java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/009b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:01:40,042 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:01:40,044 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:01:40,057 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:01:40,057 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:01:40,058 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:01:40,059 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:01:40,063 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:01:40,064 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:01:40,065 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:01:40,067 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:01:40,067 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:01:40,068 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:01:40,069 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:01:40,070 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:01:40,073 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:01:40,074 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:01:40,087 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:01:40,089 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:01:40,090 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:01:40,091 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:01:40,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:01:40,093 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:01:40,093 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:01:40,094 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:01:40,095 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:01:40,101 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:01:40,102 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:01:40,102 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:01:40,103 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:01:40,103 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:01:40,104 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:01:40,104 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:01:40,105 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:01:40,105 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:01:40,106 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:01:40,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:01:40,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:01:40,129 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:01:40,129 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:01:40,130 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:01:40,130 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:01:40,131 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:01:40,135 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:01:40,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:01:40,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:01:40,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:01:40,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:01:40,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:01:40,136 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:01:40,136 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:01:40,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:01:40,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:01:40,137 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:01:40,137 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:01:40,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:01:40,137 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:01:40,139 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:01:40,139 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:01:40,184 INFO ]: Repository-Root is: /tmp [2018-06-24 21:01:40,197 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:01:40,202 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:01:40,204 INFO ]: Initializing SmtParser... [2018-06-24 21:01:40,204 INFO ]: SmtParser initialized [2018-06-24 21:01:40,205 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/009b-horn.smt2 [2018-06-24 21:01:40,206 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 [2018-06-24 21:01:40,287 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/009b-horn.smt2 unknown [2018-06-24 21:01:40,794 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/009b-horn.smt2 [2018-06-24 21:01:40,800 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:01:40,805 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:01:40,805 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:01:40,805 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:01:40,805 INFO ]: ChcToBoogie initialized [2018-06-24 21:01:40,808 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:01:40" (1/1) ... [2018-06-24 21:01:40,881 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40 Unit [2018-06-24 21:01:40,881 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:01:40,882 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:01:40,882 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:01:40,882 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:01:40,904 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (1/1) ... [2018-06-24 21:01:40,904 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (1/1) ... [2018-06-24 21:01:40,927 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (1/1) ... [2018-06-24 21:01:40,927 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (1/1) ... [2018-06-24 21:01:40,948 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (1/1) ... [2018-06-24 21:01:40,960 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (1/1) ... [2018-06-24 21:01:40,963 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (1/1) ... [2018-06-24 21:01:40,967 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:01:40,977 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:01:40,977 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:01:40,977 INFO ]: RCFGBuilder initialized [2018-06-24 21:01:40,978 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:01:40,996 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:01:40,996 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:01:40,996 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:01:40,996 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:01:40,996 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:01:40,996 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 [2018-06-24 21:01:42,030 INFO ]: Using library mode [2018-06-24 21:01:42,031 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:01:42 BoogieIcfgContainer [2018-06-24 21:01:42,031 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:01:42,031 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:01:42,031 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:01:42,032 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:01:42,033 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:01:42" (1/1) ... [2018-06-24 21:01:42,052 INFO ]: Initial Icfg 10 locations, 38 edges [2018-06-24 21:01:42,053 INFO ]: Using Remove infeasible edges [2018-06-24 21:01:42,054 INFO ]: Using Maximize final states [2018-06-24 21:01:42,056 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:01:42,057 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:01:42,060 INFO ]: Using Remove sink states [2018-06-24 21:01:42,060 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:01:42,060 INFO ]: Using Use SBE [2018-06-24 21:01:42,076 INFO ]: SBE split 0 edges [2018-06-24 21:01:42,091 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:01:42,092 