java -Xss4m -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_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:24:31,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:24:31,944 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:24:31,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:24:31,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:24:31,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:24:31,959 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:24:31,961 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:24:31,963 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:24:31,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:24:31,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:24:31,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:24:31,967 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:24:31,968 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:24:31,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:24:31,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:24:31,974 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:24:31,976 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:24:31,978 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:24:31,979 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:24:31,980 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:24:31,982 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:24:31,983 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:24:31,983 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:24:31,984 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:24:31,985 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:24:31,985 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:24:31,986 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:24:31,987 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:24:31,987 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:24:31,988 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:24:31,989 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:24:31,989 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:24:31,990 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:24:31,990 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:24:31,991 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:24:32,004 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:24:32,005 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:24:32,005 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:24:32,005 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:24:32,006 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:24:32,006 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:24:32,007 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:24:32,007 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:24:32,007 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:24:32,007 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:24:32,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:24:32,008 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:24:32,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:24:32,008 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:24:32,008 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:24:32,008 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:24:32,009 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:24:32,009 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:24:32,009 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:24:32,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:24:32,009 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:24:32,011 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:24:32,011 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:24:32,046 INFO ]: Repository-Root is: /tmp [2018-06-25 09:24:32,064 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:24:32,068 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:24:32,070 INFO ]: Initializing SmtParser... [2018-06-25 09:24:32,070 INFO ]: SmtParser initialized [2018-06-25 09:24:32,071 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 [2018-06-25 09:24:32,072 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 [2018-06-25 09:24:32,159 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 unknown [2018-06-25 09:24:32,403 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 [2018-06-25 09:24:32,408 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:24:32,413 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:24:32,414 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:24:32,414 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:24:32,414 INFO ]: ChcToBoogie initialized [2018-06-25 09:24:32,417 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:24:32" (1/1) ... [2018-06-25 09:24:32,475 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32 Unit [2018-06-25 09:24:32,475 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:24:32,476 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:24:32,476 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:24:32,476 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:24:32,497 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (1/1) ... [2018-06-25 09:24:32,497 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (1/1) ... [2018-06-25 09:24:32,503 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (1/1) ... [2018-06-25 09:24:32,503 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (1/1) ... [2018-06-25 09:24:32,508 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (1/1) ... [2018-06-25 09:24:32,510 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (1/1) ... [2018-06-25 09:24:32,511 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (1/1) ... [2018-06-25 09:24:32,522 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:24:32,522 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:24:32,523 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:24:32,523 INFO ]: RCFGBuilder initialized [2018-06-25 09:24:32,523 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (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) [2018-06-25 09:24:32,543 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:24:32,543 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:24:32,543 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:24:32,543 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:24:32,543 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:24:32,543 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 [2018-06-25 09:24:33,044 INFO ]: Using library mode [2018-06-25 09:24:33,045 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:24:33 