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/eldarica-misc/LIA/HOLA/03.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:39:08,542 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:39:08,544 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:39:08,557 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:39:08,557 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:39:08,558 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:39:08,559 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:39:08,566 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:39:08,567 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:39:08,568 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:39:08,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:39:08,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:39:08,571 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:39:08,572 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:39:08,572 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:39:08,575 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:39:08,577 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:39:08,586 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:39:08,588 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:39:08,589 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:39:08,590 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:39:08,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:39:08,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:39:08,594 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:39:08,595 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:39:08,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:39:08,596 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:39:08,597 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:39:08,598 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:39:08,598 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:39:08,599 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:39:08,599 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:39:08,599 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:39:08,600 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:39:08,601 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:39:08,601 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:39:08,623 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:39:08,623 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:39:08,623 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:39:08,624 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:39:08,625 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:39:08,625 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:39:08,625 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:39:08,625 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:39:08,625 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:39:08,626 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:39:08,626 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:39:08,626 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:39:08,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:39:08,626 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:39:08,626 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:39:08,627 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:39:08,627 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:39:08,627 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:39:08,627 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:39:08,627 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:39:08,627 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:39:08,631 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:39:08,631 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:39:08,684 INFO ]: Repository-Root is: /tmp [2018-06-24 20:39:08,701 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:39:08,706 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:39:08,708 INFO ]: Initializing SmtParser... [2018-06-24 20:39:08,708 INFO ]: SmtParser initialized [2018-06-24 20:39:08,709 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/03.c.smt2 [2018-06-24 20:39:08,710 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 20:39:08,800 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/03.c.smt2 unknown [2018-06-24 20:39:09,254 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/03.c.smt2 [2018-06-24 20:39:09,266 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:39:09,281 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:39:09,282 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:39:09,282 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:39:09,282 INFO ]: ChcToBoogie initialized [2018-06-24 20:39:09,286 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:09" (1/1) ... [2018-06-24 20:39:09,376 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09 Unit [2018-06-24 20:39:09,377 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:39:09,378 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:39:09,378 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:39:09,378 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:39:09,397 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (1/1) ... [2018-06-24 20:39:09,397 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (1/1) ... [2018-06-24 20:39:09,406 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (1/1) ... [2018-06-24 20:39:09,406 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (1/1) ... [2018-06-24 20:39:09,412 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (1/1) ... [2018-06-24 20:39:09,421 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (1/1) ... [2018-06-24 20:39:09,423 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (1/1) ... [2018-06-24 20:39:09,433 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:39:09,433 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:39:09,433 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:39:09,433 INFO ]: RCFGBuilder initialized [2018-06-24 20:39:09,434 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (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 20:39:09,456 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:39:09,456 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:39:09,456 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:39:09,456 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:39:09,456 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:39:09,456 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 20:39:10,167 INFO ]: Using library mode [2018-06-24 20:39:10,167 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:10 BoogieIcfgContainer [2018-06-24 20:39:10,167 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:39:10,168 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:39:10,168 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:39:10,170 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:39:10,171 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:10" (1/1) ... [2018-06-24 20:39:10,191 INFO ]: Initial Icfg 42 locations, 44 edges [2018-06-24 20:39:10,193 INFO ]: Using Remove infeasible edges [2018-06-24 20:39:10,193 INFO ]: Using Maximize final states [2018-06-24 20:39:10,194 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:39:10,194 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:39:10,198 INFO ]: Using Remove sink states [2018-06-24 20:39:10,199 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:39:10,199 INFO ]: Using Use SBE [2018-06-24 20:39:10,214 INFO ]: SBE split 0 edges [2018-06-24 20:39:10,221 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:39:10,223 INFO ]: 0 new accepting states [2018-06-24 20:39:11,438 INFO ]: Removed 90 edges and 33 locations by large block encoding [2018-06-24 20:39:11,440 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:11,446 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:39:11,446 INFO ]: 0 new