INFO ]: 0 new accepting states [2018-06-24 21:01:42,133 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:01:42,135 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:01:42,144 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:01:42,144 INFO ]: 0 new accepting states [2018-06-24 21:01:42,144 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:01:42,144 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:01:42,145 INFO ]: Encoded RCFG 6 locations, 34 edges [2018-06-24 21:01:42,145 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:01:42 BasicIcfg [2018-06-24 21:01:42,145 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:01:42,146 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:01:42,146 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:01:42,150 INFO ]: TraceAbstraction initialized [2018-06-24 21:01:42,151 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:01:40" (1/4) ... [2018-06-24 21:01:42,151 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422ee922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:01:42, skipping insertion in model container [2018-06-24 21:01:42,151 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:01:40" (2/4) ... [2018-06-24 21:01:42,152 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422ee922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:01:42, skipping insertion in model container [2018-06-24 21:01:42,152 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:01:42" (3/4) ... [2018-06-24 21:01:42,152 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422ee922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:01:42, skipping insertion in model container [2018-06-24 21:01:42,152 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:01:42" (4/4) ... [2018-06-24 21:01:42,154 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:01:42,163 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:01:42,170 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:01:42,217 INFO ]: Using default assertion order modulation [2018-06-24 21:01:42,217 INFO ]: Interprodecural is true [2018-06-24 21:01:42,217 INFO ]: Hoare is false [2018-06-24 21:01:42,217 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:01:42,217 INFO ]: Backedges is TWOTRACK [2018-06-24 21:01:42,217 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:01:42,217 INFO ]: Difference is false [2018-06-24 21:01:42,217 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:01:42,217 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:01:42,237 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:01:42,250 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:01:42,250 INFO ]: Found error trace [2018-06-24 21:01:42,251 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:01:42,251 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:42,256 INFO ]: Analyzing trace with hash 34417442, now seen corresponding path program 1 times [2018-06-24 21:01:42,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:42,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:42,302 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:42,302 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:42,302 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:42,347 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:42,449 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:42,451 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:01:42,451 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:01:42,453 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:01:42,467 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:01:42,468 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:01:42,471 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:01:43,185 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:43,185 INFO ]: Finished difference Result 7 states and 63 transitions. [2018-06-24 21:01:43,186 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:01:43,186 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:01:43,187 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:43,195 INFO ]: With dead ends: 7 [2018-06-24 21:01:43,195 INFO ]: Without dead ends: 7 [2018-06-24 21:01:43,197 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:01:43,210 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:01:43,226 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:01:43,228 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:01:43,228 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2018-06-24 21:01:43,230 INFO ]: Start accepts. Automaton has 7 states and 63 transitions. Word has length 5 [2018-06-24 21:01:43,230 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:43,230 INFO ]: Abstraction has 7 states and 63 transitions. [2018-06-24 21:01:43,230 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:01:43,230 INFO ]: Start isEmpty. Operand 7 states and 63 transitions. [2018-06-24 21:01:43,231 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:01:43,231 INFO ]: Found error trace [2018-06-24 21:01:43,231 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:01:43,231 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:43,231 INFO ]: Analyzing trace with hash 1065960608, now seen corresponding path program 1 times [2018-06-24 21:01:43,231 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:43,231 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:43,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:43,232 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:43,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:43,246 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:43,402 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:43,402 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:43,402 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 [2018-06-24 21:01:43,408 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:43,448 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:43,455 INFO ]: Computing forward predicates... [2018-06-24 21:01:43,659 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:43,692 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:01:43,692 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 21:01:43,693 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:01:43,693 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:01:43,693 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:01:43,693 INFO ]: Start difference. First operand 7 states and 63 transitions. Second operand 5 states. [2018-06-24 21:01:43,989 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-06-24 21:01:45,057 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:45,057 INFO ]: Finished difference Result 11 states and 159 transitions. [2018-06-24 21:01:45,057 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:01:45,057 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:01:45,058 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:45,059 INFO ]: With dead ends: 11 [2018-06-24 21:01:45,059 INFO ]: Without dead ends: 11 [2018-06-24 21:01:45,059 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:45,059 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 21:01:45,062 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 21:01:45,062 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 21:01:45,064 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2018-06-24 21:01:45,064 INFO ]: Start accepts. Automaton has 11 states and 159 transitions. Word has length 6 [2018-06-24 21:01:45,064 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:45,064 INFO ]: Abstraction has 11 states and 159 