java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/point-location.45.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 10:44:28,326 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 10:44:28,328 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 10:44:28,341 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 10:44:28,342 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 10:44:28,342 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 10:44:28,344 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 10:44:28,348 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 10:44:28,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 10:44:28,351 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 10:44:28,353 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 10:44:28,353 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 10:44:28,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 10:44:28,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 10:44:28,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 10:44:28,359 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 10:44:28,361 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 10:44:28,371 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 10:44:28,373 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 10:44:28,374 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 10:44:28,375 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 10:44:28,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 10:44:28,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 10:44:28,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 10:44:28,387 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 10:44:28,389 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 10:44:28,389 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 10:44:28,392 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 10:44:28,393 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 10:44:28,393 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 10:44:28,394 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 10:44:28,395 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 10:44:28,395 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 10:44:28,402 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 10:44:28,403 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 10:44:28,403 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 10:44:28,425 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 10:44:28,425 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 10:44:28,426 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 10:44:28,426 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 10:44:28,427 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 10:44:28,428 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 10:44:28,428 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 10:44:28,428 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 10:44:28,428 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 10:44:28,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 10:44:28,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:44:28,429 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 10:44:28,429 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 10:44:28,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 10:44:28,429 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 10:44:28,430 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 10:44:28,430 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 10:44:28,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 10:44:28,431 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 10:44:28,432 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 10:44:28,433 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 10:44:28,476 INFO ]: Repository-Root is: /tmp [2018-06-22 10:44:28,492 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 10:44:28,497 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 10:44:28,498 INFO ]: Initializing SmtParser... [2018-06-22 10:44:28,499 INFO ]: SmtParser initialized [2018-06-22 10:44:28,500 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/point-location.45.smt2 [2018-06-22 10:44:28,501 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 [2018-06-22 10:44:28,593 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/point-location.45.smt2 unknown [2018-06-22 10:44:29,063 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/point-location.45.smt2 [2018-06-22 10:44:29,068 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 10:44:29,074 INFO ]: Walking toolchain with 4 elements. [2018-06-22 10:44:29,074 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 10:44:29,074 INFO ]: Initializing ChcToBoogie... [2018-06-22 10:44:29,074 INFO ]: ChcToBoogie initialized [2018-06-22 10:44:29,077 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:44:29" (1/1) ... [2018-06-22 10:44:29,161 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29 Unit [2018-06-22 10:44:29,161 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 10:44:29,162 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 10:44:29,162 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 10:44:29,162 INFO ]: Boogie Preprocessor initialized [2018-06-22 10:44:29,180 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (1/1) ... [2018-06-22 10:44:29,180 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (1/1) ... [2018-06-22 10:44:29,190 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (1/1) ... [2018-06-22 10:44:29,191 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (1/1) ... [2018-06-22 10:44:29,202 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (1/1) ... [2018-06-22 10:44:29,206 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (1/1) ... [2018-06-22 10:44:29,214 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (1/1) ... [2018-06-22 10:44:29,218 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 10:44:29,218 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 