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/07.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:40:35,418 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:40:35,420 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:40:35,433 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:40:35,433 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:40:35,434 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:40:35,435 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:40:35,441 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:40:35,443 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:40:35,444 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:40:35,445 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:40:35,446 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:40:35,446 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:40:35,447 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:40:35,448 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:40:35,449 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:40:35,450 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:40:35,452 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:40:35,454 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:40:35,455 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:40:35,457 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:40:35,458 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:40:35,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:40:35,461 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:40:35,461 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:40:35,462 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:40:35,463 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:40:35,464 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:40:35,464 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:40:35,466 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:40:35,466 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:40:35,466 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:40:35,467 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:40:35,467 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:40:35,468 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:40:35,468 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:40:35,469 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:40:35,483 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:40:35,484 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:40:35,484 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:40:35,484 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:40:35,485 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:40:35,485 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:40:35,485 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:40:35,486 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:40:35,486 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:40:35,486 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:40:35,486 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:40:35,486 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:40:35,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:40:35,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:40:35,487 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:40:35,487 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:40:35,487 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:40:35,488 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:40:35,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:40:35,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:40:35,488 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:40:35,490 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:40:35,490 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:40:35,537 INFO ]: Repository-Root is: /tmp [2018-06-26 17:40:35,558 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:40:35,562 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:40:35,564 INFO ]: Initializing SmtParser... [2018-06-26 17:40:35,564 INFO ]: SmtParser initialized [2018-06-26 17:40:35,565 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/07.c.smt2 [2018-06-26 17:40:35,567 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-26 17:40:35,664 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/07.c.smt2 unknown [2018-06-26 17:40:36,262 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/07.c.smt2 [2018-06-26 17:40:36,267 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:40:36,273 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:40:36,273 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:40:36,273 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:40:36,273 INFO ]: ChcToBoogie initialized [2018-06-26 17:40:36,277 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:40:36" (1/1) ... [2018-06-26 17:40:36,345 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36 Unit [2018-06-26 17:40:36,345 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:40:36,346 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:40:36,346 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:40:36,346 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:40:36,371 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (1/1) ... [2018-06-26 17:40:36,371 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (1/1) ... [2018-06-26 17:40:36,383 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (1/1) ... [2018-06-26 17:40:36,384 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (1/1) ... [2018-06-26 17:40:36,390 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (1/1) ... [2018-06-26 17:40:36,404 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (1/1) ... [2018-06-26 17:40:36,406 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (1/1) ... [2018-06-26 17:40:36,410 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:40:36,410 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:40:36,410 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:40:36,410 INFO ]: RCFGBuilder initialized [2018-06-26 17:40:36,411 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:40:36,432 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:40:36,432 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:40:36,432 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:40:36,432 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:40:36,432 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:40:36,432 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 17:40:37,170 INFO ]: Using library mode [2018-06-26 17:40:37,171 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:37 BoogieIcfgContainer [2018-06-26 17:40:37,171 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:40:37,171 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:40:37,171 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:40:37,172 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:40:37,175 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:37" (1/1) ... [2018-06-26 