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/indirect01.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:28:35,899 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:28:35,901 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:28:35,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:28:35,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:28:35,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:28:35,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:28:35,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:28:35,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:28:35,922 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:28:35,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:28:35,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:28:35,924 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:28:35,925 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:28:35,928 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:28:35,929 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:28:35,931 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:28:35,940 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:28:35,942 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:28:35,945 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:28:35,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:28:35,948 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-24 21:28:35,953 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:28:35,954 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:28:35,955 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:28:35,958 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:28:35,959 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:28:35,960 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:28:35,960 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:28:35,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:28:35,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:28:35,977 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:28:35,978 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:28:35,979 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:28:35,979 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:28:35,979 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:28:35,979 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:28:35,979 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:28:35,980 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:28:35,980 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:28:35,980 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:28:35,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:28:35,980 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:28:35,980 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:28:35,981 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:28:35,981 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:28:35,981 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:28:35,981 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:28:35,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:28:35,981 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:28:35,983 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:28:35,983 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:28:36,032 INFO ]: Repository-Root is: /tmp [2018-06-24 21:28:36,049 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:28:36,058 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:28:36,059 INFO ]: Initializing SmtParser... [2018-06-24 21:28:36,059 INFO ]: SmtParser initialized [2018-06-24 21:28:36,060 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/indirect01.smt2 [2018-06-24 21:28:36,062 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:28:36,152 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/indirect01.smt2 unknown [2018-06-24 21:28:36,815 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/indirect01.smt2 [2018-06-24 21:28:36,820 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:28:36,825 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:28:36,826 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:28:36,826 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:28:36,826 INFO ]: ChcToBoogie initialized [2018-06-24 21:28:36,829 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:28:36" (1/1) ... [2018-06-24 21:28:36,917 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36 Unit [2018-06-24 21:28:36,917 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:28:36,918 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:28:36,918 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:28:36,918 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:28:36,939 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (1/1) ... [2018-06-24 21:28:36,939 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (1/1) ... [2018-06-24 21:28:36,950 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (1/1) ... [2018-06-24 21:28:36,950 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (1/1) ... [2018-06-24 21:28:36,961 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (1/1) ... [2018-06-24 21:28:36,963 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (1/1) ... [2018-06-24 21:28:36,965 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (1/1) ... [2018-06-24 21:28:36,968 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:28:36,969 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:28:36,969 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:28:36,969 INFO ]: RCFGBuilder initialized [2018-06-24 21:28:36,976 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:28:36,988 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:28:36,989 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:28:36,989 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:28:36,989 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:28:36,989 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:28:36,989 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:28:37,693 INFO ]: Using library mode [2018-06-24 21:28:37,694 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:37 BoogieIcfgContainer [2018-06-24 21:28:37,694 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:28:37,694 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:28:37,694 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:28:37,695 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:28:37,696 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:37" (1/1) ... [2018-06-24 21:28:37,715 INFO ]: Initial Icfg 31 locations, 46 edges [2018-06-24 21:28:37,720 INFO ]: Using Remove infeasible edges [2018-06-24 21:28:37,720 INFO ]: Using Maximize final states [2018-06-24 21:28:37,721 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:28:37,721 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:28:37,723 INFO ]: Using Remove sink states [2018-06-24 21:28:37,724 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:28:37,724 INFO ]: Using Use SBE [2018-06-24 21:28:37,773 INFO ]: SBE split 3 edges [2018-06-24 21:28:37,779 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-24 21:28:37,787 INFO ]: 0 new accepting states [2018-06-24 21:28:38,261 INFO ]: Removed 36 edges and 9 locations by large block encoding [2018-06-24 21:28:38,263 INFO ]: Removed 3 edges and 2 locations by removing sink states [2018-06-24 21:28:38,264 INFO ]: Removed 2 edges and 0 locations because of local infeasibility [2018-06-24 21:28:38,264 INFO ]: 0 new accepting states [2018-06-24 21:28:38,266 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:28:38,267 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:28:38,267 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:28:38,267 INFO ]: 0 new accepting states [2018-06-24 21:28:38,267 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:28:38,268 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:28:38,268 INFO ]: Encoded RCFG 18 locations, 34 edges [2018-06-24 21:28:38,268 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:28:38 BasicIcfg [2018-06-24 21:28:38,268 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:28:38,269 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:28:38,270 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:28:38,274 INFO ]: TraceAbstraction initialized [2018-06-24 21:28:38,274 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:28:36" (1/4) ... [2018-06-24 21:28:38,276 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed7afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:28:38, skipping insertion in model container [2018-06-24 21:28:38,276 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:36" (2/4) ... [2018-06-24 21:28:38,276 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed7afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:28:38, skipping insertion in model container [2018-06-24 21:28:38,276 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:37" (3/4) ... [2018-06-24 21:28:38,276 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed7afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:28:38, skipping insertion in model container [2018-06-24 21:28:38,276 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:28:38" (4/4) ... [2018-06-24 21:28:38,278 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:28:38,288 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:28:38,296 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:28:38,350 INFO ]: Using default assertion order modulation [2018-06-24 21:28:38,350 INFO ]: Interprodecural is true [2018-06-24 21:28:38,350 INFO ]: Hoare is false [2018-06-24 21:28:38,350 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:28:38,350 INFO ]: Backedges is TWOTRACK [2018-06-24 21:28:38,350 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:28:38,350 INFO ]: Difference is false [2018-06-24 21:28:38,350 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:28:38,350 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:28:38,362 INFO ]: Start isEmpty. Operand 18 states. [2018-06-24 21:28:38,373 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:28:38,373 INFO ]: Found error trace [2018-06-24 21:28:38,376 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:28:38,376 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:38,380 INFO ]: Analyzing trace with hash 40773622, now seen corresponding path program 1 times [2018-06-24 21:28:38,381 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:38,382 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:38,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:38,414 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:38,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:38,448 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:28:38,448 INFO ]: Advancing trace checker [2018-06-24 21:28:38,448 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) [2018-06-24 21:28:38,461 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:28:38,504 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:38,511 INFO ]: Computing forward predicates... [2018-06-24 21:28:38,609 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:28:38,644 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:38,644 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:28:38,646 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:28:38,658 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:28:38,659 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:38,660 INFO ]: Start difference. First operand 18 states. Second operand 3 states. [2018-06-24 21:28:39,075 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:39,075 INFO ]: Finished difference Result 32 states and 64 transitions. [2018-06-24 21:28:39,076 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:28:39,077 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:28:39,077 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:39,086 INFO ]: With dead ends: 32 [2018-06-24 21:28:39,087 INFO ]: Without dead ends: 27 [2018-06-24 21:28:39,091 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 [2018-06-24 21:28:39,109 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-24 21:28:39,135 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-24 21:28:39,138 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-24 21:28:39,139 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 49 transitions. [2018-06-24 21:28:39,140 INFO ]: Start accepts. Automaton has 27 states and 49 transitions. Word has length 5 [2018-06-24 21:28:39,143 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:39,143 INFO ]: Abstraction has 27 states and 49 transitions. [2018-06-24 21:28:39,143 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:28:39,143 INFO ]: Start isEmpty. Operand 27 states and 49 transitions. [2018-06-24 21:28:39,145 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:28:39,145 INFO ]: Found error trace [2018-06-24 21:28:39,145 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:28:39,145 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:39,145 INFO ]: Analyzing trace with hash 41101323, now seen corresponding path program 1 times [2018-06-24 21:28:39,145 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:39,145 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:39,147 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:39,147 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:39,147 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:39,154 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:28:39,154 INFO ]: Advancing trace checker [2018-06-24 21:28:39,154 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 [2018-06-24 21:28:39,169 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:39,221 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:39,222 INFO ]: Computing forward predicates... [2018-06-24 21:28:39,291 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:28:39,324 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:39,324 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:28:39,325 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:28:39,325 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:28:39,325 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:39,326 INFO ]: Start difference. First operand 27 states and 49 transitions. Second operand 3 states. [2018-06-24 21:28:39,532 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:39,532 INFO ]: Finished difference Result 47 states and 89 transitions. [2018-06-24 21:28:39,535 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:28:39,535 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:28:39,535 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:39,538 INFO ]: With dead ends: 47 [2018-06-24 21:28:39,538 INFO ]: Without dead ends: 47 [2018-06-24 21:28:39,541 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 [2018-06-24 21:28:39,542 INFO ]: Start minimizeSevpa. Operand 47 states. [2018-06-24 21:28:39,556 INFO ]: Finished minimizeSevpa. Reduced states from 47 to 29. [2018-06-24 21:28:39,556 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-24 21:28:39,560 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 59 transitions. [2018-06-24 21:28:39,560 INFO ]: Start accepts. Automaton has 29 states and 59 transitions. Word has length 5 [2018-06-24 21:28:39,560 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:39,560 INFO ]: Abstraction has 29 states and 59 transitions. [2018-06-24 21:28:39,560 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:28:39,560 INFO ]: Start isEmpty. Operand 29 states and 59 transitions. [2018-06-24 21:28:39,562 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:28:39,562 INFO ]: Found error trace [2018-06-24 21:28:39,562 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:28:39,563 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:39,566 INFO ]: Analyzing trace with hash 869276949, now seen corresponding path program 1 times [2018-06-24 21:28:39,566 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:39,566 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:39,566 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:39,566 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:39,566 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:39,585 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:28:39,585 INFO ]: Advancing trace checker [2018-06-24 21:28:39,585 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:28:39,606 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:39,702 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:39,707 INFO ]: Computing forward predicates... [2018-06-24 21:28:39,977 INFO ]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:28:40,015 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:40,015 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 21:28:40,015 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:28:40,015 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:28:40,015 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:28:40,015 INFO ]: Start difference. First operand 29 states and 59 transitions. Second operand 5 states. [2018-06-24 21:28:40,441 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:40,441 INFO ]: Finished difference Result 71 states and 171 transitions. [2018-06-24 21:28:40,442 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 21:28:40,442 INFO ]: Start accepts. Automaton has 5 states. Word has length 12 [2018-06-24 21:28:40,442 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:40,447 INFO ]: With dead ends: 71 [2018-06-24 21:28:40,447 INFO ]: Without dead ends: 50 [2018-06-24 21:28:40,447 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:28:40,447 INFO ]: Start minimizeSevpa. Operand 50 states. [2018-06-24 21:28:40,459 INFO ]: Finished minimizeSevpa. Reduced states from 50 to 31. [2018-06-24 21:28:40,459 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-24 21:28:40,460 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 72 transitions. [2018-06-24 21:28:40,460 INFO ]: Start accepts. Automaton has 31 states and 72 transitions. Word has length 12 [2018-06-24 21:28:40,460 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:40,460 INFO ]: Abstraction has 31 states and 72 transitions. [2018-06-24 21:28:40,460 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:28:40,460 INFO ]: Start isEmpty. Operand 31 states and 72 transitions. [2018-06-24 21:28:40,462 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:28:40,462 INFO ]: Found error trace [2018-06-24 21:28:40,462 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:28:40,462 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:40,463 INFO ]: Analyzing trace with hash 425987362, now seen corresponding path program 1 times [2018-06-24 21:28:40,463 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:40,463 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:40,463 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:40,463 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:40,463 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:40,470 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:28:40,470 INFO ]: Advancing trace checker [2018-06-24 21:28:40,470 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 [2018-06-24 21:28:40,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:40,554 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:40,557 INFO ]: Computing forward predicates... [2018-06-24 21:28:40,665 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:28:40,684 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:28:40,684 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-06-24 21:28:40,684 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:28:40,684 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:28:40,684 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:28:40,685 INFO ]: Start difference. First operand 31 states and 72 transitions. Second operand 5 states. [2018-06-24 21:28:40,791 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:40,791 INFO ]: Finished difference Result 37 states and 84 transitions. [2018-06-24 21:28:40,791 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:28:40,791 INFO ]: Start accepts. Automaton has 5 states. Word has length 12 [2018-06-24 21:28:40,791 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:40,791 INFO ]: With dead ends: 37 [2018-06-24 21:28:40,791 INFO ]: Without dead ends: 0 [2018-06-24 21:28:40,792 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:28:40,792 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:28:40,792 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:28:40,792 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:28:40,792 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:28:40,792 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-06-24 21:28:40,792 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:40,792 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:28:40,792 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:28:40,792 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:28:40,792 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:28:40,793 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:28:40,794 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:28:40 BasicIcfg [2018-06-24 21:28:40,795 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:28:40,795 INFO ]: Toolchain (without parser) took 3974.94 ms. Allocated memory was 301.5 MB in the beginning and 353.9 MB in the end (delta: 52.4 MB). Free memory was 224.0 MB in the beginning and 278.9 MB in the end (delta: -55.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:28:40,796 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 301.5 MB. Free memory is still 264.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:28:40,796 INFO ]: ChcToBoogie took 91.66 ms. Allocated memory is still 301.5 MB. Free memory was 224.0 MB in the beginning and 220.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:40,805 INFO ]: Boogie Preprocessor took 50.19 ms. Allocated memory is still 301.5 MB. Free memory is still 220.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:28:40,805 INFO ]: RCFGBuilder took 724.91 ms. Allocated memory is still 301.5 MB. Free memory was 218.0 MB in the beginning and 192.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:40,805 INFO ]: BlockEncodingV2 took 574.05 ms. Allocated memory was 301.5 MB in the beginning and 321.4 MB in the end (delta: 19.9 MB). Free memory was 192.0 MB in the beginning and 265.6 MB in the end (delta: -73.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:40,806 INFO ]: TraceAbstraction took 2525.08 ms. Allocated memory was 321.4 MB in the beginning and 353.9 MB in the end (delta: 32.5 MB). Free memory was 263.3 MB in the beginning and 278.9 MB in the end (delta: -15.6 MB). Peak memory consumption was 16.9 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:40,808 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 31 locations, 46 edges - StatisticsResult: Encoded RCFG 18 locations, 34 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 301.5 MB. Free memory is still 264.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 91.66 ms. Allocated memory is still 301.5 MB. Free memory was 224.0 MB in the beginning and 220.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 50.19 ms. Allocated memory is still 301.5 MB. Free memory is still 220.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 724.91 ms. Allocated memory is still 301.5 MB. Free memory was 218.0 MB in the beginning and 192.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 574.05 ms. Allocated memory was 301.5 MB in the beginning and 321.4 MB in the end (delta: 19.9 MB). Free memory was 192.0 MB in the beginning and 265.6 MB in the end (delta: -73.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2525.08 ms. Allocated memory was 321.4 MB in the beginning and 353.9 MB in the end (delta: 32.5 MB). Free memory was 263.3 MB in the beginning and 278.9 MB in the end (delta: -15.6 MB). Peak memory consumption was 16.9 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, 18 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 114 SDtfs, 73 SDslu, 106 SDs, 0 SdLazy, 180 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 37 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 544 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1302 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/10 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/indirect01.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-28-40-828.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirect01.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-28-40-828.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirect01.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-28-40-828.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirect01.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-28-40-828.csv Received shutdown request...