transitions. [2018-06-24 21:01:45,064 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:01:45,064 INFO ]: Start isEmpty. Operand 11 states and 159 transitions. [2018-06-24 21:01:45,064 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:01:45,064 INFO ]: Found error trace [2018-06-24 21:01:45,064 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:01:45,065 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:45,065 INFO ]: Analyzing trace with hash 1066020190, now seen corresponding path program 1 times [2018-06-24 21:01:45,065 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:45,065 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:45,066 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:45,066 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:45,066 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:45,076 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:45,127 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:45,127 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:45,127 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 [2018-06-24 21:01:45,134 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:45,154 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:45,155 INFO ]: Computing forward predicates... [2018-06-24 21:01:45,169 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:45,189 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:01:45,189 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 21:01:45,189 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:01:45,189 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:01:45,189 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:01:45,189 INFO ]: Start difference. First operand 11 states and 159 transitions. Second operand 5 states. [2018-06-24 21:01:45,658 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:45,658 INFO ]: Finished difference Result 16 states and 294 transitions. [2018-06-24 21:01:45,658 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:01:45,658 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:01:45,658 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:45,659 INFO ]: With dead ends: 16 [2018-06-24 21:01:45,660 INFO ]: Without dead ends: 16 [2018-06-24 21:01:45,660 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:45,660 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-24 21:01:45,664 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-06-24 21:01:45,664 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:01:45,665 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 265 transitions. [2018-06-24 21:01:45,665 INFO ]: Start accepts. Automaton has 15 states and 265 transitions. Word has length 6 [2018-06-24 21:01:45,666 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:45,666 INFO ]: Abstraction has 15 states and 265 transitions. [2018-06-24 21:01:45,666 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:01:45,666 INFO ]: Start isEmpty. Operand 15 states and 265 transitions. [2018-06-24 21:01:45,666 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:01:45,666 INFO ]: Found error trace [2018-06-24 21:01:45,666 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:01:45,666 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:45,666 INFO ]: Analyzing trace with hash 1066079772, now seen corresponding path program 1 times [2018-06-24 21:01:45,667 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:45,667 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:45,667 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:45,667 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:45,667 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:45,678 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:45,715 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:45,715 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:45,715 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:01:45,722 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:45,750 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:45,752 INFO ]: Computing forward predicates... [2018-06-24 21:01:45,754 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:45,787 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:01:45,787 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-24 21:01:45,787 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:01:45,787 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:01:45,788 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:01:45,788 INFO ]: Start difference. First operand 15 states and 265 transitions. Second operand 4 states. [2018-06-24 21:01:46,330 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:46,330 INFO ]: Finished difference Result 23 states and 467 transitions. [2018-06-24 21:01:46,331 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:01:46,331 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 21:01:46,331 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:46,332 INFO ]: With dead ends: 23 [2018-06-24 21:01:46,332 INFO ]: Without dead ends: 23 [2018-06-24 21:01:46,332 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:01:46,332 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-24 21:01:46,337 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-24 21:01:46,337 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-24 21:01:46,339 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 467 transitions. [2018-06-24 21:01:46,339 INFO ]: Start accepts. Automaton has 23 states and 467 transitions. Word has length 6 [2018-06-24 21:01:46,340 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:46,340 INFO ]: Abstraction has 23 states and 467 transitions. [2018-06-24 21:01:46,340 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:01:46,340 INFO ]: Start isEmpty. Operand 23 states and 467 transitions. [2018-06-24 21:01:46,341 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:01:46,341 INFO ]: Found error trace [2018-06-24 21:01:46,341 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:01:46,341 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:46,341 INFO ]: Analyzing trace with hash 1066109563, now seen corresponding path program 1 times [2018-06-24 21:01:46,341 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:46,341 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:46,342 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:46,342 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:46,342 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:46,365 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:46,433 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:46,433 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:46,433 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 [2018-06-24 21:01:46,439 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:46,459 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:46,460 INFO ]: Computing forward predicates... [2018-06-24 21:01:46,470 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:46,489 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:01:46,489 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 21:01:46,490 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:01:46,490 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:01:46,490 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:01:46,490 INFO ]: Start difference. First operand 23 states and 467 transitions. Second operand 5 states. [2018-06-24 21:01:46,871 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:46,871 INFO ]: Finished difference Result 34 states and 662 transitions. [2018-06-24 21:01:46,871 