BoogieIcfgContainer [2018-06-25 09:24:33,045 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:24:33,055 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:24:33,055 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:24:33,058 INFO ]: TraceAbstraction initialized [2018-06-25 09:24:33,058 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:24:32" (1/3) ... [2018-06-25 09:24:33,059 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65556cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:24:33, skipping insertion in model container [2018-06-25 09:24:33,059 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:24:32" (2/3) ... [2018-06-25 09:24:33,059 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65556cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:24:33, skipping insertion in model container [2018-06-25 09:24:33,059 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:24:33" (3/3) ... [2018-06-25 09:24:33,061 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:24:33,069 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:24:33,076 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:24:33,114 INFO ]: Using default assertion order modulation [2018-06-25 09:24:33,114 INFO ]: Interprodecural is true [2018-06-25 09:24:33,114 INFO ]: Hoare is false [2018-06-25 09:24:33,114 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:24:33,114 INFO ]: Backedges is TWOTRACK [2018-06-25 09:24:33,114 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:24:33,115 INFO ]: Difference is false [2018-06-25 09:24:33,115 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:24:33,115 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:24:33,132 INFO ]: Start isEmpty. Operand 29 states. [2018-06-25 09:24:33,149 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 09:24:33,150 INFO ]: Found error trace [2018-06-25 09:24:33,150 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:33,151 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:33,156 INFO ]: Analyzing trace with hash 2091904116, now seen corresponding path program 1 times [2018-06-25 09:24:33,158 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:33,158 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:33,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:33,195 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:33,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:33,225 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:33,260 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:24:33,264 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:33,264 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:24:33,266 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:24:33,280 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:24:33,280 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:24:33,282 INFO ]: Start difference. First operand 29 states. Second operand 2 states. [2018-06-25 09:24:33,300 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:33,300 INFO ]: Finished difference Result 27 states and 37 transitions. [2018-06-25 09:24:33,300 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:24:33,302 INFO ]: Start accepts. Automaton has 2 states. Word has length 10 [2018-06-25 09:24:33,302 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:33,310 INFO ]: With dead ends: 27 [2018-06-25 09:24:33,310 INFO ]: Without dead ends: 27 [2018-06-25 09:24:33,311 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 [2018-06-25 09:24:33,326 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-25 09:24:33,347 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-25 09:24:33,348 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-25 09:24:33,350 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2018-06-25 09:24:33,351 INFO ]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 10 [2018-06-25 09:24:33,351 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:33,351 INFO ]: Abstraction has 27 states and 37 transitions. [2018-06-25 09:24:33,351 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:24:33,352 INFO ]: Start isEmpty. Operand 27 states and 37 transitions. [2018-06-25 09:24:33,353 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 09:24:33,353 INFO ]: Found error trace [2018-06-25 09:24:33,353 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:33,353 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:33,353 INFO ]: Analyzing trace with hash -167123240, now seen corresponding path program 1 times [2018-06-25 09:24:33,353 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:33,353 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:33,354 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:33,354 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:33,354 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:33,360 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:33,435 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:24:33,435 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:33,435 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:24:33,437 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:33,437 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:33,437 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:33,437 INFO ]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2018-06-25 09:24:33,937 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:33,938 INFO ]: Finished difference Result 48 states and 67 transitions. [2018-06-25 09:24:33,938 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:33,938 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-25 09:24:33,938 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:33,940 INFO ]: With dead ends: 48 [2018-06-25 09:24:33,940 INFO ]: Without dead ends: 48 [2018-06-25 09:24:33,941 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:33,941 INFO ]: Start minimizeSevpa. Operand 48 states. [2018-06-25 09:24:33,950 INFO ]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-06-25 09:24:33,950 INFO ]: Start removeUnreachable. Operand 48 states. [2018-06-25 09:24:33,953 INFO ]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2018-06-25 09:24:33,953 INFO ]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 11 [2018-06-25 09:24:33,953 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:33,953 INFO ]: Abstraction has 48 states and 67 transitions. [2018-06-25 09:24:33,953 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:33,953 INFO ]: Start isEmpty. Operand 48 states and 67 transitions. [2018-06-25 09:24:33,955 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 09:24:33,955 INFO ]: Found error trace [2018-06-25 09:24:33,955 