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/llreve/loop5_unsafe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:51:40,406 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:51:40,408 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:51:40,422 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:51:40,422 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:51:40,423 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:51:40,426 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:51:40,432 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:51:40,434 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:51:40,434 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:51:40,437 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:51:40,437 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:51:40,438 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:51:40,439 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:51:40,442 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:51:40,443 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:51:40,443 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:51:40,445 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:51:40,458 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:51:40,459 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:51:40,460 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:51:40,461 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:51:40,463 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:51:40,463 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:51:40,463 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:51:40,464 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:51:40,469 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:51:40,470 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:51:40,470 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:51:40,471 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:51:40,471 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:51:40,472 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:51:40,472 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:51:40,472 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:51:40,477 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:51:40,478 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:51:40,478 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:51:40,497 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:51:40,497 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:51:40,497 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:51:40,497 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:51:40,501 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:51:40,502 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:51:40,502 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:51:40,502 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:51:40,502 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:51:40,503 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:51:40,503 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:51:40,503 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:51:40,503 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:51:40,503 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:51:40,503 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:51:40,504 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:51:40,506 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:51:40,507 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:51:40,507 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:51:40,507 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:51:40,507 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:51:40,509 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:51:40,509 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:51:40,555 INFO ]: Repository-Root is: /tmp [2018-06-26 17:51:40,571 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:51:40,576 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:51:40,577 INFO ]: Initializing SmtParser... [2018-06-26 17:51:40,578 INFO ]: SmtParser initialized [2018-06-26 17:51:40,578 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_unsafe.c-1.smt2 [2018-06-26 17:51:40,579 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 17:51:40,660 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_unsafe.c-1.smt2 unknown [2018-06-26 17:51:40,773 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/loop5_unsafe.c-1.smt2 [2018-06-26 17:51:40,778 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:51:40,784 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:51:40,785 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:51:40,785 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:51:40,785 INFO ]: ChcToBoogie initialized [2018-06-26 17:51:40,788 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:51:40" (1/1) ... [2018-06-26 17:51:40,850 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40 Unit [2018-06-26 17:51:40,850 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:51:40,851 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:51:40,851 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:51:40,851 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:51:40,873 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (1/1) ... [2018-06-26 17:51:40,873 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (1/1) ... [2018-06-26 17:51:40,881 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (1/1) ... [2018-06-26 17:51:40,881 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (1/1) ... [2018-06-26 17:51:40,883 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (1/1) ... [2018-06-26 17:51:40,885 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (1/1) ... [2018-06-26 17:51:40,885 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (1/1) ... [2018-06-26 17:51:40,887 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:51:40,889 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:51:40,889 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:51:40,889 INFO ]: RCFGBuilder initialized [2018-06-26 17:51:40,890 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (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 17:51:40,907 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:51:40,907 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:51:40,907 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:51:40,907 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:51:40,907 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:51:40,907 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 17:51:41,123 INFO ]: Using library mode [2018-06-26 17:51:41,123 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:51:41 BoogieIcfgContainer [2018-06-26 17:51:41,123 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:51:41,124 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:51:41,124 