10:44:29,218 INFO ]: Initializing RCFGBuilder... [2018-06-22 10:44:29,219 INFO ]: RCFGBuilder initialized [2018-06-22 10:44:29,219 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (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) [2018-06-22 10:44:29,232 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 10:44:29,232 INFO ]: Found specification of procedure False [2018-06-22 10:44:29,233 INFO ]: Found implementation of procedure False [2018-06-22 10:44:29,233 INFO ]: Specification and implementation of procedure step_lturn__bar given in one single declaration [2018-06-22 10:44:29,233 INFO ]: Found specification of procedure step_lturn__bar [2018-06-22 10:44:29,233 INFO ]: Found implementation of procedure step_lturn__bar [2018-06-22 10:44:29,233 INFO ]: Specification and implementation of procedure combined_lturn__bar given in one single declaration [2018-06-22 10:44:29,233 INFO ]: Found specification of procedure combined_lturn__bar [2018-06-22 10:44:29,233 INFO ]: Found implementation of procedure combined_lturn__bar [2018-06-22 10:44:29,233 INFO ]: Specification and implementation of procedure lturn__bar given in one single declaration [2018-06-22 10:44:29,233 INFO ]: Found specification of procedure lturn__bar [2018-06-22 10:44:29,233 INFO ]: Found implementation of procedure lturn__bar [2018-06-22 10:44:29,233 INFO ]: Specification and implementation of procedure step_lturn given in one single declaration [2018-06-22 10:44:29,233 INFO ]: Found specification of procedure step_lturn [2018-06-22 10:44:29,233 INFO ]: Found implementation of procedure step_lturn [2018-06-22 10:44:29,233 INFO ]: Specification and implementation of procedure combined_lturn given in one single declaration [2018-06-22 10:44:29,233 INFO ]: Found specification of procedure combined_lturn [2018-06-22 10:44:29,233 INFO ]: Found implementation of procedure combined_lturn [2018-06-22 10:44:29,233 INFO ]: Specification and implementation of procedure lturn given in one single declaration [2018-06-22 10:44:29,233 INFO ]: Found specification of procedure lturn [2018-06-22 10:44:29,233 INFO ]: Found implementation of procedure lturn [2018-06-22 10:44:29,233 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 10:44:29,233 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 10:44:29,233 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 [2018-06-22 10:44:30,072 INFO ]: Using library mode [2018-06-22 10:44:30,075 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:44:30 BoogieIcfgContainer [2018-06-22 10:44:30,076 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 10:44:30,077 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 10:44:30,077 INFO ]: Initializing TraceAbstraction... [2018-06-22 10:44:30,083 INFO ]: TraceAbstraction initialized [2018-06-22 10:44:30,083 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:44:29" (1/3) ... [2018-06-22 10:44:30,084 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74729d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 10:44:30, skipping insertion in model container [2018-06-22 10:44:30,084 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:44:29" (2/3) ... [2018-06-22 10:44:30,084 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74729d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:44:30, skipping insertion in model container [2018-06-22 10:44:30,084 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:44:30" (3/3) ... [2018-06-22 10:44:30,087 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 10:44:30,097 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 10:44:30,107 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 10:44:30,146 INFO ]: Using default assertion order modulation [2018-06-22 10:44:30,146 INFO ]: Interprodecural is true [2018-06-22 10:44:30,146 INFO ]: Hoare is false [2018-06-22 10:44:30,147 INFO ]: Compute interpolants for FPandBP [2018-06-22 10:44:30,147 INFO ]: Backedges is TWOTRACK [2018-06-22 10:44:30,147 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 10:44:30,147 INFO ]: Difference is false [2018-06-22 10:44:30,147 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 10:44:30,147 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 10:44:30,166 INFO ]: Start isEmpty. Operand 162 states. [2018-06-22 10:44:30,200 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:44:30,201 INFO ]: Found error trace [2018-06-22 10:44:30,202 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:44:30,202 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:44:30,206 INFO ]: Analyzing trace with hash -2054655803, now seen corresponding path program 1 times [2018-06-22 10:44:30,207 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:44:30,208 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:44:30,243 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:30,243 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:30,243 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:30,388 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:30,708 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:44:30,712 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:44:30,712 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 [2018-06-22 10:44:30,720 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:30,840 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:30,847 INFO ]: Computing forward predicates... [2018-06-22 10:44:30,894 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:44:30,935 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:44:30,935 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-22 10:44:30,938 INFO ]: Interpolant automaton has 6 states [2018-06-22 10:44:30,953 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 10:44:30,953 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 10:44:30,956 INFO ]: Start difference. First operand 162 states. Second operand 6 states. [2018-06-22 10:44:33,942 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:44:33,942 INFO ]: Finished difference Result 210 states and 606 