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/vmt-chc-benchmarks/ctigar/MADWiFi-encode_ie_ok.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 21:36:09,480 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 21:36:09,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 21:36:09,496 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 21:36:09,496 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 21:36:09,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 21:36:09,497 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 21:36:09,501 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 21:36:09,503 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 21:36:09,504 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 21:36:09,506 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 21:36:09,506 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 21:36:09,507 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 21:36:09,507 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 21:36:09,508 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 21:36:09,511 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 21:36:09,512 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 21:36:09,514 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 21:36:09,521 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 21:36:09,522 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 21:36:09,523 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 21:36:09,524 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 21:36:09,526 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 21:36:09,526 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 21:36:09,527 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 21:36:09,527 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 21:36:09,528 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 21:36:09,529 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 21:36:09,530 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 21:36:09,531 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 21:36:09,531 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 21:36:09,531 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 21:36:09,531 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 21:36:09,532 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 21:36:09,532 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 21:36:09,533 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 21:36:09,533 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 21:36:09,547 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 21:36:09,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 21:36:09,547 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 21:36:09,548 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 21:36:09,549 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 21:36:09,549 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 21:36:09,549 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 21:36:09,549 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 21:36:09,549 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 21:36:09,550 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 21:36:09,550 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 21:36:09,550 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 21:36:09,550 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 21:36:09,550 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 21:36:09,550 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 21:36:09,551 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 21:36:09,551 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 21:36:09,551 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 21:36:09,551 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 21:36:09,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 21:36:09,551 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 21:36:09,553 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 21:36:09,553 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 21:36:09,602 INFO ]: Repository-Root is: /tmp [2018-06-26 21:36:09,620 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 21:36:09,626 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 21:36:09,627 INFO ]: Initializing SmtParser... [2018-06-26 21:36:09,628 INFO ]: SmtParser initialized [2018-06-26 21:36:09,628 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/MADWiFi-encode_ie_ok.c.smt2 [2018-06-26 21:36:09,629 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 21:36:09,719 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/MADWiFi-encode_ie_ok.c.smt2 unknown [2018-06-26 21:36:10,058 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/MADWiFi-encode_ie_ok.c.smt2 [2018-06-26 21:36:10,062 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 21:36:10,067 INFO ]: Walking toolchain with 5 elements. [2018-06-26 21:36:10,067 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 21:36:10,068 INFO ]: Initializing ChcToBoogie... [2018-06-26 21:36:10,068 INFO ]: ChcToBoogie initialized [2018-06-26 21:36:10,071 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,127 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10 Unit [2018-06-26 21:36:10,127 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 21:36:10,128 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 21:36:10,128 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 21:36:10,128 INFO ]: Boogie Preprocessor initialized [2018-06-26 21:36:10,152 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,152 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,160 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,160 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,174 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,175 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,178 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,180 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 21:36:10,180 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 21:36:10,180 INFO ]: Initializing RCFGBuilder... [2018-06-26 21:36:10,180 INFO ]: RCFGBuilder initialized [2018-06-26 21:36:10,184 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (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) [2018-06-26 21:36:10,193 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 21:36:10,193 INFO ]: Found specification of procedure gotoProc [2018-06-26 21:36:10,193 INFO ]: Found implementation of procedure gotoProc [2018-06-26 21:36:10,194 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 21:36:10,194 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 21:36:10,194 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 [2018-06-26 21:36:10,420 INFO ]: Using library mode [2018-06-26 21:36:10,421 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 09:36:10 BoogieIcfgContainer [2018-06-26 21:36:10,421 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 21:36:10,421 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 21:36:10,421 INFO ]: Initializing BlockEncodingV2... [2018-06-26 21:36:10,429 INFO ]: BlockEncodingV2 initialized [2018-06-26 21:36:10,430 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 09:36:10" (1/1) ... [2018-06-26 21:36:10,453 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-26 21:36:10,454 INFO ]: Using Remove infeasible edges [2018-06-26 21:36:10,454 INFO ]: Using Maximize final states [2018-06-26 21:36:10,455 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 21:36:10,455 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 21:36:10,457 INFO ]: Using Remove sink states [2018-06-26 21:36:10,457 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 21:36:10,457 INFO ]: Using Use SBE [2018-06-26 21:36:10,471 WARN ]: expecting exponential blowup for input size 6 [2018-06-26 21:36:10,506 WARN ]: aborting because of expected exponential blowup for input size 40 [2018-06-26 21:36:10,519 WARN ]: aborting because of expected exponential blowup for input size 40 [2018-06-26 21:36:10,519 INFO ]: SBE split 1 edges [2018-06-26 21:36:10,526 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 21:36:10,527 INFO ]: 0 new accepting states [2018-06-26 21:36:10,581 INFO ]: Removed 5 edges and 2 locations by large block encoding [2018-06-26 21:36:10,583 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 21:36:10,584 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 21:36:10,584 INFO ]: 0 new accepting states [2018-06-26 21:36:10,585 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 21:36:10,586 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 21:36:10,586 INFO ]: Encoded RCFG 6 locations, 7 edges [2018-06-26 21:36:10,587 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 09:36:10 BasicIcfg [2018-06-26 21:36:10,587 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 21:36:10,588 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 21:36:10,588 INFO ]: Initializing TraceAbstraction... [2018-06-26 21:36:10,594 INFO ]: TraceAbstraction initialized [2018-06-26 21:36:10,594 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 09:36:10" (1/4) ... [2018-06-26 21:36:10,595 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648bb550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 09:36:10, skipping insertion in model container [2018-06-26 21:36:10,595 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 09:36:10" (2/4) ... [2018-06-26 21:36:10,595 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648bb550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 09:36:10, skipping insertion in model container [2018-06-26 21:36:10,595 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 09:36:10" (3/4) ... [2018-06-26 21:36:10,595 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648bb550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 09:36:10, skipping insertion in model container [2018-06-26 21:36:10,595 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 09:36:10" (4/4) ... [2018-06-26 21:36:10,597 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 21:36:10,607 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 21:36:10,616 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 21:36:10,654 INFO ]: Using default assertion order modulation [2018-06-26 21:36:10,655 INFO ]: Interprodecural is true [2018-06-26 21:36:10,655 INFO ]: Hoare is false [2018-06-26 21:36:10,655 INFO ]: Compute interpolants for FPandBP [2018-06-26 21:36:10,655 INFO ]: Backedges is TWOTRACK [2018-06-26 21:36:10,655 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 21:36:10,655 INFO ]: Difference is false [2018-06-26 21:36:10,655 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 21:36:10,655 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 21:36:10,664 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 21:36:10,672 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 21:36:10,672 INFO ]: Found error trace [2018-06-26 21:36:10,673 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 21:36:10,673 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 21:36:10,678 INFO ]: Analyzing trace with hash 35465027, now seen corresponding path program 1 times [2018-06-26 21:36:10,679 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 21:36:10,679 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 21:36:10,712 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 21:36:10,712 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 21:36:10,712 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 21:36:10,750 INFO ]: Conjunction of SSA is unsat [2018-06-26 21:36:10,789 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 21:36:10,791 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 21:36:10,791 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 21:36:10,792 INFO ]: Interpolant automaton has 3 states [2018-06-26 21:36:10,802 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 21:36:10,802 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 21:36:10,804 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 21:36:10,878 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 21:36:10,878 INFO ]: Finished difference Result 7 states and 8 transitions. [2018-06-26 21:36:10,879 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 21:36:10,880 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 21:36:10,880 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 21:36:10,893 INFO ]: With dead ends: 7 [2018-06-26 21:36:10,893 INFO ]: Without dead ends: 7 [2018-06-26 21:36:10,898 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 21:36:10,911 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 21:36:10,925 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 21:36:10,927 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 21:36:10,927 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-06-26 21:36:10,928 INFO ]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-06-26 21:36:10,928 INFO ]: Finished accepts. word is rejected. [2018-06-26 21:36:10,928 INFO ]: Abstraction has 7 states and 8 transitions. [2018-06-26 21:36:10,928 INFO ]: Interpolant automaton has 3 states. [2018-06-26 21:36:10,928 INFO ]: Start isEmpty. Operand 7 states and 8 transitions. [2018-06-26 21:36:10,929 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 21:36:10,929 INFO ]: Found error trace [2018-06-26 21:36:10,929 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 21:36:10,929 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 21:36:10,929 INFO ]: Analyzing trace with hash 1099033518, now seen corresponding path program 1 times [2018-06-26 21:36:10,929 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 21:36:10,929 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 21:36:10,930 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 21:36:10,930 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 21:36:10,930 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 21:36:10,994 INFO ]: Conjunction of SSA is unsat [2018-06-26 21:36:11,068 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 21:36:11,068 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 21:36:11,068 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 21:36:11,075 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 21:36:11,131 INFO ]: Conjunction of SSA is unsat [2018-06-26 21:36:11,140 INFO ]: Computing forward predicates... [2018-06-26 21:36:11,866 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 21:36:11,889 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 21:36:11,889 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-26 21:36:11,890 INFO ]: Interpolant automaton has 4 states [2018-06-26 21:36:11,892 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 21:36:11,892 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-26 21:36:11,893 INFO ]: Start difference. First operand 7 states and 8 transitions. Second operand 4 states. [2018-06-26 21:36:11,968 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 21:36:11,968 INFO ]: Finished difference Result 8 states and 9 transitions. [2018-06-26 21:36:11,969 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 21:36:11,969 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 21:36:11,969 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 21:36:11,969 INFO ]: With dead ends: 8 [2018-06-26 21:36:11,969 INFO ]: Without dead ends: 8 [2018-06-26 21:36:11,970 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-26 21:36:11,970 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 21:36:11,971 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 21:36:11,971 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 21:36:11,971 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-06-26 21:36:11,971 INFO ]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2018-06-26 21:36:11,971 INFO ]: Finished accepts. word