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:51:41,125 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:51:41,126 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:51:41" (1/1) ... [2018-06-26 17:51:41,161 INFO ]: Initial Icfg 13 locations, 14 edges [2018-06-26 17:51:41,167 INFO ]: Using Remove infeasible edges [2018-06-26 17:51:41,169 INFO ]: Using Maximize final states [2018-06-26 17:51:41,171 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:51:41,171 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:51:41,173 INFO ]: Using Remove sink states [2018-06-26 17:51:41,173 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:51:41,174 INFO ]: Using Use SBE [2018-06-26 17:51:41,188 INFO ]: SBE split 2 edges [2018-06-26 17:51:41,195 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:51:41,196 INFO ]: 0 new accepting states [2018-06-26 17:51:41,255 INFO ]: Removed 9 edges and 4 locations by large block encoding [2018-06-26 17:51:41,257 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:51:41,258 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:51:41,258 INFO ]: 0 new accepting states [2018-06-26 17:51:41,259 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:51:41,259 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:51:41,259 INFO ]: Encoded RCFG 7 locations, 10 edges [2018-06-26 17:51:41,259 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:51:41 BasicIcfg [2018-06-26 17:51:41,260 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:51:41,261 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:51:41,261 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:51:41,264 INFO ]: TraceAbstraction initialized [2018-06-26 17:51:41,264 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:51:40" (1/4) ... [2018-06-26 17:51:41,266 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff24726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:51:41, skipping insertion in model container [2018-06-26 17:51:41,266 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:51:40" (2/4) ... [2018-06-26 17:51:41,266 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff24726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:51:41, skipping insertion in model container [2018-06-26 17:51:41,266 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:51:41" (3/4) ... [2018-06-26 17:51:41,266 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff24726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:51:41, skipping insertion in model container [2018-06-26 17:51:41,266 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:51:41" (4/4) ... [2018-06-26 17:51:41,268 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:51:41,279 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:51:41,288 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:51:41,325 INFO ]: Using default assertion order modulation [2018-06-26 17:51:41,325 INFO ]: Interprodecural is true [2018-06-26 17:51:41,325 INFO ]: Hoare is false [2018-06-26 17:51:41,325 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:51:41,325 INFO ]: Backedges is TWOTRACK [2018-06-26 17:51:41,325 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:51:41,325 INFO ]: Difference is false [2018-06-26 17:51:41,326 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:51:41,326 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:51:41,335 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 17:51:41,343 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:51:41,343 INFO ]: Found error trace [2018-06-26 17:51:41,344 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:51:41,344 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:51:41,350 INFO ]: Analyzing trace with hash 991436244, now seen corresponding path program 1 times [2018-06-26 17:51:41,351 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:51:41,351 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:51:41,383 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:41,383 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:51:41,383 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:41,430 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:51:41,500 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:51:41,502 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:51:41,502 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:51:41,503 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:51:41,515 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:51:41,516 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:51:41,518 INFO ]: Start difference. First operand 7 states. Second operand 4 states. [2018-06-26 17:51:41,659 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:51:41,659 INFO ]: Finished difference Result 11 states and 17 transitions. [2018-06-26 17:51:41,660 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:51:41,661 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 17:51:41,661 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:51:41,671 INFO ]: With dead ends: 11 [2018-06-26 17:51:41,671 INFO ]: Without dead ends: 11 [2018-06-26 17:51:41,673 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:51:41,689 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:51:41,706 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-26 17:51:41,709 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:51:41,709 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2018-06-26 17:51:41,710 INFO ]: Start accepts. Automaton has 9 states and 14 transitions. Word has length 6 [2018-06-26 17:51:41,711 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:51:41,711 INFO ]: Abstraction has 9 states and 14 transitions. [2018-06-26 17:51:41,711 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:51:41,711 INFO ]: Start isEmpty. Operand 9 states and 14 transitions. [2018-06-26 17:51:41,712 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:51:41,712 INFO ]: Found error trace [2018-06-26 17:51:41,712 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:51:41,712 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:51:41,712 INFO ]: Analyzing trace with hash 669135633, now seen corresponding path program 1 times [2018-06-26 17:51:41,712 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:51:41,712 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:51:41,713 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:41,713 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:51:41,713 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:41,734 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:51:41,881 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:51:41,881 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:51:41,881 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 17:51:41,888 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:51:41,934 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:51:41,943 INFO ]: Computing forward predicates... [2018-06-26 17:51:42,070 