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:33,955 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:33,955 INFO ]: Analyzing trace with hash 373262753, now seen corresponding path program 1 times [2018-06-25 09:24:33,955 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:33,955 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:33,956 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:33,956 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:33,956 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:33,962 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:34,001 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:24:34,001 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:34,001 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:24:34,001 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:34,001 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:34,001 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:34,001 INFO ]: Start difference. First operand 48 states and 67 transitions. Second operand 4 states. [2018-06-25 09:24:34,222 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:34,222 INFO ]: Finished difference Result 65 states and 92 transitions. [2018-06-25 09:24:34,222 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:34,222 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-25 09:24:34,222 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:34,225 INFO ]: With dead ends: 65 [2018-06-25 09:24:34,225 INFO ]: Without dead ends: 65 [2018-06-25 09:24:34,226 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:34,226 INFO ]: Start minimizeSevpa. Operand 65 states. [2018-06-25 09:24:34,235 INFO ]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-06-25 09:24:34,235 INFO ]: Start removeUnreachable. Operand 65 states. [2018-06-25 09:24:34,237 INFO ]: Finished removeUnreachable. Reduced from 65 states to 65 states and 92 transitions. [2018-06-25 09:24:34,238 INFO ]: Start accepts. Automaton has 65 states and 92 transitions. Word has length 11 [2018-06-25 09:24:34,238 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:34,238 INFO ]: Abstraction has 65 states and 92 transitions. [2018-06-25 09:24:34,238 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:34,238 INFO ]: Start isEmpty. Operand 65 states and 92 transitions. [2018-06-25 09:24:34,240 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 09:24:34,240 INFO ]: Found error trace [2018-06-25 09:24:34,240 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:34,240 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:34,240 INFO ]: Analyzing trace with hash 1621008314, now seen corresponding path program 1 times [2018-06-25 09:24:34,240 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:34,240 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:34,241 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:34,241 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:34,241 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:34,255 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:34,366 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:24:34,366 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:34,366 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-25 09:24:34,366 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:24:34,366 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:24:34,366 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:34,367 INFO ]: Start difference. First operand 65 states and 92 transitions. Second operand 5 states. [2018-06-25 09:24:34,591 WARN ]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-25 09:24:34,675 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:34,675 INFO ]: Finished difference Result 117 states and 225 transitions. [2018-06-25 09:24:34,677 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:34,677 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-25 09:24:34,677 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:34,687 INFO ]: With dead ends: 117 [2018-06-25 09:24:34,687 INFO ]: Without dead ends: 117 [2018-06-25 09:24:34,687 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-25 09:24:34,687 INFO ]: Start minimizeSevpa. Operand 117 states. [2018-06-25 09:24:34,715 INFO ]: Finished minimizeSevpa. Reduced states from 117 to 72. [2018-06-25 09:24:34,715 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-25 09:24:34,717 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2018-06-25 09:24:34,717 INFO ]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 13 [2018-06-25 09:24:34,717 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:34,717 INFO ]: Abstraction has 72 states and 101 transitions. [2018-06-25 09:24:34,717 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:24:34,717 INFO ]: Start isEmpty. Operand 72 states and 101 transitions. [2018-06-25 09:24:34,721 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-25 09:24:34,721 INFO ]: Found error trace [2018-06-25 09:24:34,721 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:34,721 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:34,721 INFO ]: Analyzing trace with hash -439552812, now seen corresponding path program 1 times [2018-06-25 09:24:34,721 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:34,721 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:34,722 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:34,722 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:34,722 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:34,739 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:34,813 INFO ]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 09:24:34,813 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:34,813 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:24:34,814 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:34,814 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:34,814 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:34,814 INFO ]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2018-06-25 09:24:35,214 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:35,214 INFO ]: Finished difference Result 111 states and 155 transitions. [2018-06-25 09:24:35,214 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:35,214 INFO ]: Start accepts. Automaton has 4 states. Word has length 24 [2018-06-25 09:24:35,215 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:35,216 INFO ]: With dead ends: 111 [2018-06-25 09:24:35,216 INFO ]: Without dead ends: 96 [2018-06-25 09:24:35,216 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:35,216 INFO ]: Start minimizeSevpa. Operand 96 states. [2018-06-25 09:24:35,224 INFO ]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-06-25 