17:40:37,193 INFO ]: Initial Icfg 33 locations, 36 edges [2018-06-26 17:40:37,194 INFO ]: Using Remove infeasible edges [2018-06-26 17:40:37,195 INFO ]: Using Maximize final states [2018-06-26 17:40:37,195 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:40:37,195 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:40:37,197 INFO ]: Using Remove sink states [2018-06-26 17:40:37,198 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:40:37,198 INFO ]: Using Use SBE [2018-06-26 17:40:37,209 INFO ]: SBE split 0 edges [2018-06-26 17:40:37,217 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:40:37,221 INFO ]: 0 new accepting states [2018-06-26 17:40:38,100 INFO ]: Removed 61 edges and 25 locations by large block encoding [2018-06-26 17:40:38,102 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:40:38,106 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:40:38,106 INFO ]: 0 new accepting states [2018-06-26 17:40:38,106 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:40:38,106 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:40:38,106 INFO ]: Encoded RCFG 6 locations, 9 edges [2018-06-26 17:40:38,106 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:40:38 BasicIcfg [2018-06-26 17:40:38,106 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:40:38,108 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:40:38,108 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:40:38,112 INFO ]: TraceAbstraction initialized [2018-06-26 17:40:38,112 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:40:36" (1/4) ... [2018-06-26 17:40:38,113 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0b26c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:40:38, skipping insertion in model container [2018-06-26 17:40:38,113 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:36" (2/4) ... [2018-06-26 17:40:38,113 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0b26c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:40:38, skipping insertion in model container [2018-06-26 17:40:38,113 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:37" (3/4) ... [2018-06-26 17:40:38,114 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0b26c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:40:38, skipping insertion in model container [2018-06-26 17:40:38,114 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:40:38" (4/4) ... [2018-06-26 17:40:38,120 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:40:38,130 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:40:38,140 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:40:38,191 INFO ]: Using default assertion order modulation [2018-06-26 17:40:38,191 INFO ]: Interprodecural is true [2018-06-26 17:40:38,191 INFO ]: Hoare is false [2018-06-26 17:40:38,191 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:40:38,191 INFO ]: Backedges is TWOTRACK [2018-06-26 17:40:38,191 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:40:38,191 INFO ]: Difference is false [2018-06-26 17:40:38,191 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:40:38,191 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:40:38,206 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 17:40:38,228 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:40:38,228 INFO ]: Found error trace [2018-06-26 17:40:38,229 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:40:38,230 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:40:38,235 INFO ]: Analyzing trace with hash 37516634, now seen corresponding path program 1 times [2018-06-26 17:40:38,237 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:40:38,238 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:40:38,282 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:38,282 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:38,282 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:38,370 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:38,556 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:38,559 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:40:38,559 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:40:38,561 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:40:38,577 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:40:38,578 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:40:38,581 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 17:40:38,795 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:40:38,795 INFO ]: Finished difference Result 7 states and 12 transitions. [2018-06-26 17:40:38,795 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:40:38,797 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:40:38,797 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:40:38,807 INFO ]: With dead ends: 7 [2018-06-26 17:40:38,807 INFO ]: Without dead ends: 6 [2018-06-26 17:40:38,809 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:40:38,824 INFO ]: Start minimizeSevpa. Operand 6 states. [2018-06-26 17:40:38,837 INFO ]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-06-26 17:40:38,838 INFO ]: Start removeUnreachable. Operand 6 states. [2018-06-26 17:40:38,838 INFO ]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-06-26 17:40:38,839 INFO ]: Start accepts. Automaton has 6 states and 8 transitions. Word has length 5 [2018-06-26 17:40:38,839 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:40:38,839 INFO ]: Abstraction has 6 states and 8 transitions. [2018-06-26 17:40:38,839 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:40:38,839 INFO ]: Start isEmpty. Operand 6 states and 8 transitions. [2018-06-26 17:40:38,840 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:40:38,840 INFO ]: Found error trace [2018-06-26 17:40:38,840 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:40:38,840 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:40:38,840 INFO ]: Analyzing trace with hash 37546425, now seen corresponding path program 1 times [2018-06-26 17:40:38,840 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:40:38,840 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:40:38,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:38,841 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:38,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:38,874 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:38,999 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:38,999 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:40:38,999 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:40:39,000 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:40:39,000 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:40:39,001 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:40:39,001 INFO ]: Start difference. First operand 6 states and 8 transitions. Second operand 3 states. [2018-06-26 17:40:39,070 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:40:39,071 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-26 17:40:39,071 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:40:39,071 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:40:39,071 