transitions. [2018-06-22 10:44:33,942 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 10:44:33,943 INFO ]: Start accepts. Automaton has 6 states. Word has length 17 [2018-06-22 10:44:33,943 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:44:33,971 INFO ]: With dead ends: 210 [2018-06-22 10:44:33,971 INFO ]: Without dead ends: 200 [2018-06-22 10:44:33,973 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:44:33,991 INFO ]: Start minimizeSevpa. Operand 200 states. [2018-06-22 10:44:34,207 INFO ]: Finished minimizeSevpa. Reduced states from 200 to 197. [2018-06-22 10:44:34,209 INFO ]: Start removeUnreachable. Operand 197 states. [2018-06-22 10:44:34,217 INFO ]: Finished removeUnreachable. Reduced from 197 states to 197 states and 587 transitions. [2018-06-22 10:44:34,219 INFO ]: Start accepts. Automaton has 197 states and 587 transitions. Word has length 17 [2018-06-22 10:44:34,220 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:44:34,220 INFO ]: Abstraction has 197 states and 587 transitions. [2018-06-22 10:44:34,220 INFO ]: Interpolant automaton has 6 states. [2018-06-22 10:44:34,220 INFO ]: Start isEmpty. Operand 197 states and 587 transitions. [2018-06-22 10:44:34,230 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:44:34,230 INFO ]: Found error trace [2018-06-22 10:44:34,230 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:44:34,230 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:44:34,230 INFO ]: Analyzing trace with hash 2035533808, now seen corresponding path program 1 times [2018-06-22 10:44:34,230 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:44:34,230 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:44:34,231 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:34,231 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:34,231 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:34,269 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:34,454 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:44:34,454 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:44:34,454 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 [2018-06-22 10:44:34,461 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:34,520 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:34,524 INFO ]: Computing forward predicates... [2018-06-22 10:44:34,560 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:44:34,587 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:44:34,587 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-22 10:44:34,588 INFO ]: Interpolant automaton has 7 states [2018-06-22 10:44:34,588 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 10:44:34,588 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:44:34,588 INFO ]: Start difference. First operand 197 states and 587 transitions. Second operand 7 states. [2018-06-22 10:44:38,890 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:44:38,890 INFO ]: Finished difference Result 411 states and 2060 transitions. [2018-06-22 10:44:38,890 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 10:44:38,891 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 10:44:38,891 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:44:38,921 INFO ]: With dead ends: 411 [2018-06-22 10:44:38,921 INFO ]: Without dead ends: 411 [2018-06-22 10:44:38,924 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 10:44:38,924 INFO ]: Start minimizeSevpa. Operand 411 states. [2018-06-22 10:44:39,211 INFO ]: Finished minimizeSevpa. Reduced states from 411 to 408. [2018-06-22 10:44:39,211 INFO ]: Start removeUnreachable. Operand 408 states. [2018-06-22 10:44:39,229 INFO ]: Finished removeUnreachable. Reduced from 408 states to 408 states and 2053 transitions. [2018-06-22 10:44:39,230 INFO ]: Start accepts. Automaton has 408 states and 2053 transitions. Word has length 21 [2018-06-22 10:44:39,230 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:44:39,230 INFO ]: Abstraction has 408 states and 2053 transitions. [2018-06-22 10:44:39,230 INFO ]: Interpolant automaton has 7 states. [2018-06-22 10:44:39,230 INFO ]: Start isEmpty. Operand 408 states and 2053 transitions. [2018-06-22 10:44:39,237 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:44:39,237 INFO ]: Found error trace [2018-06-22 10:44:39,237 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:44:39,237 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:44:39,237 INFO ]: Analyzing trace with hash 705114617, now seen corresponding path program 1 times [2018-06-22 10:44:39,237 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:44:39,237 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:44:39,238 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:39,238 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:39,238 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:39,267 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:39,818 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:44:39,818 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:44:39,818 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) [2018-06-22 10:44:39,832 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:44:39,888 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:39,891 INFO ]: Computing forward predicates... [2018-06-22 10:44:39,911 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:44:39,947 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:44:39,947 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-22 10:44:39,947 INFO ]: Interpolant automaton has 7 states [2018-06-22 10:44:39,947 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 10:44:39,947 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:44:39,947 INFO ]: Start difference. First operand 408 states and 2053 transitions. Second operand 7 states. [2018-06-22 10:44:41,351 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:44:41,351 INFO ]: Finished difference Result 605 states and 3987 transitions. [2018-06-22 10:44:41,352 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 10:44:41,352 