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/hopv/lia/mochi/sigma_sum.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:36:01,173 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:36:01,175 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:36:01,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:36:01,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:36:01,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:36:01,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:36:01,194 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:36:01,195 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:36:01,197 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:36:01,198 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:36:01,199 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:36:01,199 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:36:01,204 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:36:01,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:36:01,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:36:01,208 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:36:01,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:36:01,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:36:01,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:36:01,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:36:01,226 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:36:01,227 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:36:01,227 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:36:01,228 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:36:01,228 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:36:01,229 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:36:01,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:36:01,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:36:01,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:36:01,232 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:36:01,238 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:36:01,238 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:36:01,239 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:36:01,242 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:36:01,242 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 11:36:01,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:36:01,256 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:36:01,256 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:36:01,256 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:36:01,257 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:36:01,257 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:36:01,258 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:36:01,258 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:36:01,258 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:36:01,258 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:36:01,258 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:36:01,259 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:36:01,259 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:36:01,259 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:36:01,259 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:36:01,260 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:36:01,260 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:36:01,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:36:01,260 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:36:01,262 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:36:01,262 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:36:01,301 INFO ]: Repository-Root is: /tmp [2018-06-22 11:36:01,318 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:36:01,323 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:36:01,325 INFO ]: Initializing SmtParser... [2018-06-22 11:36:01,325 INFO ]: SmtParser initialized [2018-06-22 11:36:01,326 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 [2018-06-22 11:36:01,327 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 11:36:01,421 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 unknown [2018-06-22 11:36:01,584 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 [2018-06-22 11:36:01,595 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:36:01,601 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:36:01,601 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:36:01,601 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:36:01,602 INFO ]: ChcToBoogie initialized [2018-06-22 11:36:01,606 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:01" (1/1) ... [2018-06-22 11:36:01,655 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01 Unit [2018-06-22 11:36:01,655 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:36:01,656 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:36:01,656 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:36:01,656 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:36:01,681 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (1/1) ... [2018-06-22 11:36:01,685 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (1/1) ... [2018-06-22 11:36:01,693 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (1/1) ... [2018-06-22 11:36:01,693 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (1/1) ... [2018-06-22 11:36:01,696 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (1/1) ... [2018-06-22 11:36:01,699 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (1/1) ... [2018-06-22 11:36:01,700 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (1/1) ... [2018-06-22 11:36:01,701 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:36:01,705 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:36:01,705 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:36:01,705 INFO ]: RCFGBuilder initialized [2018-06-22 11:36:01,706 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (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 11:36:01,721 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:36:01,721 INFO ]: Found specification of procedure False [2018-06-22 11:36:01,721 INFO ]: Found implementation of procedure False [2018-06-22 11:36:01,721 INFO ]: Specification and implementation of procedure sigmaDLRunknownCLN4 given in one single declaration [2018-06-22 11:36:01,721 INFO ]: Found specification of procedure sigmaDLRunknownCLN4 [2018-06-22 11:36:01,721 INFO ]: Found implementation of procedure sigmaDLRunknownCLN4 [2018-06-22 11:36:01,721 INFO ]: Specification and implementation of procedure sigmaDLRunknownCLN2 given in one single declaration [2018-06-22 11:36:01,721 INFO ]: Found specification of procedure sigmaDLRunknownCLN2 [2018-06-22 11:36:01,721 INFO ]: Found implementation of procedure sigmaDLRunknownCLN2 [2018-06-22 11:36:01,721 INFO ]: Specification and implementation of procedure sumDLRunknownCLN6 given in one single declaration [2018-06-22 11:36:01,721 INFO ]: Found specification of procedure sumDLRunknownCLN6 [2018-06-22 11:36:01,721 INFO ]: Found implementation of procedure sumDLRunknownCLN6 [2018-06-22 11:36:01,721 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:36:01,721 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:36:01,721 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 11:36:02,082 INFO ]: Using library mode [2018-06-22 11:36:02,083 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:02 BoogieIcfgContainer [2018-06-22 11:36:02,083 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:36:02,085 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:36:02,085 