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:40:39,071 INFO ]: With dead ends: 7 [2018-06-26 17:40:39,071 INFO ]: Without dead ends: 7 [2018-06-26 17:40:39,072 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:40:39,072 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 17:40:39,073 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 17:40:39,073 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 17:40:39,074 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-26 17:40:39,074 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-26 17:40:39,074 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:40:39,074 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-26 17:40:39,074 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:40:39,074 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-26 17:40:39,074 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:40:39,074 INFO ]: Found error trace [2018-06-26 17:40:39,074 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:40:39,074 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:40:39,074 INFO ]: Analyzing trace with hash 1163765389, now seen corresponding path program 1 times [2018-06-26 17:40:39,074 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:40:39,074 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:40:39,075 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:39,075 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:39,075 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:39,117 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:39,300 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:39,300 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:40:39,300 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 17:40:39,309 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:39,484 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:39,497 INFO ]: Computing forward predicates... [2018-06-26 17:40:39,710 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:39,746 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:40:39,746 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-26 17:40:39,746 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:40:39,746 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:40:39,747 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:40:39,747 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 4 states. [2018-06-26 17:40:39,979 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:40:39,979 INFO ]: Finished difference Result 4 states and 8 transitions. [2018-06-26 17:40:39,980 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:40:39,980 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 17:40:39,980 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:40:39,980 INFO ]: With dead ends: 4 [2018-06-26 17:40:39,980 INFO ]: Without dead ends: 0 [2018-06-26 17:40:39,980 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:40:39,980 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:40:39,980 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:40:39,980 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:40:39,980 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:40:39,980 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-06-26 17:40:39,980 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:40:39,980 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:40:39,981 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:40:39,981 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:40:39,981 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:40:39,983 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:40:39,985 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:40:39 BasicIcfg [2018-06-26 17:40:39,985 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:40:39,986 INFO ]: Toolchain (without parser) took 3718.15 ms. Allocated memory was 307.8 MB in the beginning and 358.1 MB in the end (delta: 50.3 MB). Free memory was 240.2 MB in the beginning and 288.2 MB in the end (delta: -48.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:39,987 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:40:39,988 INFO ]: ChcToBoogie took 72.34 ms. Allocated memory is still 307.8 MB. Free memory was 240.2 MB in the beginning and 238.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:39,988 INFO ]: Boogie Preprocessor took 63.61 ms. Allocated memory is still 307.8 MB. Free memory was 238.2 MB in the beginning and 236.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:39,988 INFO ]: RCFGBuilder took 760.50 ms. Allocated memory is still 307.8 MB. Free memory was 236.2 MB in the beginning and 193.7 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:39,989 INFO ]: BlockEncodingV2 took 935.27 ms. Allocated memory was 307.8 MB in the beginning and 324.5 MB in the end (delta: 16.8 MB). Free memory was 193.7 MB in the beginning and 216.2 MB in the end (delta: -22.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:39,989 INFO ]: TraceAbstraction took 1877.28 ms. Allocated memory was 324.5 MB in the beginning and 358.1 MB in the end (delta: 33.6 MB). Free memory was 216.2 MB in the beginning and 288.2 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:40:39,993 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 33 locations, 36 edges - StatisticsResult: Encoded RCFG 6 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 72.34 ms. Allocated memory is still 307.8 MB. Free memory was 240.2 MB in the beginning and 238.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.61 ms. Allocated memory is still 307.8 MB. Free memory was 238.2 MB in the beginning and 236.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 760.50 ms. Allocated memory is still 307.8 MB. Free memory was 236.2 MB in the beginning and 193.7 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 935.27 ms. Allocated memory was 307.8 MB in the beginning and 324.5 MB in the end (delta: 16.8 MB). Free memory was 193.7 MB in the beginning and 216.2 MB in the end (delta: -22.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1877.28 ms. Allocated memory was 324.5 MB in the beginning and 358.1 MB in the end (delta: 33.6 MB). Free memory was 216.2 MB in the beginning and 288.2 MB in the end (delta: -72.0 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, 6 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 8 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 302 SizeOfPredicates, 55 NumberOfNonLiveVariables, 780 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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/07.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-40-40-004.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/07.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-40-40-004.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/07.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-40-40-004.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/07.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-40-40-004.csv Received shutdown request...