 INFO ]: Backedges is TWOTRACK [2018-06-26 18:31:28,817 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:31:28,817 INFO ]: Difference is false [2018-06-26 18:31:28,817 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:31:28,817 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:31:28,831 INFO ]: Start isEmpty. Operand 15 states. [2018-06-26 18:31:28,855 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:31:28,855 INFO ]: Found error trace [2018-06-26 18:31:28,856 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:31:28,856 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:28,862 INFO ]: Analyzing trace with hash 35903303, now seen corresponding path program 1 times [2018-06-26 18:31:28,865 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:28,865 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:28,897 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:28,897 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:28,897 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:28,931 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:31:28,931 INFO ]: Advancing trace checker [2018-06-26 18:31:28,931 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 (exit command is (exit), workingDir is null) [2018-06-26 18:31:28,954 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:31:29,026 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:29,047 INFO ]: Computing forward predicates... [2018-06-26 18:31:29,101 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:31:29,122 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:31:29,122 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:31:29,123 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:31:29,133 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:31:29,133 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:31:29,136 INFO ]: Start difference. First operand 15 states. Second operand 3 states. [2018-06-26 18:31:29,293 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:29,293 INFO ]: Finished difference Result 24 states and 45 transitions. [2018-06-26 18:31:29,294 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:31:29,295 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:31:29,295 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:29,303 INFO ]: With dead ends: 24 [2018-06-26 18:31:29,303 INFO ]: Without dead ends: 14 [2018-06-26 18:31:29,305 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:31:29,317 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-26 18:31:29,347 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-26 18:31:29,348 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-26 18:31:29,350 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 23 transitions. [2018-06-26 18:31:29,352 INFO ]: Start accepts. Automaton has 14 states and 23 transitions. Word has length 5 [2018-06-26 18:31:29,352 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:29,352 INFO ]: Abstraction has 14 states and 23 transitions. [2018-06-26 18:31:29,352 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:31:29,352 INFO ]: Start isEmpty. Operand 14 states and 23 transitions. [2018-06-26 18:31:29,355 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:31:29,355 INFO ]: Found error trace [2018-06-26 18:31:29,355 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:31:29,356 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:29,356 INFO ]: Analyzing trace with hash 36082049, now seen corresponding path program 1 times [2018-06-26 18:31:29,356 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:29,356 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:29,357 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:29,357 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:29,357 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:29,362 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:31:29,362 INFO ]: Advancing trace checker [2018-06-26 18:31:29,362 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) [2018-06-26 18:31:29,379 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:31:29,425 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:29,427 INFO ]: Computing forward predicates... [2018-06-26 18:31:29,482 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:31:29,506 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:31:29,506 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:31:29,507 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:31:29,507 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:31:29,507 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:31:29,507 INFO ]: Start difference. First operand 14 states and 23 transitions. Second operand 3 states. [2018-06-26 18:31:29,618 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:29,618 INFO ]: Finished difference Result 17 states and 28 transitions. [2018-06-26 18:31:29,620 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:31:29,620 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:31:29,620 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:29,621 INFO ]: With dead ends: 17 [2018-06-26 18:31:29,621 INFO ]: Without dead ends: 17 [2018-06-26 18:31:29,622 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:31:29,622 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-26 18:31:29,625 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 15. [2018-06-26 18:31:29,625 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-26 18:31:29,628 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2018-06-26 18:31:29,628 INFO ]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 5 [2018-06-26 18:31:29,628 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:29,628 INFO ]: Abstraction has 15 states and 24 transitions. [2018-06-26 18:31:29,628 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:31:29,628 INFO ]: Start isEmpty. Operand 15 states and 24 transitions. [2018-06-26 18:31:29,629 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 18:31:29,629 INFO ]: Found error trace [2018-06-26 18:31:29,629 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:31:29,629 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:29,630 INFO ]: Analyzing trace with hash 489075080, now seen corresponding path program 1 times [2018-06-26 18:31:29,630 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:29,630 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:29,630 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:29,630 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:29,630 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:29,641 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:31:29,641 