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:01:46,871 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:01:46,871 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:46,872 INFO ]: With dead ends: 34 [2018-06-24 21:01:46,872 INFO ]: Without dead ends: 34 [2018-06-24 21:01:46,873 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:46,873 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-24 21:01:46,878 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 28. [2018-06-24 21:01:46,878 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-24 21:01:46,880 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 545 transitions. [2018-06-24 21:01:46,880 INFO ]: Start accepts. Automaton has 28 states and 545 transitions. Word has length 6 [2018-06-24 21:01:46,880 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:46,880 INFO ]: Abstraction has 28 states and 545 transitions. [2018-06-24 21:01:46,880 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:01:46,880 INFO ]: Start isEmpty. Operand 28 states and 545 transitions. [2018-06-24 21:01:46,881 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:01:46,881 INFO ]: Found error trace [2018-06-24 21:01:46,881 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:01:46,881 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:46,881 INFO ]: Analyzing trace with hash -1315373585, now seen corresponding path program 1 times [2018-06-24 21:01:46,881 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:46,881 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:46,882 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:46,882 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:46,882 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:46,908 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:46,954 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:46,954 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:01:46,954 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:01:46,954 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:01:46,954 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:01:46,954 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:01:46,954 INFO ]: Start difference. First operand 28 states and 545 transitions. Second operand 3 states. [2018-06-24 21:01:47,063 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:01:47,063 INFO ]: Finished difference Result 20 states and 124 transitions. [2018-06-24 21:01:47,064 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:01:47,064 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-24 21:01:47,064 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:01:47,064 INFO ]: With dead ends: 20 [2018-06-24 21:01:47,064 INFO ]: Without dead ends: 15 [2018-06-24 21:01:47,065 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:01:47,065 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-24 21:01:47,067 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 12. [2018-06-24 21:01:47,067 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-24 21:01:47,067 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 74 transitions. [2018-06-24 21:01:47,067 INFO ]: Start accepts. Automaton has 12 states and 74 transitions. Word has length 7 [2018-06-24 21:01:47,067 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:01:47,067 INFO ]: Abstraction has 12 states and 74 transitions. [2018-06-24 21:01:47,067 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:01:47,067 INFO ]: Start isEmpty. Operand 12 states and 74 transitions. [2018-06-24 21:01:47,070 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:01:47,070 INFO ]: Found error trace [2018-06-24 21:01:47,070 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:01:47,070 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:01:47,070 INFO ]: Analyzing trace with hash -1290766219, now seen corresponding path program 1 times [2018-06-24 21:01:47,070 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:01:47,070 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:01:47,071 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:47,071 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:47,071 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:01:47,121 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:47,231 INFO ]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:47,231 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:01:47,231 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 [2018-06-24 21:01:47,239 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:01:47,281 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:01:47,282 INFO ]: Computing forward predicates... [2018-06-24 21:01:47,501 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:01:47,520 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:01:47,520 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-06-24 21:01:47,520 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:01:47,521 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:01:47,521 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:01:47,521 INFO ]: Start difference. First operand 12 states and 74 transitions. Second operand 7 states. [2018-06-24 21:02:35,047 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:02:35,047 INFO ]: Finished difference Result 17 states and 79 transitions. [2018-06-24 21:02:35,048 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:02:35,048 INFO ]: Start accepts. Automaton has 7 states. Word has length 7 [2018-06-24 21:02:35,048 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:02:35,048 INFO ]: With dead ends: 17 [2018-06-24 21:02:35,048 INFO ]: Without dead ends: 12 [2018-06-24 21:02:35,048 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:02:35,048 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-24 21:02:35,049 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-24 21:02:35,049 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-24 21:02:35,050 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 70 transitions. [2018-06-24 21:02:35,050 INFO ]: Start accepts. Automaton has 12 states and 70 transitions. Word has length 7 [2018-06-24 21:02:35,050 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:02:35,050 INFO ]: Abstraction has 12 states and 70 transitions. [2018-06-24 21:02:35,050 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:02:35,050 INFO ]: Start isEmpty. Operand 12 states and 70 transitions. [2018-06-24 21:02:35,050 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:02:35,050 INFO ]: Found error trace [2018-06-24 21:02:35,050 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:02:35,050 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:02:35,051 INFO ]: Analyzing trace with hash -1314896929, now seen corresponding path program 1 times [2018-06-24 21:02:35,051 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:02:35,051 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:02:35,051 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:02:35,051 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:02:35,051 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:02:35,065 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:02:35,103 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:02:35,103 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:02:35,104 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:02:35,104 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:02:35,104 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:02:35,104 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:02:35,104 INFO ]: Start difference. First operand 12 states and 70 