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/indirect03.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:28:42,981 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:28:42,984 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:28:42,995 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:28:42,996 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:28:42,997 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:28:42,998 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:28:43,000 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:28:43,002 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:28:43,003 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:28:43,004 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:28:43,007 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:28:43,008 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:28:43,010 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:28:43,010 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:28:43,014 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:28:43,015 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:28:43,029 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:28:43,030 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:28:43,031 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:28:43,032 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:28:43,034 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:28:43,035 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:28:43,035 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:28:43,036 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:28:43,041 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:28:43,042 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:28:43,043 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:28:43,044 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:28:43,045 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:28:43,050 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:28:43,050 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:28:43,051 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:28:43,051 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:28:43,052 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:28:43,052 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:28:43,078 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:28:43,081 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:28:43,082 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:28:43,082 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:28:43,083 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:28:43,083 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:28:43,083 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:28:43,083 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:28:43,084 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:28:43,084 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:28:43,084 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:28:43,084 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:28:43,084 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:28:43,085 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:28:43,086 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:28:43,086 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:28:43,086 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:28:43,086 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:28:43,086 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:28:43,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:28:43,087 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:28:43,088 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:28:43,088 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:28:43,134 INFO ]: Repository-Root is: /tmp [2018-06-24 21:28:43,151 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:28:43,154 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:28:43,155 INFO ]: Initializing SmtParser... [2018-06-24 21:28:43,156 INFO ]: SmtParser initialized [2018-06-24 21:28:43,157 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/indirect03.smt2 [2018-06-24 21:28:43,158 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 21:28:43,249 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/indirect03.smt2 unknown [2018-06-24 21:28:43,667 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/indirect03.smt2 [2018-06-24 21:28:43,671 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:28:43,677 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:28:43,678 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:28:43,678 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:28:43,678 INFO ]: ChcToBoogie initialized [2018-06-24 21:28:43,682 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:28:43" (1/1) ... [2018-06-24 21:28:43,791 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43 Unit [2018-06-24 21:28:43,791 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:28:43,791 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:28:43,791 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:28:43,791 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:28:43,812 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (1/1) ... [2018-06-24 21:28:43,812 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (1/1) ... [2018-06-24 21:28:43,820 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (1/1) ... [2018-06-24 21:28:43,821 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (1/1) ... [2018-06-24 21:28:43,826 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (1/1) ... [2018-06-24 21:28:43,831 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (1/1) ... [2018-06-24 21:28:43,832 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (1/1) ... [2018-06-24 21:28:43,834 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:28:43,835 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:28:43,835 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:28:43,835 INFO ]: RCFGBuilder initialized [2018-06-24 21:28:43,836 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (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 21:28:43,862 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:28:43,862 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:28:43,862 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:28:43,862 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:28:43,862 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:28:43,862 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 21:28:44,336 INFO ]: Using library mode [2018-06-24 21:28:44,336 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:44 BoogieIcfgContainer [2018-06-24 21:28:44,336 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:28:44,337 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:28:44,337 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:28:44,338 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:28:44,338 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:44" (1/1) ... [2018-06-24 21:28:44,357 INFO ]: Initial Icfg 31 locations, 42 edges [2018-06-24 21:28:44,359 INFO ]: Using Remove infeasible edges [2018-06-24 21:28:44,359 INFO ]: Using Maximize final states [2018-06-24 21:28:44,360 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:28:44,360 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:28:44,362 INFO ]: Using Remove sink states [2018-06-24 21:28:44,363 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:28:44,363 INFO ]: Using Use SBE [2018-06-24 21:28:44,373 INFO ]: SBE split 0 edges [2018-06-24 21:28:44,386 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-24 21:28:44,387 INFO ]: 0 new accepting states [2018-06-24 21:28:44,631 INFO ]: Removed 37 edges and 13 locations by large block encoding [2018-06-24 21:28:44,633 INFO ]: Removed 1 edges and 1 locations by removing sink states [2018-06-24 21:28:44,634 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:28:44,634 INFO ]: 0 new accepting states [2018-06-24 21:28:44,635 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:28:44,635 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:28:44,635 