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:51:42,103 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 17:51:42,103 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2018-06-26 17:51:42,103 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:51:42,104 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:51:42,104 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:51:42,104 INFO ]: Start difference. First operand 9 states and 14 transitions. Second operand 6 states. [2018-06-26 17:51:42,387 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:51:42,387 INFO ]: Finished difference Result 12 states and 19 transitions. [2018-06-26 17:51:42,387 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:51:42,387 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-26 17:51:42,387 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:51:42,388 INFO ]: With dead ends: 12 [2018-06-26 17:51:42,388 INFO ]: Without dead ends: 10 [2018-06-26 17:51:42,389 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-26 17:51:42,389 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 17:51:42,391 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-26 17:51:42,391 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:51:42,391 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2018-06-26 17:51:42,391 INFO ]: Start accepts. Automaton has 10 states and 15 transitions. Word has length 7 [2018-06-26 17:51:42,391 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:51:42,391 INFO ]: Abstraction has 10 states and 15 transitions. [2018-06-26 17:51:42,391 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:51:42,391 INFO ]: Start isEmpty. Operand 10 states and 15 transitions. [2018-06-26 17:51:42,392 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:51:42,392 INFO ]: Found error trace [2018-06-26 17:51:42,392 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:51:42,392 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:51:42,392 INFO ]: Analyzing trace with hash 660347288, now seen corresponding path program 1 times [2018-06-26 17:51:42,392 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:51:42,392 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:51:42,393 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:42,393 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:51:42,393 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:51:42,406 INFO ]: Conjunction of SSA is sat [2018-06-26 17:51:42,408 INFO ]: Counterexample might be feasible [2018-06-26 17:51:42,420 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:51:42,422 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:51:42 BasicIcfg [2018-06-26 17:51:42,422 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:51:42,423 INFO ]: Toolchain (without parser) took 1644.00 ms. Allocated memory is still 308.8 MB. Free memory was 265.1 MB in the beginning and 211.5 MB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:42,424 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:51:42,425 INFO ]: ChcToBoogie took 65.32 ms. Allocated memory is still 308.8 MB. Free memory was 265.1 MB in the beginning and 262.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:42,425 INFO ]: Boogie Preprocessor took 35.99 ms. Allocated memory is still 308.8 MB. Free memory was 262.1 MB in the beginning and 261.1 MB in the end (delta: 996.5 kB). Peak memory consumption was 996.5 kB. Max. memory is 3.6 GB. [2018-06-26 17:51:42,426 INFO ]: RCFGBuilder took 234.48 ms. Allocated memory is still 308.8 MB. Free memory was 261.1 MB in the beginning and 253.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:42,426 INFO ]: BlockEncodingV2 took 135.93 ms. Allocated memory is still 308.8 MB. Free memory was 253.1 MB in the beginning and 249.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:42,427 INFO ]: TraceAbstraction took 1161.27 ms. Allocated memory is still 308.8 MB. Free memory was 249.1 MB in the beginning and 211.5 MB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 3.6 GB. [2018-06-26 17:51:42,431 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 14 edges - StatisticsResult: Encoded RCFG 7 locations, 10 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.32 ms. Allocated memory is still 308.8 MB. Free memory was 265.1 MB in the beginning and 262.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.99 ms. Allocated memory is still 308.8 MB. Free memory was 262.1 MB in the beginning and 261.1 MB in the end (delta: 996.5 kB). Peak memory consumption was 996.5 kB. Max. memory is 3.6 GB. * RCFGBuilder took 234.48 ms. Allocated memory is still 308.8 MB. Free memory was 261.1 MB in the beginning and 253.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 135.93 ms. Allocated memory is still 308.8 MB. Free memory was 253.1 MB in the beginning and 249.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1161.27 ms. Allocated memory is still 308.8 MB. Free memory was 249.1 MB in the beginning and 211.5 MB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0); [L0] assume !(0 <= hbv_inv_main29_1_Int + -1 && !(hbv_inv_main29_2_Int == 0)); [L0] hhv_inv_main23_0_Int, hhv_inv_main23_1_Int, hhv_inv_main23_2_Int, hhv_inv_main23_3_Int, hhv_inv_main23_4_Int := hhv_inv_main29_0_Int, hhv_inv_main29_1_Int, hbv_inv_main29_3_Int, hbv_inv_main29_1_Int, hhv_inv_main29_2_Int; [L0] havoc hbv_inv_main29_2_Int, hbv_inv_main29_1_Int, hbv_inv_main29_3_Int; [L0] assume ((!(hbv_inv_main23_3_Int == 0) && hhv_inv_main23_3_Int == hbv_inv_main23_1_Int + -1) && hhv_inv_main23_4_Int == hbv_inv_main23_2_Int + 2) && 0 <= hbv_inv_main23_1_Int + -1; [L0] hhv_inv_main23_0_Int, hhv_inv_main23_1_Int, hhv_inv_main23_2_Int, hhv_inv_main23_3_Int, hhv_inv_main23_4_Int := hhv_inv_main23_0_Int, hhv_inv_main23_1_Int, hhv_inv_main23_2_Int, hbv_inv_main23_1_Int, hbv_inv_main23_2_Int; [L0] havoc hbv_inv_main23_1_Int, hbv_inv_main23_2_Int, hbv_inv_main23_3_Int; [L0] assume ((hhv_inv_main23_4_Int == 0 && hhv_inv_main23_2_Int == hhv_inv_main23_0_Int) && hhv_inv_main23_3_Int == hhv_inv_main23_0_Int + 1) && !(!(hbv_inv_main23_3_Int == 0) && 0 <= hbv_inv_main23_1_Int + hbv_inv_main23_1_Int + -1 * hbv_inv_main23_2_Int + -1); [L0] hhv_inv_main10_0_Int, hhv_inv_main10_1_Int, hhv_inv_main10_2_Int, hhv_inv_main10_3_Int := hhv_inv_main23_0_Int, hbv_inv_main23_1_Int, hbv_inv_main23_2_Int, hhv_inv_main23_1_Int; [L0] havoc hbv_inv_main23_1_Int, hbv_inv_main23_2_Int, hbv_inv_main23_3_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 7 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 6 SDslu, 30 SDs, 0 SdLazy, 36 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 1 QuantifiedInterpolants, 355 SizeOfPredicates, 5 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-51-42-444.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-51-42-444.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-51-42-444.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop5_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-51-42-444.csv Received shutdown request...