transitions. Second operand 3 states. [2018-06-24 21:02:35,184 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:02:35,184 INFO ]: Finished difference Result 13 states and 44 transitions. [2018-06-24 21:02:35,184 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:02:35,184 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-24 21:02:35,185 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:02:35,185 INFO ]: With dead ends: 13 [2018-06-24 21:02:35,185 INFO ]: Without dead ends: 12 [2018-06-24 21:02:35,185 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:02:35,185 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-24 21:02:35,186 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-24 21:02:35,187 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-24 21:02:35,187 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 39 transitions. [2018-06-24 21:02:35,187 INFO ]: Start accepts. Automaton has 12 states and 39 transitions. Word has length 7 [2018-06-24 21:02:35,187 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:02:35,187 INFO ]: Abstraction has 12 states and 39 transitions. [2018-06-24 21:02:35,187 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:02:35,187 INFO ]: Start isEmpty. Operand 12 states and 39 transitions. [2018-06-24 21:02:35,187 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:02:35,187 INFO ]: Found error trace [2018-06-24 21:02:35,187 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:02:35,187 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:02:35,188 INFO ]: Analyzing trace with hash -1309236639, now seen corresponding path program 1 times [2018-06-24 21:02:35,188 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:02:35,188 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:02:35,188 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:02:35,188 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:02:35,188 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:02:35,214 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:02:35,354 INFO ]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:02:35,354 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:02:35,354 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 [2018-06-24 21:02:35,360 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:02:35,401 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:02:35,404 INFO ]: Computing forward predicates... [2018-06-24 21:02:35,975 WARN ]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-06-24 21:02:35,979 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:02:35,998 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:02:35,998 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-24 21:02:35,998 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:02:35,998 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:02:35,998 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:02:35,999 INFO ]: Start difference. First operand 12 states and 39 transitions. Second operand 8 states. [2018-06-24 21:02:36,464 WARN ]: Spent 440.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 10 [2018-06-24 21:02:57,092 WARN ]: Spent 1.21 s on a formula simplification. DAG size of input: 51 DAG size of output: 47 Received shutdown request... [2018-06-24 21:03:00,337 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 21:03:00,337 WARN ]: Verification canceled [2018-06-24 21:03:00,339 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:03:00,340 WARN ]: Timeout [2018-06-24 21:03:00,340 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:03:00 BasicIcfg [2018-06-24 21:03:00,340 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:03:00,341 INFO ]: Toolchain (without parser) took 79540.88 ms. Allocated memory was 309.3 MB in the beginning and 393.2 MB in the end (delta: 83.9 MB). Free memory was 234.8 MB in the beginning and 227.8 MB in the end (delta: 7.1 MB). Peak memory consumption was 91.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:03:00,343 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:03:00,343 INFO ]: ChcToBoogie took 76.41 ms. Allocated memory is still 309.3 MB. Free memory was 233.8 MB in the beginning and 230.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:03:00,344 INFO ]: Boogie Preprocessor took 85.53 ms. Allocated memory is still 309.3 MB. Free memory was 230.8 MB in the beginning and 228.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:03:00,344 INFO ]: RCFGBuilder took 1054.08 ms. Allocated memory was 309.3 MB in the beginning and 330.3 MB in the end (delta: 21.0 MB). Free memory was 228.8 MB in the beginning and 285.1 MB in the end (delta: -56.3 MB). Peak memory consumption was 45.8 MB. Max. memory is 3.6 GB. [2018-06-24 21:03:00,345 INFO ]: BlockEncodingV2 took 113.76 ms. Allocated memory is still 330.3 MB. Free memory was 285.1 MB in the beginning and 281.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 3.6 GB. [2018-06-24 21:03:00,345 INFO ]: TraceAbstraction took 78194.40 ms. Allocated memory was 330.3 MB in the beginning and 393.2 MB in the end (delta: 62.9 MB). Free memory was 279.6 MB in the beginning and 227.8 MB in the end (delta: 51.9 MB). Peak memory consumption was 114.8 MB. Max. memory is 3.6 GB. [2018-06-24 21:03:00,357 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 38 edges - StatisticsResult: Encoded RCFG 6 locations, 34 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 76.41 ms. Allocated memory is still 309.3 MB. Free memory was 233.8 MB in the beginning and 230.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 85.53 ms. Allocated memory is still 309.3 MB. Free memory was 230.8 MB in the beginning and 228.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1054.08 ms. Allocated memory was 309.3 MB in the beginning and 330.3 MB in the end (delta: 21.0 MB). Free memory was 228.8 MB in the beginning and 285.1 MB in the end (delta: -56.3 MB). Peak memory consumption was 45.8 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 113.76 ms. Allocated memory is still 330.3 MB. Free memory was 285.1 MB in the beginning and 281.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 78194.40 ms. Allocated memory was 330.3 MB in the beginning and 393.2 MB in the end (delta: 62.9 MB). Free memory was 279.6 MB in the beginning and 227.8 MB in the end (delta: 51.9 MB). Peak memory consumption was 114.8 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (12states) and interpolant automaton (currently 9 states, 8 states before enhancement), while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 78.1s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 75.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 92 SDtfs, 6 SDslu, 59 SDs, 0 SdLazy, 922 SolverSat, 399 SolverUnsat, 23 SolverUnknown, 0 SolverNotchecked, 54.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=5, 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, 8 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 80 ConstructedInterpolants, 4 QuantifiedInterpolants, 2093 SizeOfPredicates, 17 NumberOfNonLiveVariables, 781 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 13/26 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/009b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-03-00-375.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/009b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-03-00-375.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/009b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-03-00-375.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/009b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-03-00-375.csv Completed graceful shutdown