INFO ]: Encoded RCFG 15 locations, 24 edges [2018-06-24 21:28:44,636 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:28:44 BasicIcfg [2018-06-24 21:28:44,636 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:28:44,637 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:28:44,637 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:28:44,640 INFO ]: TraceAbstraction initialized [2018-06-24 21:28:44,641 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:28:43" (1/4) ... [2018-06-24 21:28:44,641 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188847bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:28:44, skipping insertion in model container [2018-06-24 21:28:44,641 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:43" (2/4) ... [2018-06-24 21:28:44,642 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188847bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:28:44, skipping insertion in model container [2018-06-24 21:28:44,642 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:44" (3/4) ... [2018-06-24 21:28:44,642 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188847bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:28:44, skipping insertion in model container [2018-06-24 21:28:44,642 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:28:44" (4/4) ... [2018-06-24 21:28:44,644 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:28:44,653 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:28:44,672 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:28:44,718 INFO ]: Using default assertion order modulation [2018-06-24 21:28:44,719 INFO ]: Interprodecural is true [2018-06-24 21:28:44,719 INFO ]: Hoare is false [2018-06-24 21:28:44,719 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:28:44,719 INFO ]: Backedges is TWOTRACK [2018-06-24 21:28:44,719 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:28:44,719 INFO ]: Difference is false [2018-06-24 21:28:44,719 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:28:44,719 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:28:44,727 INFO ]: Start isEmpty. Operand 15 states. [2018-06-24 21:28:44,742 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:28:44,742 INFO ]: Found error trace [2018-06-24 21:28:44,743 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:28:44,743 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:44,749 INFO ]: Analyzing trace with hash 37777253, now seen corresponding path program 1 times [2018-06-24 21:28:44,751 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:44,751 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:44,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:44,791 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:44,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:44,818 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:28:44,819 INFO ]: Advancing trace checker [2018-06-24 21:28:44,819 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 21:28:44,835 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:28:44,879 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:44,886 INFO ]: Computing forward predicates... [2018-06-24 21:28:44,918 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:28:44,938 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:44,939 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:28:44,940 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:28:44,950 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:28:44,950 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:44,952 INFO ]: Start difference. First operand 15 states. Second operand 3 states. [2018-06-24 21:28:45,143 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:45,143 INFO ]: Finished difference Result 26 states and 43 transitions. [2018-06-24 21:28:45,144 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:28:45,145 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:28:45,145 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:45,153 INFO ]: With dead ends: 26 [2018-06-24 21:28:45,153 INFO ]: Without dead ends: 16 [2018-06-24 21:28:45,155 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 21:28:45,168 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-24 21:28:45,186 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-24 21:28:45,188 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-24 21:28:45,189 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 25 transitions. [2018-06-24 21:28:45,190 INFO ]: Start accepts. Automaton has 16 states and 25 transitions. Word has length 5 [2018-06-24 21:28:45,191 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:45,191 INFO ]: Abstraction has 16 states and 25 transitions. [2018-06-24 21:28:45,191 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:28:45,191 INFO ]: Start isEmpty. Operand 16 states and 25 transitions. [2018-06-24 21:28:45,195 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:28:45,195 INFO ]: Found error trace [2018-06-24 21:28:45,195 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:28:45,196 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:45,196 INFO ]: Analyzing trace with hash 37807044, now seen corresponding path program 1 times [2018-06-24 21:28:45,196 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:45,196 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:45,197 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:45,197 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:45,197 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:45,206 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:28:45,207 INFO ]: Advancing trace checker [2018-06-24 21:28:45,207 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) [2018-06-24 21:28:45,222 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:28:45,270 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:45,271 INFO ]: Computing forward predicates... [2018-06-24 21:28:45,324 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:28:45,354 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:45,354 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:28:45,355 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:28:45,355 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:28:45,355 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:45,356 INFO ]: Start difference. First operand 16 states and 25 transitions. Second operand 3 states. [2018-06-24 21:28:45,535 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:45,535 INFO ]: Finished difference Result 23 states and 38 transitions. [2018-06-24 21:28:45,535 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:28:45,535 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:28:45,535 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:45,537 INFO ]: With dead ends: 23 [2018-06-24 21:28:45,537 INFO ]: Without dead ends: 23 [2018-06-24 21:28:45,538 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 21:28:45,538 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-24 21:28:45,544 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-24 21:28:45,544 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-24 21:28:45,545 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2018-06-24 21:28:45,545 INFO ]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2018-06-24 21:28:45,546 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:45,546 INFO ]: Abstraction has 23 states and 38 transitions. [2018-06-24 21:28:45,546 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:28:45,546 INFO ]: Start isEmpty. Operand 23 states and 38 transitions. [2018-06-24 21:28:45,546 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:28:45,546 INFO ]: Found error trace [2018-06-24 21:28:45,547 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:28:45,547 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:45,547 INFO ]: Analyzing trace with hash 37896417, now seen corresponding path program 1 times [2018-06-24 21:28:45,547 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:45,547 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:45,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:45,547 