INFO ]: Advancing trace checker [2018-06-26 18:31:29,641 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 (exit command is (exit), workingDir is null) [2018-06-26 18:31:29,658 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:31:29,715 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:29,717 INFO ]: Computing forward predicates... [2018-06-26 18:31:29,777 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:31:29,809 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:31:29,809 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:31:29,809 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:31:29,809 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:31:29,809 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:31:29,810 INFO ]: Start difference. First operand 15 states and 24 transitions. Second operand 3 states. [2018-06-26 18:31:29,916 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:29,916 INFO ]: Finished difference Result 23 states and 46 transitions. [2018-06-26 18:31:29,916 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:31:29,916 INFO ]: Start accepts. Automaton has 3 states. Word has length 10 [2018-06-26 18:31:29,917 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:29,918 INFO ]: With dead ends: 23 [2018-06-26 18:31:29,918 INFO ]: Without dead ends: 23 [2018-06-26 18:31:29,918 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 8 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 18:31:29,918 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-26 18:31:29,924 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 15. [2018-06-26 18:31:29,924 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-26 18:31:29,925 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2018-06-26 18:31:29,925 INFO ]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 10 [2018-06-26 18:31:29,925 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:29,925 INFO ]: Abstraction has 15 states and 24 transitions. [2018-06-26 18:31:29,925 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:31:29,926 INFO ]: Start isEmpty. Operand 15 states and 24 transitions. [2018-06-26 18:31:29,926 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 18:31:29,926 INFO ]: Found error trace [2018-06-26 18:31:29,927 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:31:29,927 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:29,927 INFO ]: Analyzing trace with hash -1491012914, now seen corresponding path program 1 times [2018-06-26 18:31:29,927 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:29,927 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:29,927 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:29,927 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:29,927 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:29,934 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:31:29,934 INFO ]: Advancing trace checker [2018-06-26 18:31:29,934 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:31:29,947 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:30,018 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:30,021 INFO ]: Computing forward predicates... [2018-06-26 18:31:30,173 INFO ]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:31:30,211 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:31:30,211 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:31:30,212 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:31:30,212 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:31:30,212 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:31:30,212 INFO ]: Start difference. First operand 15 states and 24 transitions. Second operand 4 states. [2018-06-26 18:31:30,340 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:30,340 INFO ]: Finished difference Result 23 states and 40 transitions. [2018-06-26 18:31:30,340 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 18:31:30,340 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-26 18:31:30,340 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:30,341 INFO ]: With dead ends: 23 [2018-06-26 18:31:30,341 INFO ]: Without dead ends: 23 [2018-06-26 18:31:30,342 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:31:30,342 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-26 18:31:30,348 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-06-26 18:31:30,348 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-26 18:31:30,349 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2018-06-26 18:31:30,349 INFO ]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 11 [2018-06-26 18:31:30,349 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:30,349 INFO ]: Abstraction has 19 states and 31 transitions. [2018-06-26 18:31:30,349 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:31:30,349 INFO ]: Start isEmpty. Operand 19 states and 31 transitions. [2018-06-26 18:31:30,350 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 18:31:30,350 INFO ]: Found error trace [2018-06-26 18:31:30,350 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:31:30,350 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:30,351 INFO ]: Analyzing trace with hash -603509233, now seen corresponding path program 1 times [2018-06-26 18:31:30,351 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:30,351 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:30,351 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:30,351 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:30,351 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:30,358 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:31:30,358 INFO ]: Advancing trace checker [2018-06-26 18:31:30,358 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:31:30,371 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:30,438 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:30,441 INFO ]: Computing forward predicates... [2018-06-26 18:31:30,498 INFO ]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:31:30,529 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:31:30,529 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:31:30,529 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:31:30,530 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:31:30,530 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:31:30,530 INFO ]: Start difference. First operand 19 states and 31 transitions. Second operand 3 states. [2018-06-26 18:31:30,723 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:30,723 INFO ]: Finished difference Result 29 states and 47 transitions. [2018-06-26 18:31:30,724 