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 10:44:41,352 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:44:41,395 INFO ]: With dead ends: 605 [2018-06-22 10:44:41,395 INFO ]: Without dead ends: 605 [2018-06-22 10:44:41,395 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:44:41,396 INFO ]: Start minimizeSevpa. Operand 605 states. [2018-06-22 10:44:41,774 INFO ]: Finished minimizeSevpa. Reduced states from 605 to 588. [2018-06-22 10:44:41,774 INFO ]: Start removeUnreachable. Operand 588 states. [2018-06-22 10:44:41,798 INFO ]: Finished removeUnreachable. Reduced from 588 states to 588 states and 3906 transitions. [2018-06-22 10:44:41,798 INFO ]: Start accepts. Automaton has 588 states and 3906 transitions. Word has length 21 [2018-06-22 10:44:41,798 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:44:41,798 INFO ]: Abstraction has 588 states and 3906 transitions. [2018-06-22 10:44:41,798 INFO ]: Interpolant automaton has 7 states. [2018-06-22 10:44:41,798 INFO ]: Start isEmpty. Operand 588 states and 3906 transitions. [2018-06-22 10:44:41,805 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 10:44:41,805 INFO ]: Found error trace [2018-06-22 10:44:41,805 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:44:41,805 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:44:41,806 INFO ]: Analyzing trace with hash 1689272149, now seen corresponding path program 1 times [2018-06-22 10:44:41,806 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:44:41,806 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:44:41,807 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:41,807 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:41,807 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:41,830 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:42,243 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:44:42,243 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:44:42,243 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:44:42,254 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:42,307 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:42,309 INFO ]: Computing forward predicates... [2018-06-22 10:44:42,645 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 10:44:42,677 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:44:42,677 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 10:44:42,677 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:44:42,677 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:44:42,677 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:44:42,678 INFO ]: Start difference. First operand 588 states and 3906 transitions. Second operand 8 states. [2018-06-22 10:44:46,220 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:44:46,220 INFO ]: Finished difference Result 1169 states and 8688 transitions. [2018-06-22 10:44:46,221 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 10:44:46,221 INFO ]: Start accepts. Automaton has 8 states. Word has length 17 [2018-06-22 10:44:46,221 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:44:46,302 INFO ]: With dead ends: 1169 [2018-06-22 10:44:46,302 INFO ]: Without dead ends: 1169 [2018-06-22 10:44:46,302 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-06-22 10:44:46,304 INFO ]: Start minimizeSevpa. Operand 1169 states. [2018-06-22 10:44:47,153 INFO ]: Finished minimizeSevpa. Reduced states from 1169 to 1074. [2018-06-22 10:44:47,153 INFO ]: Start removeUnreachable. Operand 1074 states. [2018-06-22 10:44:47,215 INFO ]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 8014 transitions. [2018-06-22 10:44:47,215 INFO ]: Start accepts. Automaton has 1074 states and 8014 transitions. Word has length 17 [2018-06-22 10:44:47,215 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:44:47,216 INFO ]: Abstraction has 1074 states and 8014 transitions. [2018-06-22 10:44:47,216 INFO ]: Interpolant automaton has 8 states. [2018-06-22 10:44:47,216 INFO ]: Start isEmpty. Operand 1074 states and 8014 transitions. [2018-06-22 10:44:47,226 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:44:47,226 INFO ]: Found error trace [2018-06-22 10:44:47,226 INFO ]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:44:47,226 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:44:47,226 INFO ]: Analyzing trace with hash -1560481685, now seen corresponding path program 1 times [2018-06-22 10:44:47,226 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:44:47,226 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:44:47,227 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:47,227 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:47,227 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:47,253 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:47,361 INFO ]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 10:44:47,361 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:44:47,361 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:44:47,376 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:47,425 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:47,427 INFO ]: Computing forward predicates... [2018-06-22 10:44:47,438 INFO ]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 10:44:47,458 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:44:47,458 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 10:44:47,459 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:44:47,459 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:44:47,459 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:44:47,459 INFO ]: Start difference. First operand 1074 states and 8014 transitions. Second operand 8 states. [2018-06-22 10:44:49,297 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:44:49,297 INFO ]: Finished difference Result 1342 states and 15146 transitions. [2018-06-22 10:44:49,297 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 10:44:49,297 INFO ]: Start accepts. Automaton has 8 states. Word has length 25 [2018-06-22 10:44:49,297 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:44:49,425 