accepting states [2018-06-24 20:39:11,446 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:39:11,446 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:11,446 INFO ]: Encoded RCFG 7 locations, 11 edges [2018-06-24 20:39:11,446 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:11 BasicIcfg [2018-06-24 20:39:11,446 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:39:11,450 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:39:11,450 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:39:11,454 INFO ]: TraceAbstraction initialized [2018-06-24 20:39:11,454 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:09" (1/4) ... [2018-06-24 20:39:11,455 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750ebebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:39:11, skipping insertion in model container [2018-06-24 20:39:11,455 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:09" (2/4) ... [2018-06-24 20:39:11,455 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750ebebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:39:11, skipping insertion in model container [2018-06-24 20:39:11,456 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:10" (3/4) ... [2018-06-24 20:39:11,456 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750ebebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:11, skipping insertion in model container [2018-06-24 20:39:11,456 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:11" (4/4) ... [2018-06-24 20:39:11,458 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:39:11,467 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:39:11,474 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:39:11,518 INFO ]: Using default assertion order modulation [2018-06-24 20:39:11,518 INFO ]: Interprodecural is true [2018-06-24 20:39:11,518 INFO ]: Hoare is false [2018-06-24 20:39:11,518 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:39:11,518 INFO ]: Backedges is TWOTRACK [2018-06-24 20:39:11,518 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:39:11,519 INFO ]: Difference is false [2018-06-24 20:39:11,519 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:39:11,519 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:39:11,531 INFO ]: Start isEmpty. Operand 7 states. [2018-06-24 20:39:11,553 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:39:11,553 INFO ]: Found error trace [2018-06-24 20:39:11,554 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:39:11,554 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:11,560 INFO ]: Analyzing trace with hash 36681780, now seen corresponding path program 1 times [2018-06-24 20:39:11,562 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:11,562 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:11,607 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:11,607 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:11,607 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:11,708 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:11,849 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:11,851 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:11,851 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:11,853 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:11,869 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:11,869 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:11,871 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-24 20:39:12,027 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:12,027 INFO ]: Finished difference Result 10 states and 17 transitions. [2018-06-24 20:39:12,028 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:12,029 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:39:12,029 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:12,040 INFO ]: With dead ends: 10 [2018-06-24 20:39:12,040 INFO ]: Without dead ends: 10 [2018-06-24 20:39:12,042 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:12,059 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 20:39:12,077 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-24 20:39:12,078 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 20:39:12,079 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2018-06-24 20:39:12,080 INFO ]: Start accepts. Automaton has 8 states and 13 transitions. Word has length 5 [2018-06-24 20:39:12,080 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:12,080 INFO ]: Abstraction has 8 states and 13 transitions. [2018-06-24 20:39:12,080 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:12,080 INFO ]: Start isEmpty. Operand 8 states and 13 transitions. [2018-06-24 20:39:12,080 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:39:12,080 INFO ]: Found error trace [2018-06-24 20:39:12,080 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:39:12,081 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:12,081 INFO ]: Analyzing trace with hash 1136089805, now seen corresponding path program 1 times [2018-06-24 20:39:12,081 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:12,081 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:12,082 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:12,082 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:12,082 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:12,115 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:12,285 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:12,285 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:12,285 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 20:39:12,286 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:39:12,286 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:39:12,286 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:39:12,287 INFO ]: Start difference. First operand 8 states and 13 transitions. Second operand 4 states. [2018-06-24 20:39:12,468 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:12,468 INFO ]: Finished difference Result 11 states and 20 transitions. [2018-06-24 20:39:12,468 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:39:12,469 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 20:39:12,469 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:12,469 INFO ]: With dead ends: 11 [2018-06-24 20:39:12,469 INFO ]: Without dead ends: 11 [2018-06-24 20:39:12,470 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:12,470 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:39:12,472 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-24 20:39:12,472 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:39:12,472 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2018-06-24 20:39:12,472 INFO ]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 6 [2018-06-24 20:39:12,472 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:12,472 INFO ]: Abstraction has 9 states and 15 transitions. [2018-06-24 20:39:12,472 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:39:12,472 INFO ]: Start isEmpty. Operand 9 states and 15 transitions. [2018-06-24 20:39:12,472 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:39:12,473 INFO ]: Found error trace [2018-06-24 20:39:12,473 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:39:12,473 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:12,473 INFO ]: Analyzing trace with hash 1137012365, now seen corresponding path program 1 times [2018-06-24 20:39:12,473 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:12,473 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:12,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:12,474 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:12,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:12,512 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:12,661 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:12,661 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:12,661 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:39:12,668 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:12,783 