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:36:02,088 INFO ]: TraceAbstraction initialized [2018-06-22 11:36:02,088 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:01" (1/3) ... [2018-06-22 11:36:02,089 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5d2d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:36:02, skipping insertion in model container [2018-06-22 11:36:02,089 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:01" (2/3) ... [2018-06-22 11:36:02,089 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5d2d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:36:02, skipping insertion in model container [2018-06-22 11:36:02,089 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:02" (3/3) ... [2018-06-22 11:36:02,092 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:36:02,101 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:36:02,119 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:36:02,166 INFO ]: Using default assertion order modulation [2018-06-22 11:36:02,167 INFO ]: Interprodecural is true [2018-06-22 11:36:02,167 INFO ]: Hoare is false [2018-06-22 11:36:02,167 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:36:02,167 INFO ]: Backedges is TWOTRACK [2018-06-22 11:36:02,167 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:36:02,167 INFO ]: Difference is false [2018-06-22 11:36:02,167 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:36:02,167 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:36:02,181 INFO ]: Start isEmpty. Operand 22 states. [2018-06-22 11:36:02,192 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:36:02,193 INFO ]: Found error trace [2018-06-22 11:36:02,194 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:36:02,194 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:02,200 INFO ]: Analyzing trace with hash 82772768, now seen corresponding path program 1 times [2018-06-22 11:36:02,202 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:02,202 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:02,242 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,242 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:02,242 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,258 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:02,281 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:02,283 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:02,283 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:36:02,284 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:36:02,298 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:36:02,298 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:36:02,301 INFO ]: Start difference. First operand 22 states. Second operand 2 states. [2018-06-22 11:36:02,332 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:02,333 INFO ]: Finished difference Result 20 states and 23 transitions. [2018-06-22 11:36:02,333 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:36:02,334 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:36:02,334 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:02,343 INFO ]: With dead ends: 20 [2018-06-22 11:36:02,343 INFO ]: Without dead ends: 20 [2018-06-22 11:36:02,345 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:36:02,364 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-22 11:36:02,390 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-06-22 11:36:02,391 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 11:36:02,392 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-06-22 11:36:02,394 INFO ]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 5 [2018-06-22 11:36:02,394 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:02,394 INFO ]: Abstraction has 20 states and 23 transitions. [2018-06-22 11:36:02,394 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:36:02,394 INFO ]: Start isEmpty. Operand 20 states and 23 transitions. [2018-06-22 11:36:02,395 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:36:02,395 INFO ]: Found error trace [2018-06-22 11:36:02,396 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:02,396 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:02,396 INFO ]: Analyzing trace with hash -803791043, now seen corresponding path program 1 times [2018-06-22 11:36:02,396 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:02,396 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:02,397 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,397 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:02,397 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,415 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:02,495 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:02,495 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:02,495 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:36:02,497 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:36:02,497 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:36:02,497 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:02,497 INFO ]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2018-06-22 11:36:02,522 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:02,522 INFO ]: Finished difference Result 22 states and 25 transitions. [2018-06-22 11:36:02,522 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:36:02,523 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:36:02,523 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:02,525 INFO ]: With dead ends: 22 [2018-06-22 11:36:02,525 INFO ]: Without dead ends: 22 [2018-06-22 11:36:02,525 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:02,525 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 11:36:02,532 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-06-22 11:36:02,532 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 11:36:02,535 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-06-22 11:36:02,535 INFO ]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2018-06-22 11:36:02,535 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:02,535 INFO ]: Abstraction has 22 states and 25 transitions. [2018-06-22 11:36:02,535 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:36:02,535 INFO ]: Start isEmpty. Operand 22 states and 25 transitions. [2018-06-22 11:36:02,536 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:36:02,536 INFO ]: Found error trace [2018-06-22 11:36:02,536 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:02,536 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:02,536 INFO ]: Analyzing trace with hash -1307782971, now seen corresponding path program 1 times [2018-06-22 11:36:02,536 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:02,536 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:02,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,537 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:02,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,550 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:02,666 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:02,666 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:02,666 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:36:02,667 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:36:02,667 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:36:02,668 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:36:02,668 INFO ]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2018-06-22 11:36:02,759 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:02,760 INFO ]: Finished difference Result 26 states and 29 transitions. [2018-06-22 11:36:02,760 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:36:02,760 