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:31:30,724 INFO ]: Start accepts. Automaton has 3 states. Word has length 11 [2018-06-26 18:31:30,724 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:30,725 INFO ]: With dead ends: 29 [2018-06-26 18:31:30,725 INFO ]: Without dead ends: 29 [2018-06-26 18:31:30,725 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 9 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 18:31:30,725 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-26 18:31:30,730 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 21. [2018-06-26 18:31:30,730 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-26 18:31:30,730 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2018-06-26 18:31:30,730 INFO ]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 11 [2018-06-26 18:31:30,731 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:30,731 INFO ]: Abstraction has 21 states and 31 transitions. [2018-06-26 18:31:30,731 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:31:30,731 INFO ]: Start isEmpty. Operand 21 states and 31 transitions. [2018-06-26 18:31:30,731 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-26 18:31:30,731 INFO ]: Found error trace [2018-06-26 18:31:30,731 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:31:30,732 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:30,732 INFO ]: Analyzing trace with hash 1550045591, now seen corresponding path program 1 times [2018-06-26 18:31:30,732 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:30,732 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:30,732 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:30,732 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:30,732 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:30,739 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:31:30,739 INFO ]: Advancing trace checker [2018-06-26 18:31:30,739 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-26 18:31:30,754 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:31:30,865 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:30,870 INFO ]: Computing forward predicates... [2018-06-26 18:31:31,090 INFO ]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:31:31,112 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:31:31,112 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-06-26 18:31:31,112 INFO ]: Interpolant automaton has 7 states [2018-06-26 18:31:31,112 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 18:31:31,112 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:31:31,112 INFO ]: Start difference. First operand 21 states and 31 transitions. Second operand 7 states. [2018-06-26 18:31:31,573 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:31,573 INFO ]: Finished difference Result 42 states and 70 transitions. [2018-06-26 18:31:31,574 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-26 18:31:31,574 INFO ]: Start accepts. Automaton has 7 states. Word has length 16 [2018-06-26 18:31:31,574 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:31,575 INFO ]: With dead ends: 42 [2018-06-26 18:31:31,575 INFO ]: Without dead ends: 29 [2018-06-26 18:31:31,575 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-06-26 18:31:31,575 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-26 18:31:31,579 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 21. [2018-06-26 18:31:31,580 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-26 18:31:31,580 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2018-06-26 18:31:31,580 INFO ]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 16 [2018-06-26 18:31:31,580 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:31,580 INFO ]: Abstraction has 21 states and 29 transitions. [2018-06-26 18:31:31,580 INFO ]: Interpolant automaton has 7 states. [2018-06-26 18:31:31,580 INFO ]: Start isEmpty. Operand 21 states and 29 transitions. [2018-06-26 18:31:31,581 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-26 18:31:31,581 INFO ]: Found error trace [2018-06-26 18:31:31,581 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:31:31,581 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:31,581 INFO ]: Analyzing trace with hash 1353532086, now seen corresponding path program 1 times [2018-06-26 18:31:31,581 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:31,581 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:31,582 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:31,582 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:31,582 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:31,589 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:31:31,589 INFO ]: Advancing trace checker [2018-06-26 18:31:31,589 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:31:31,610 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:31,697 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:31,701 INFO ]: Computing forward predicates... [2018-06-26 18:31:31,826 INFO ]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:31:31,847 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:31:31,847 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-06-26 18:31:31,847 INFO ]: Interpolant automaton has 7 states [2018-06-26 18:31:31,847 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 18:31:31,847 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:31:31,847 INFO ]: Start difference. First operand 21 states and 29 transitions. Second operand 7 states. [2018-06-26 18:31:32,053 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:32,054 INFO ]: Finished difference Result 57 states and 113 transitions. [2018-06-26 18:31:32,054 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-26 18:31:32,054 INFO ]: Start accepts. Automaton has 7 states. Word has length 16 [2018-06-26 18:31:32,054 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:32,055 INFO ]: With dead ends: 57 [2018-06-26 18:31:32,055 INFO ]: Without dead ends: 51 [2018-06-26 18:31:32,056 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-06-26 18:31:32,056 INFO ]: Start minimizeSevpa. Operand 51 states. [2018-06-26 18:31:32,070 INFO ]: Finished minimizeSevpa. Reduced states from 51 to 28. [2018-06-26 18:31:32,070 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-26 18:31:32,071 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 41 transitions. [2018-06-26 18:31:32,071 INFO ]: Start accepts. Automaton has 28 states and 41 transitions. Word has length 16 [2018-06-26 18:31:32,071 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:32,071 INFO ]: Abstraction has 28 states and 41 transitions. [2018-06-26 18:31:32,071 INFO ]: Interpolant automaton has 7 states. [2018-06-26 18:31:32,072 INFO ]: Start isEmpty. Operand 28 states and 41 transitions. [2018-06-26 18:31:32,073 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-26 18:31:32,073 INFO ]: Found error trace [2018-06-26 18:31:32,073 INFO ]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-06-26 18:31:32,073 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:32,073 INFO ]: Analyzing trace with hash -743603129, now seen corresponding path program 2 times [2018-06-26 18:31:32,073 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:32,073 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:32,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:32,074 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:32,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:32,082 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:31:32,082 INFO ]: Advancing trace checker [2018-06-26 18:31:32,082 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:31:32,091 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 18:31:32,206 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 18:31:32,206 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:32,211 INFO ]: Computing forward predicates... [2018-06-26 18:31:32,247 INFO ]: Checked inductivity of 45 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-26 18:31:32,266 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:31:32,267 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-06-26 18:31:32,267 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:31:32,267 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:31:32,267 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:31:32,267 INFO ]: Start difference. First operand 28 states and 41 transitions. Second operand 6 states. [2018-06-26 18:31:32,357 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:32,357 INFO ]: Finished difference Result 22 states and 30 transitions. [2018-06-26 18:31:32,357 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-26 18:31:32,357 INFO ]: Start accepts. Automaton has 6 states. Word has length 27 [2018-06-26 18:31:32,358 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:32,358 INFO ]: With dead ends: 22 [2018-06-26 18:31:32,358 INFO ]: Without dead ends: 0 [2018-06-26 18:31:32,358 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-26 18:31:32,358 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:31:32,358 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:31:32,358 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:31:32,358 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:31:32,358 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-06-26 18:31:32,358 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:32,358 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:31:32,358 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:31:32,358 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:31:32,358 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:31:32,360 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:31:32,362 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:31:32 BasicIcfg [2018-06-26 18:31:32,362 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:31:32,363 INFO ]: Toolchain (without parser) took 4770.78 ms. Allocated memory was 309.3 MB in the beginning and 345.5 MB in the end (delta: 36.2 MB). Free memory was 252.6 MB in the beginning and 186.0 MB in the end (delta: 66.6 MB). Peak memory consumption was 102.8 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:32,364 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:31:32,365 INFO ]: ChcToBoogie took 78.97 ms. Allocated memory is still 309.3 MB. Free memory was 252.6 MB in the beginning and 250.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:32,365 INFO ]: Boogie Preprocessor took 52.71 ms. Allocated memory is still 309.3 MB. Free memory was 250.6 MB in the beginning and 248.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:32,365 INFO ]: RCFGBuilder took 543.76 ms. Allocated memory is still 309.3 MB. Free memory was 248.6 MB in the beginning and 230.5 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:32,366 INFO ]: BlockEncodingV2 took 446.78 ms. Allocated memory is still 309.3 MB. Free memory was 230.5 MB in the beginning and 210.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:32,366 INFO ]: TraceAbstraction took 3631.17 ms. Allocated memory was 309.3 MB in the beginning and 345.5 MB in the end (delta: 36.2 MB). Free memory was 209.5 MB in the beginning and 186.0 MB in the end (delta: 23.5 MB). Peak memory consumption was 59.6 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:32,369 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 31 locations, 42 edges - StatisticsResult: Encoded RCFG 15 locations, 24 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 78.97 ms. Allocated memory is still 309.3 MB. Free memory was 252.6 MB in the beginning and 250.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.71 ms. Allocated memory is still 309.3 MB. Free memory was 250.6 MB in the beginning and 248.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 543.76 ms. Allocated memory is still 309.3 MB. Free memory was 248.6 MB in the beginning and 230.5 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 446.78 ms. Allocated memory is still 309.3 MB. Free memory was 230.5 MB in the beginning and 210.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3631.17 ms. Allocated memory was 309.3 MB in the beginning and 345.5 MB in the end (delta: 36.2 MB). Free memory was 209.5 MB in the beginning and 186.0 MB in the end (delta: 23.5 MB). Peak memory consumption was 59.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 143 SDtfs, 62 SDslu, 155 SDs, 0 SdLazy, 323 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=7, 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, 8 MinimizatonAttempts, 53 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 3161 SizeOfPredicates, 35 NumberOfNonLiveVariables, 3552 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 66/82 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/indirectHO03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-31-32-379.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirectHO03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-31-32-379.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirectHO03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-31-32-379.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirectHO03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-31-32-379.csv Received shutdown request...