INFO ]: With dead ends: 1342 [2018-06-22 10:44:49,425 INFO ]: Without dead ends: 1342 [2018-06-22 10:44:49,425 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 10:44:49,427 INFO ]: Start minimizeSevpa. Operand 1342 states. [2018-06-22 10:44:50,594 INFO ]: Finished minimizeSevpa. Reduced states from 1342 to 1291. [2018-06-22 10:44:50,595 INFO ]: Start removeUnreachable. Operand 1291 states. [2018-06-22 10:44:50,676 INFO ]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 14701 transitions. [2018-06-22 10:44:50,676 INFO ]: Start accepts. Automaton has 1291 states and 14701 transitions. Word has length 25 [2018-06-22 10:44:50,676 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:44:50,676 INFO ]: Abstraction has 1291 states and 14701 transitions. [2018-06-22 10:44:50,676 INFO ]: Interpolant automaton has 8 states. [2018-06-22 10:44:50,676 INFO ]: Start isEmpty. Operand 1291 states and 14701 transitions. [2018-06-22 10:44:50,691 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 10:44:50,691 INFO ]: Found error trace [2018-06-22 10:44:50,691 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:44:50,691 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:44:50,691 INFO ]: Analyzing trace with hash 1200344896, now seen corresponding path program 2 times [2018-06-22 10:44:50,692 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:44:50,692 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:44:50,692 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:50,692 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:50,692 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:50,711 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:50,907 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:44:50,907 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:44:50,907 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:44:50,913 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 10:44:50,984 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:44:50,984 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:50,988 INFO ]: Computing forward predicates... [2018-06-22 10:44:51,006 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:44:51,026 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:44:51,026 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-22 10:44:51,026 INFO ]: Interpolant automaton has 7 states [2018-06-22 10:44:51,026 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 10:44:51,026 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 10:44:51,026 INFO ]: Start difference. First operand 1291 states and 14701 transitions. Second operand 7 states. [2018-06-22 10:44:52,849 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:44:52,849 INFO ]: Finished difference Result 1371 states and 16457 transitions. [2018-06-22 10:44:52,849 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 10:44:52,849 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 10:44:52,849 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:44:52,956 INFO ]: With dead ends: 1371 [2018-06-22 10:44:52,956 INFO ]: Without dead ends: 1371 [2018-06-22 10:44:52,957 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 10:44:52,958 INFO ]: Start minimizeSevpa. Operand 1371 states. [2018-06-22 10:44:54,014 INFO ]: Finished minimizeSevpa. Reduced states from 1371 to 1334. [2018-06-22 10:44:54,014 INFO ]: Start removeUnreachable. Operand 1334 states. [2018-06-22 10:44:54,127 INFO ]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 16196 transitions. [2018-06-22 10:44:54,127 INFO ]: Start accepts. Automaton has 1334 states and 16196 transitions. Word has length 21 [2018-06-22 10:44:54,127 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:44:54,127 INFO ]: Abstraction has 1334 states and 16196 transitions. [2018-06-22 10:44:54,127 INFO ]: Interpolant automaton has 7 states. [2018-06-22 10:44:54,127 INFO ]: Start isEmpty. Operand 1334 states and 16196 transitions. [2018-06-22 10:44:54,141 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:44:54,141 INFO ]: Found error trace [2018-06-22 10:44:54,141 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:44:54,141 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:44:54,141 INFO ]: Analyzing trace with hash 233871716, now seen corresponding path program 1 times [2018-06-22 10:44:54,141 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:44:54,141 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:44:54,147 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:54,147 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 10:44:54,147 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:44:54,171 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:54,358 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:44:54,358 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:44:54,358 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:44:54,364 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:44:54,398 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:44:54,401 INFO ]: Computing forward predicates... [2018-06-22 10:44:54,414 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:44:54,442 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:44:54,442 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 10:44:54,442 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:44:54,442 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:44:54,442 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:44:54,442 INFO ]: Start difference. First operand 1334 states and 16196 transitions. Second operand 8 states. [2018-06-22 10:44:58,360 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:44:58,361 INFO ]: Finished difference Result 3593 states and 104048 transitions. [2018-06-22 10:44:58,361 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 10:44:58,361 INFO ]: Start accepts. Automaton has 8 states. Word has length 25 [2018-06-22 10:44:58,361 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:44:59,648 INFO ]: With dead ends: 3593 [2018-06-22 