is rejected. [2018-06-26 21:36:11,971 INFO ]: Abstraction has 8 states and 9 transitions. [2018-06-26 21:36:11,971 INFO ]: Interpolant automaton has 4 states. [2018-06-26 21:36:11,971 INFO ]: Start isEmpty. Operand 8 states and 9 transitions. [2018-06-26 21:36:11,971 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 21:36:11,971 INFO ]: Found error trace [2018-06-26 21:36:11,972 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-26 21:36:11,972 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 21:36:11,972 INFO ]: Analyzing trace with hash -290081629, now seen corresponding path program 2 times [2018-06-26 21:36:11,972 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 21:36:11,972 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 21:36:11,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 21:36:11,974 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 21:36:11,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 21:36:12,067 INFO ]: Conjunction of SSA is unsat [2018-06-26 21:36:12,447 WARN ]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-26 21:36:12,559 WARN ]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-26 21:36:12,559 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 21:36:12,559 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 21:36:12,559 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 [2018-06-26 21:36:12,567 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 21:36:12,635 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 21:36:12,635 INFO ]: Conjunction of SSA is unsat [2018-06-26 21:36:12,638 INFO ]: Computing forward predicates... [2018-06-26 21:36:13,657 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 21:36:13,677 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 21:36:13,677 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-26 21:36:13,677 INFO ]: Interpolant automaton has 5 states [2018-06-26 21:36:13,677 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 21:36:13,677 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 21:36:13,677 INFO ]: Start difference. First operand 8 states and 9 transitions. Second operand 5 states. [2018-06-26 21:36:13,752 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 21:36:13,753 INFO ]: Finished difference Result 9 states and 10 transitions. [2018-06-26 21:36:13,753 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-26 21:36:13,753 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-26 21:36:13,753 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 21:36:13,753 INFO ]: With dead ends: 9 [2018-06-26 21:36:13,753 INFO ]: Without dead ends: 9 [2018-06-26 21:36:13,754 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-26 21:36:13,754 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 21:36:13,755 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-26 21:36:13,755 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 21:36:13,755 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-06-26 21:36:13,755 INFO ]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2018-06-26 21:36:13,755 INFO ]: Finished accepts. word is rejected. [2018-06-26 21:36:13,755 INFO ]: Abstraction has 9 states and 10 transitions. [2018-06-26 21:36:13,755 INFO ]: Interpolant automaton has 5 states. [2018-06-26 21:36:13,755 INFO ]: Start isEmpty. Operand 9 states and 10 transitions. [2018-06-26 21:36:13,755 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 21:36:13,755 INFO ]: Found error trace [2018-06-26 21:36:13,755 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-26 21:36:13,755 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 21:36:13,755 INFO ]: Analyzing trace with hash -402978226, now seen corresponding path program 3 times [2018-06-26 21:36:13,756 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 21:36:13,756 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 21:36:13,756 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 21:36:13,756 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 21:36:13,756 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 21:36:13,810 INFO ]: Conjunction of SSA is unsat [2018-06-26 21:36:14,003 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 21:36:14,004 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 21:36:14,004 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 21:36:14,013 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-26 21:36:14,087 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-26 21:36:14,087 INFO ]: Conjunction of SSA is unsat [2018-06-26 21:36:14,090 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-26 21:37:18,047 INFO ]: Timeout while computing interpolants [2018-06-26 21:37:18,247 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 21:37:18,248 WARN ]: Verification canceled [2018-06-26 21:37:18,249 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 21:37:18,250 WARN ]: Timeout [2018-06-26 21:37:18,251 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 09:37:18 BasicIcfg [2018-06-26 21:37:18,251 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 21:37:18,252 INFO ]: Toolchain (without parser) took 68188.80 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 259.7 MB in the beginning and 939.7 MB in the end (delta: -680.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-26 21:37:18,253 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 21:37:18,254 INFO ]: ChcToBoogie took 60.24 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 255.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 21:37:18,255 INFO ]: Boogie Preprocessor took 51.57 ms. Allocated memory is still 309.3 MB. Free memory is still 255.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 21:37:18,255 INFO ]: RCFGBuilder took 240.45 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 243.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-26 21:37:18,256 INFO ]: BlockEncodingV2 took 165.56 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 235.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 21:37:18,257 INFO ]: TraceAbstraction took 67662.63 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.8 MB in the beginning and 939.7 MB in the end (delta: -703.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-26 21:37:18,260 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 10 edges - StatisticsResult: Encoded RCFG 6 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.24 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 255.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 51.57 ms. Allocated memory is still 309.3 MB. Free memory is still 255.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 240.45 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 243.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 165.56 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 235.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67662.63 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.8 MB in the beginning and 939.7 MB in the end (delta: -703.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 91313 quantified variables from 14 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 67.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 15 SDs, 0 SdLazy, 13 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 486 SizeOfPredicates, 10 NumberOfNonLiveVariables, 264 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MADWiFi-encode_ie_ok.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_21-37-18-272.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MADWiFi-encode_ie_ok.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_21-37-18-272.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MADWiFi-encode_ie_ok.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_21-37-18-272.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/MADWiFi-encode_ie_ok.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_21-37-18-272.csv Completed graceful shutdown