INFO ]: Start accepts. Automaton has 5 states. Word has length 21 [2018-06-22 11:36:02,760 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:02,761 INFO ]: With dead ends: 26 [2018-06-22 11:36:02,761 INFO ]: Without dead ends: 24 [2018-06-22 11:36:02,762 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:36:02,762 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 11:36:02,767 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-06-22 11:36:02,767 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 11:36:02,768 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-06-22 11:36:02,768 INFO ]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 21 [2018-06-22 11:36:02,768 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:02,768 INFO ]: Abstraction has 24 states and 27 transitions. [2018-06-22 11:36:02,768 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:36:02,769 INFO ]: Start isEmpty. Operand 24 states and 27 transitions. [2018-06-22 11:36:02,769 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:36:02,769 INFO ]: Found error trace [2018-06-22 11:36:02,770 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:02,770 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:02,770 INFO ]: Analyzing trace with hash -73886937, now seen corresponding path program 1 times [2018-06-22 11:36:02,770 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:02,770 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:02,771 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,771 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:02,771 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:02,804 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:03,213 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:36:03,214 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:03,214 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 11:36:03,226 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:03,248 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:03,257 INFO ]: Computing forward predicates... [2018-06-22 11:36:03,302 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:36:03,326 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:03,326 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-06-22 11:36:03,326 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:36:03,327 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:36:03,327 INFO ]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:36:03,327 INFO ]: Start difference. First operand 24 states and 27 transitions. Second operand 11 states. [2018-06-22 11:36:03,957 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:03,958 INFO ]: Finished difference Result 33 states and 42 transitions. [2018-06-22 11:36:03,959 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:36:03,959 INFO ]: Start accepts. Automaton has 11 states. Word has length 25 [2018-06-22 11:36:03,959 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:03,960 INFO ]: With dead ends: 33 [2018-06-22 11:36:03,960 INFO ]: Without dead ends: 33 [2018-06-22 11:36:03,961 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:36:03,961 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-22 11:36:03,971 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 31. [2018-06-22 11:36:03,971 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 11:36:03,975 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2018-06-22 11:36:03,975 INFO ]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 25 [2018-06-22 11:36:03,975 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:03,975 INFO ]: Abstraction has 31 states and 38 transitions. [2018-06-22 11:36:03,975 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:36:03,975 INFO ]: Start isEmpty. Operand 31 states and 38 transitions. [2018-06-22 11:36:03,977 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:36:03,977 INFO ]: Found error trace [2018-06-22 11:36:03,977 INFO ]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:03,977 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:03,977 INFO ]: Analyzing trace with hash 340567697, now seen corresponding path program 2 times [2018-06-22 11:36:03,977 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:03,977 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:03,980 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:03,980 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:03,980 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:04,016 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:04,249 INFO ]: Checked inductivity of 34 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 11:36:04,250 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:04,250 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 11:36:04,265 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:36:04,325 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:36:04,325 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:04,329 INFO ]: Computing forward predicates... [2018-06-22 11:36:04,394 INFO ]: Checked inductivity of 34 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 11:36:04,424 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:04,424 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-06-22 11:36:04,424 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:36:04,424 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:36:04,424 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:36:04,425 INFO ]: Start difference. First operand 31 states and 38 transitions. Second operand 9 states. [2018-06-22 11:36:04,690 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:04,691 INFO ]: Finished difference Result 31 states and 36 transitions. [2018-06-22 11:36:04,691 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:36:04,691 INFO ]: Start accepts. Automaton has 9 states. Word has length 41 [2018-06-22 11:36:04,691 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:04,692 INFO ]: With dead ends: 31 [2018-06-22 11:36:04,692 INFO ]: Without dead ends: 31 [2018-06-22 11:36:04,693 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:36:04,693 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 11:36:04,698 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-22 11:36:04,698 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 11:36:04,699 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-06-22 11:36:04,699 INFO ]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 41 [2018-06-22 11:36:04,699 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:04,699 INFO ]: Abstraction has 31 states and 36 transitions. [2018-06-22 11:36:04,699 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:36:04,699 INFO ]: Start isEmpty. Operand 31 states and 36 transitions. [2018-06-22 11:36:04,700 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:36:04,700 INFO ]: Found error trace [2018-06-22 11:36:04,701 INFO ]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:04,701 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:04,701 INFO ]: Analyzing trace with hash -1458533623, now seen corresponding path program 3 times [2018-06-22 11:36:04,701 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:04,701 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:04,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:04,702 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:36:04,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:04,727 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:04,834 INFO ]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:36:04,834 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:04,834 