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:45,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:45,553 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:28:45,553 INFO ]: Advancing trace checker [2018-06-24 21:28:45,553 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 21:28:45,573 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:45,607 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:45,608 INFO ]: Computing forward predicates... [2018-06-24 21:28:45,657 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:28:45,689 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:45,689 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:28:45,689 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:28:45,689 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:28:45,689 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:45,689 INFO ]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2018-06-24 21:28:45,791 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:45,791 INFO ]: Finished difference Result 33 states and 54 transitions. [2018-06-24 21:28:45,793 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:28:45,793 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:28:45,793 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:45,795 INFO ]: With dead ends: 33 [2018-06-24 21:28:45,795 INFO ]: Without dead ends: 33 [2018-06-24 21:28:45,795 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 21:28:45,795 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-24 21:28:45,806 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-06-24 21:28:45,806 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-24 21:28:45,807 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 40 transitions. [2018-06-24 21:28:45,807 INFO ]: Start accepts. Automaton has 25 states and 40 transitions. Word has length 5 [2018-06-24 21:28:45,807 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:45,807 INFO ]: Abstraction has 25 states and 40 transitions. [2018-06-24 21:28:45,807 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:28:45,807 INFO ]: Start isEmpty. Operand 25 states and 40 transitions. [2018-06-24 21:28:45,811 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-24 21:28:45,811 INFO ]: Found error trace [2018-06-24 21:28:45,811 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:28:45,811 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:45,811 INFO ]: Analyzing trace with hash 1384307299, now seen corresponding path program 1 times [2018-06-24 21:28:45,811 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:45,811 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:45,812 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:45,812 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:45,812 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:45,823 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:28:45,824 INFO ]: Advancing trace checker [2018-06-24 21:28:45,824 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) [2018-06-24 21:28:45,839 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:28:45,938 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:45,942 INFO ]: Computing forward predicates... [2018-06-24 21:28:46,123 INFO ]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-24 21:28:46,148 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:28:46,148 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-06-24 21:28:46,148 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:28:46,149 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:28:46,149 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:28:46,149 INFO ]: Start difference. First operand 25 states and 40 transitions. Second operand 5 states. [2018-06-24 21:28:46,372 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:46,372 INFO ]: Finished difference Result 31 states and 51 transitions. [2018-06-24 21:28:46,372 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:28:46,372 INFO ]: Start accepts. Automaton has 5 states. Word has length 16 [2018-06-24 21:28:46,372 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:46,373 INFO ]: With dead ends: 31 [2018-06-24 21:28:46,373 INFO ]: Without dead ends: 0 [2018-06-24 21:28:46,373 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:28:46,373 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:28:46,373 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:28:46,373 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:28:46,373 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:28:46,373 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-06-24 21:28:46,373 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:46,373 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:28:46,373 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:28:46,373 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:28:46,373 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:28:46,375 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:28:46,376 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:28:46 BasicIcfg [2018-06-24 21:28:46,376 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:28:46,377 INFO ]: Toolchain (without parser) took 2705.45 ms. Allocated memory was 307.8 MB in the beginning and 327.7 MB in the end (delta: 19.9 MB). Free memory was 253.1 MB in the beginning and 235.4 MB in the end (delta: 17.7 MB). Peak memory consumption was 37.6 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:46,378 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:28:46,379 INFO ]: ChcToBoogie took 112.94 ms. Allocated memory is still 307.8 MB. Free memory was 252.1 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:46,379 INFO ]: Boogie Preprocessor took 43.20 ms. Allocated memory is still 307.8 MB. Free memory was 250.1 MB in the beginning and 248.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:46,379 INFO ]: RCFGBuilder took 501.49 ms. Allocated memory is still 307.8 MB. Free memory was 248.1 MB in the beginning and 230.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:46,380 INFO ]: BlockEncodingV2 took 298.83 ms. Allocated memory is still 307.8 MB. Free memory was 230.9 MB in the beginning and 211.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:46,380 INFO ]: TraceAbstraction took 1739.47 ms. Allocated memory was 307.8 MB in the beginning and 327.7 MB in the end (delta: 19.9 MB). Free memory was 211.9 MB in the beginning and 235.4 MB in the end (delta: -23.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:28:46,383 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 112.94 ms. Allocated memory is still 307.8 MB. Free memory was 252.1 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.20 ms. Allocated memory is still 307.8 MB. Free memory was 250.1 MB in the beginning and 248.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 501.49 ms. Allocated memory is still 307.8 MB. Free memory was 248.1 MB in the beginning and 230.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 298.83 ms. Allocated memory is still 307.8 MB. Free memory was 230.9 MB in the beginning and 211.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1739.47 ms. Allocated memory was 307.8 MB in the beginning and 327.7 MB in the end (delta: 19.9 MB). Free memory was 211.9 MB in the beginning and 235.4 MB in the end (delta: -23.5 MB). There was no memory consumed. 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, 1.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 83 SDtfs, 15 SDslu, 71 SDs, 0 SdLazy, 46 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 587 SizeOfPredicates, 15 NumberOfNonLiveVariables, 928 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 10/12 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/indirect03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-28-46-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirect03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-28-46-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirect03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-28-46-393.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/indirect03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-28-46-393.csv Received shutdown request...