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:12,794 INFO ]: Computing forward predicates... [2018-06-24 20:39:12,917 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:12,950 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 20:39:12,950 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 20:39:12,950 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:39:12,951 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:39:12,951 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:12,951 INFO ]: Start difference. First operand 9 states and 15 transitions. Second operand 5 states. [2018-06-24 20:39:13,176 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:13,176 INFO ]: Finished difference Result 12 states and 20 transitions. [2018-06-24 20:39:13,177 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:39:13,177 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 20:39:13,177 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:13,177 INFO ]: With dead ends: 12 [2018-06-24 20:39:13,177 INFO ]: Without dead ends: 12 [2018-06-24 20:39:13,178 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:39:13,178 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-24 20:39:13,179 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-24 20:39:13,179 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 20:39:13,180 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-24 20:39:13,180 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 6 [2018-06-24 20:39:13,180 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:13,180 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-24 20:39:13,180 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:39:13,180 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-24 20:39:13,180 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:39:13,180 INFO ]: Found error trace [2018-06-24 20:39:13,180 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:13,181 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:13,181 INFO ]: Analyzing trace with hash 858922772, now seen corresponding path program 1 times [2018-06-24 20:39:13,181 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:13,181 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:13,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:13,182 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:13,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:13,214 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:13,319 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:13,319 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:13,319 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:39:13,327 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:13,445 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:13,451 INFO ]: Computing forward predicates... [2018-06-24 20:39:13,480 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:13,504 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:39:13,504 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-24 20:39:13,505 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:39:13,505 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:39:13,506 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:13,506 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 5 states. [2018-06-24 20:39:13,599 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:13,599 INFO ]: Finished difference Result 7 states and 12 transitions. [2018-06-24 20:39:13,599 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:39:13,599 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-24 20:39:13,599 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:13,599 INFO ]: With dead ends: 7 [2018-06-24 20:39:13,599 INFO ]: Without dead ends: 0 [2018-06-24 20:39:13,599 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:39:13,599 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:39:13,599 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:39:13,599 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:39:13,599 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:39:13,599 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-24 20:39:13,600 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:13,600 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:39:13,600 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:39:13,600 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:39:13,600 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:39:13,602 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:39:13,603 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:13 BasicIcfg [2018-06-24 20:39:13,603 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:39:13,604 INFO ]: Toolchain (without parser) took 4337.55 ms. Allocated memory was 305.7 MB in the beginning and 361.2 MB in the end (delta: 55.6 MB). Free memory was 246.2 MB in the beginning and 213.9 MB in the end (delta: 32.2 MB). Peak memory consumption was 87.8 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:13,606 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:13,607 INFO ]: ChcToBoogie took 95.19 ms. Allocated memory is still 305.7 MB. Free memory was 246.2 MB in the beginning and 243.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:13,607 INFO ]: Boogie Preprocessor took 55.16 ms. Allocated memory is still 305.7 MB. Free memory was 243.2 MB in the beginning and 242.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 20:39:13,608 INFO ]: RCFGBuilder took 734.37 ms. Allocated memory is still 305.7 MB. Free memory was 242.2 MB in the beginning and 212.1 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:13,608 INFO ]: BlockEncodingV2 took 1278.57 ms. Allocated memory was 305.7 MB in the beginning and 324.5 MB in the end (delta: 18.9 MB). Free memory was 212.1 MB in the beginning and 185.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 45.7 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:13,609 INFO ]: TraceAbstraction took 2153.13 ms. Allocated memory was 324.5 MB in the beginning and 361.2 MB in the end (delta: 36.7 MB). Free memory was 185.2 MB in the beginning and 213.9 MB in the end (delta: -28.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:13,612 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 42 locations, 44 edges - StatisticsResult: Encoded RCFG 7 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 95.19 ms. Allocated memory is still 305.7 MB. Free memory was 246.2 MB in the beginning and 243.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 55.16 ms. Allocated memory is still 305.7 MB. Free memory was 243.2 MB in the beginning and 242.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 734.37 ms. Allocated memory is still 305.7 MB. Free memory was 242.2 MB in the beginning and 212.1 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1278.57 ms. Allocated memory was 305.7 MB in the beginning and 324.5 MB in the end (delta: 18.9 MB). Free memory was 212.1 MB in the beginning and 185.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 45.7 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2153.13 ms. Allocated memory was 324.5 MB in the beginning and 361.2 MB in the end (delta: 36.7 MB). Free memory was 185.2 MB in the beginning and 213.9 MB in the end (delta: -28.7 MB). Peak memory consumption was 8.0 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, 7 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 16 SDslu, 44 SDs, 0 SdLazy, 57 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 76 NumberOfNonLiveVariables, 1615 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 1/4 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/03.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-39-13-623.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-39-13-623.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-39-13-623.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/03.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-39-13-623.csv Received shutdown request...