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 11:36:04,848 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:36:04,899 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 11:36:04,899 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:04,903 INFO ]: Computing forward predicates... [2018-06-22 11:36:04,927 INFO ]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:36:04,961 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:04,961 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-06-22 11:36:04,961 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:36:04,961 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:36:04,961 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:36:04,961 INFO ]: Start difference. First operand 31 states and 36 transitions. Second operand 9 states. [2018-06-22 11:36:05,123 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:05,124 INFO ]: Finished difference Result 31 states and 35 transitions. [2018-06-22 11:36:05,124 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:36:05,124 INFO ]: Start accepts. Automaton has 9 states. Word has length 29 [2018-06-22 11:36:05,124 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:05,125 INFO ]: With dead ends: 31 [2018-06-22 11:36:05,125 INFO ]: Without dead ends: 31 [2018-06-22 11:36:05,125 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:36:05,125 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 11:36:05,129 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-22 11:36:05,129 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 11:36:05,131 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-06-22 11:36:05,131 INFO ]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 29 [2018-06-22 11:36:05,132 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:05,132 INFO ]: Abstraction has 31 states and 35 transitions. [2018-06-22 11:36:05,132 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:36:05,132 INFO ]: Start isEmpty. Operand 31 states and 35 transitions. [2018-06-22 11:36:05,133 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:36:05,133 INFO ]: Found error trace [2018-06-22 11:36:05,133 INFO ]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:05,133 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:05,133 INFO ]: Analyzing trace with hash 250387059, now seen corresponding path program 4 times [2018-06-22 11:36:05,133 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:05,133 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:05,134 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:05,134 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:36:05,134 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:05,149 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:05,365 INFO ]: Checked inductivity of 48 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 11:36:05,365 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:05,365 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 11:36:05,372 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:36:05,409 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:36:05,409 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:05,414 INFO ]: Computing forward predicates... [2018-06-22 11:36:05,516 INFO ]: Checked inductivity of 48 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 11:36:05,549 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:05,549 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-06-22 11:36:05,549 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:36:05,549 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:36:05,550 INFO ]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:36:05,550 INFO ]: Start difference. First operand 31 states and 35 transitions. Second operand 16 states. [2018-06-22 11:36:05,862 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:05,862 INFO ]: Finished difference Result 27 states and 31 transitions. [2018-06-22 11:36:05,865 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:36:05,865 INFO ]: Start accepts. Automaton has 16 states. Word has length 45 [2018-06-22 11:36:05,866 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:05,866 INFO ]: With dead ends: 27 [2018-06-22 11:36:05,866 INFO ]: Without dead ends: 0 [2018-06-22 11:36:05,866 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:36:05,866 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:36:05,866 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:36:05,866 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:36:05,866 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:36:05,866 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-06-22 11:36:05,866 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:05,866 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:36:05,866 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:36:05,866 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:36:05,866 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:36:05,873 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:36:05 BoogieIcfgContainer [2018-06-22 11:36:05,873 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:36:05,874 INFO ]: Toolchain (without parser) took 4279.10 ms. Allocated memory was 308.8 MB in the beginning and 345.0 MB in the end (delta: 36.2 MB). Free memory was 265.2 MB in the beginning and 287.0 MB in the end (delta: -21.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,876 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:36:05,876 INFO ]: ChcToBoogie took 54.09 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,877 INFO ]: Boogie Preprocessor took 45.52 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 261.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,877 INFO ]: RCFGBuilder took 378.22 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 253.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,878 INFO ]: TraceAbstraction took 3788.86 ms. Allocated memory was 308.8 MB in the beginning and 345.0 MB in the end (delta: 36.2 MB). Free memory was 253.2 MB in the beginning and 287.0 MB in the end (delta: -33.8 MB). Peak memory consumption was 2.4 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:05,882 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.09 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.52 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 261.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 378.22 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 253.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3788.86 ms. Allocated memory was 308.8 MB in the beginning and 345.0 MB in the end (delta: 36.2 MB). Free memory was 253.2 MB in the beginning and 287.0 MB in the end (delta: -33.8 MB). Peak memory consumption was 2.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. SAFE Result, 3.7s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 155 SDtfs, 22 SDslu, 611 SDs, 0 SdLazy, 461 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 219 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, 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, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 315 NumberOfCodeBlocks, 315 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 23712 SizeOfPredicates, 30 NumberOfNonLiveVariables, 428 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 127/205 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sigma_sum.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-36-05-892.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sigma_sum.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-36-05-892.csv Received shutdown request...