10:44:59,648 INFO ]: Without dead ends: 3593 [2018-06-22 10:44:59,648 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 10:44:59,653 INFO ]: Start minimizeSevpa. Operand 3593 states. [2018-06-22 10:45:10,754 INFO ]: Finished minimizeSevpa. Reduced states from 3593 to 3498. [2018-06-22 10:45:10,754 INFO ]: Start removeUnreachable. Operand 3498 states. [2018-06-22 10:45:11,283 INFO ]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 103303 transitions. [2018-06-22 10:45:11,283 INFO ]: Start accepts. Automaton has 3498 states and 103303 transitions. Word has length 25 [2018-06-22 10:45:11,283 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:45:11,283 INFO ]: Abstraction has 3498 states and 103303 transitions. [2018-06-22 10:45:11,283 INFO ]: Interpolant automaton has 8 states. [2018-06-22 10:45:11,283 INFO ]: Start isEmpty. Operand 3498 states and 103303 transitions. [2018-06-22 10:45:11,301 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 10:45:11,301 INFO ]: Found error trace [2018-06-22 10:45:11,301 INFO ]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:45:11,301 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:45:11,302 INFO ]: Analyzing trace with hash 1654284379, now seen corresponding path program 2 times [2018-06-22 10:45:11,302 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:45:11,302 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:45:11,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:45:11,303 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:45:11,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:45:11,324 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:45:11,474 INFO ]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 10:45:11,474 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:45:11,474 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:45:11,480 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 10:45:11,516 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:45:11,517 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:45:11,519 INFO ]: Computing forward predicates... [2018-06-22 10:45:11,528 INFO ]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 10:45:11,549 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:45:11,549 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 10:45:11,549 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:45:11,549 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:45:11,549 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:45:11,549 INFO ]: Start difference. First operand 3498 states and 103303 transitions. Second operand 8 states. Received shutdown request... [2018-06-22 10:45:29,272 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 10:45:29,272 WARN ]: Verification canceled [2018-06-22 10:45:29,276 WARN ]: Timeout [2018-06-22 10:45:29,277 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:45:29 BoogieIcfgContainer [2018-06-22 10:45:29,277 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 10:45:29,277 INFO ]: Toolchain (without parser) took 60209.29 ms. Allocated memory was 307.2 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 253.8 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 3.6 GB. [2018-06-22 10:45:29,280 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 10:45:29,281 INFO ]: ChcToBoogie took 87.51 ms. Allocated memory is still 307.2 MB. Free memory was 252.8 MB in the beginning and 249.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:45:29,281 INFO ]: Boogie Preprocessor took 55.86 ms. Allocated memory is still 307.2 MB. Free memory was 249.8 MB in the beginning and 247.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:45:29,281 INFO ]: RCFGBuilder took 857.12 ms. Allocated memory is still 307.2 MB. Free memory was 247.8 MB in the beginning and 206.8 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:45:29,282 INFO ]: TraceAbstraction took 59199.73 ms. Allocated memory was 307.2 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 205.8 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 3.6 GB. [2018-06-22 10:45:29,287 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 87.51 ms. Allocated memory is still 307.2 MB. Free memory was 252.8 MB in the beginning and 249.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 55.86 ms. Allocated memory is still 307.2 MB. Free memory was 249.8 MB in the beginning and 247.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 857.12 ms. Allocated memory is still 307.2 MB. Free memory was 247.8 MB in the beginning and 206.8 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59199.73 ms. Allocated memory was 307.2 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 205.8 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.9 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 (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (3498states) and interpolant automaton (currently 15 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (15157 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 162 locations, 1 error locations. TIMEOUT Result, 59.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 39.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3216 SDtfs, 176 SDslu, 13750 SDs, 0 SdLazy, 19118 SolverSat, 1874 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 248 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3498occurred in iteration=7, 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: 15.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 301 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 13104 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3347 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 16 InterpolantComputations, 0 PerfectInterpolantSequences, 52/148 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/point-location.45.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_10-45-29-303.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/point-location.45.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_10-45-29-303.csv Completed graceful shutdown