09:24:35,224 INFO ]: Start removeUnreachable. Operand 96 states. [2018-06-25 09:24:35,226 INFO ]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2018-06-25 09:24:35,226 INFO ]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 24 [2018-06-25 09:24:35,227 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:35,227 INFO ]: Abstraction has 96 states and 130 transitions. [2018-06-25 09:24:35,227 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:35,227 INFO ]: Start isEmpty. Operand 96 states and 130 transitions. [2018-06-25 09:24:35,230 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-25 09:24:35,230 INFO ]: Found error trace [2018-06-25 09:24:35,231 INFO ]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:35,231 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:35,231 INFO ]: Analyzing trace with hash -160020633, now seen corresponding path program 1 times [2018-06-25 09:24:35,231 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:35,231 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:35,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:35,232 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:35,232 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:35,279 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:35,376 INFO ]: Checked inductivity of 24 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-25 09:24:35,376 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:24:35,376 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 [2018-06-25 09:24:35,385 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:35,427 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:35,436 INFO ]: Computing forward predicates... [2018-06-25 09:24:35,658 INFO ]: Checked inductivity of 24 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-25 09:24:35,680 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:24:35,680 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 11 [2018-06-25 09:24:35,681 INFO ]: Interpolant automaton has 11 states [2018-06-25 09:24:35,681 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-25 09:24:35,681 INFO ]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-06-25 09:24:35,681 INFO ]: Start difference. First operand 96 states and 130 transitions. Second operand 11 states. [2018-06-25 09:24:37,297 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:37,298 INFO ]: Finished difference Result 253 states and 567 transitions. [2018-06-25 09:24:37,298 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-25 09:24:37,298 INFO ]: Start accepts. Automaton has 11 states. Word has length 37 [2018-06-25 09:24:37,298 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:37,304 INFO ]: With dead ends: 253 [2018-06-25 09:24:37,304 INFO ]: Without dead ends: 227 [2018-06-25 09:24:37,305 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2018-06-25 09:24:37,305 INFO ]: Start minimizeSevpa. Operand 227 states. [2018-06-25 09:24:37,342 INFO ]: Finished minimizeSevpa. Reduced states from 227 to 122. [2018-06-25 09:24:37,342 INFO ]: Start removeUnreachable. Operand 122 states. [2018-06-25 09:24:37,344 INFO ]: Finished removeUnreachable. Reduced from 122 states to 122 states and 173 transitions. [2018-06-25 09:24:37,344 INFO ]: Start accepts. Automaton has 122 states and 173 transitions. Word has length 37 [2018-06-25 09:24:37,344 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:37,344 INFO ]: Abstraction has 122 states and 173 transitions. [2018-06-25 09:24:37,344 INFO ]: Interpolant automaton has 11 states. [2018-06-25 09:24:37,345 INFO ]: Start isEmpty. Operand 122 states and 173 transitions. [2018-06-25 09:24:37,348 INFO ]: Finished isEmpty. Found accepting run of length 49 [2018-06-25 09:24:37,348 INFO ]: Found error trace [2018-06-25 09:24:37,348 INFO ]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:37,348 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:37,348 INFO ]: Analyzing trace with hash 1499207911, now seen corresponding path program 1 times [2018-06-25 09:24:37,348 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:37,348 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:37,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:37,349 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:37,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:37,358 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:37,358 INFO ]: Advancing trace checker [2018-06-25 09:24:37,358 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 (exit command is (exit), workingDir is null) [2018-06-25 09:24:37,372 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:37,408 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:37,416 INFO ]: Computing forward predicates... [2018-06-25 09:24:37,464 INFO ]: Checked inductivity of 54 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-25 09:24:37,495 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:24:37,495 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:24:37,496 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:37,496 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:37,496 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:37,496 INFO ]: Start difference. First operand 122 states and 173 transitions. Second operand 4 states. [2018-06-25 09:24:37,572 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:37,572 INFO ]: Finished difference Result 146 states and 208 transitions. [2018-06-25 09:24:37,572 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:37,572 INFO ]: Start accepts. Automaton has 4 states. Word has length 48 [2018-06-25 09:24:37,572 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:37,574 INFO ]: With dead ends: 146 [2018-06-25 09:24:37,574 INFO ]: Without dead ends: 146 [2018-06-25 09:24:37,574 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:37,575 INFO ]: Start minimizeSevpa. Operand 146 states. [2018-06-25 09:24:37,587 INFO ]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-06-25 09:24:37,587 INFO ]: Start removeUnreachable. Operand 146 states. [2018-06-25 09:24:37,590 INFO ]: Finished removeUnreachable. Reduced from 146 states to 146 states and 208 transitions. [2018-06-25 09:24:37,590 INFO ]: Start accepts. Automaton has 146 states and 208 transitions. Word has length 48 [2018-06-25 09:24:37,590 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:37,590 INFO ]: Abstraction has 146 states and 208 transitions. [2018-06-25 09:24:37,590 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:37,590 INFO ]: Start isEmpty. Operand 146 states and 208 transitions. [2018-06-25 09:24:37,597 INFO ]: Finished isEmpty. Found accepting run of length 95 [2018-06-25 09:24:37,597 INFO ]: Found error trace [2018-06-25 09:24:37,597 INFO ]: trace histogram [8, 8, 8, 7, 7, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:37,597 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:37,597 INFO ]: Analyzing trace with hash -1187435719, now seen corresponding path program 1 times [2018-06-25 09:24:37,597 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:37,597 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:37,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:37,598 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:37,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:37,607 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:37,607 INFO ]: Advancing trace checker [2018-06-25 09:24:37,607 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 (exit command is (exit), workingDir is null) [2018-06-25 09:24:37,624 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:37,700 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:37,707 INFO ]: Computing forward predicates... [2018-06-25 09:24:37,780 INFO ]: Checked inductivity of 233 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-06-25 09:24:37,810 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:37,810 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-06-25 09:24:37,810 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:37,810 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:37,810 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:37,810 INFO ]: Start difference. First operand 146 states and 208 transitions. Second operand 4 states. [2018-06-25 09:24:37,867 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:37,867 INFO ]: Finished difference Result 156 states and 221 transitions. [2018-06-25 09:24:37,867 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:37,867 INFO ]: Start accepts. Automaton has 4 states. Word has length 94 [2018-06-25 09:24:37,867 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:37,869 INFO ]: With dead ends: 156 [2018-06-25 09:24:37,869 INFO ]: Without dead ends: 137 [2018-06-25 09:24:37,869 INFO ]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:37,870 INFO ]: Start minimizeSevpa. Operand 137 states. [2018-06-25 09:24:37,879 INFO ]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-06-25 09:24:37,879 INFO ]: Start removeUnreachable. Operand 137 states. [2018-06-25 09:24:37,881 INFO ]: Finished removeUnreachable. Reduced from 137 states to 137 states and 192 transitions. [2018-06-25 09:24:37,881 INFO ]: Start accepts. Automaton has 137 states and 192 transitions. Word has length 94 [2018-06-25 09:24:37,881 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:37,881 INFO ]: Abstraction has 137 states and 192 transitions. [2018-06-25 09:24:37,881 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:37,881 INFO ]: Start isEmpty. Operand 137 states and 192 transitions. [2018-06-25 09:24:37,885 INFO ]: Finished isEmpty. Found accepting run of length 82 [2018-06-25 09:24:37,885 INFO ]: Found error trace [2018-06-25 09:24:37,885 INFO ]: trace histogram [7, 7, 7, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:37,885 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:37,885 INFO ]: Analyzing trace with hash -1394118546, now seen corresponding path program 2 times [2018-06-25 09:24:37,885 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:37,885 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:37,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:37,886 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:37,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:37,893 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:37,893 INFO ]: Advancing trace checker [2018-06-25 09:24:37,893 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 (exit command is (exit), workingDir is null) [2018-06-25 09:24:37,909 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:37,976 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:24:37,976 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:37,983 INFO ]: Computing forward predicates... [2018-06-25 09:24:38,185 INFO ]: Checked inductivity of 167 backedges. 97 proven. 19 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-06-25 09:24:38,216 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:38,216 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-06-25 09:24:38,216 INFO ]: Interpolant automaton has 9 states [2018-06-25 09:24:38,216 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-25 09:24:38,216 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-25 09:24:38,217 INFO ]: Start difference. First operand 137 states and 192 transitions. Second operand 9 states. [2018-06-25 09:24:38,943 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:38,943 INFO ]: Finished difference Result 227 states and 405 transitions. [2018-06-25 09:24:38,943 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-25 09:24:38,943 INFO ]: Start accepts. Automaton has 9 states. Word has length 81 [2018-06-25 09:24:38,944 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:38,948 INFO ]: With dead ends: 227 [2018-06-25 09:24:38,948 INFO ]: Without dead ends: 197 [2018-06-25 09:24:38,948 INFO ]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-06-25 09:24:38,948 INFO ]: Start minimizeSevpa. Operand 197 states. [2018-06-25 09:24:38,961 INFO ]: Finished minimizeSevpa. Reduced states from 197 to 132. [2018-06-25 09:24:38,961 INFO ]: Start removeUnreachable. Operand 132 states. [2018-06-25 09:24:38,963 INFO ]: Finished removeUnreachable. Reduced from 132 states to 132 states and 182 transitions. [2018-06-25 09:24:38,963 INFO ]: Start accepts. Automaton has 132 states and 182 transitions. Word has length 81 [2018-06-25 09:24:38,963 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:38,963 INFO ]: Abstraction has 132 states and 182 transitions. [2018-06-25 09:24:38,963 INFO ]: Interpolant automaton has 9 states. [2018-06-25 09:24:38,963 INFO ]: Start isEmpty. Operand 132 states and 182 transitions. [2018-06-25 09:24:38,969 INFO ]: Finished isEmpty. Found accepting run of length 174 [2018-06-25 09:24:38,969 INFO ]: Found error trace [2018-06-25 09:24:38,969 INFO ]: trace histogram [15, 15, 15, 13, 12, 11, 7, 7, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:38,969 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:38,969 INFO ]: Analyzing trace with hash -709378201, now seen corresponding path program 1 times [2018-06-25 09:24:38,969 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:38,970 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:38,970 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:38,970 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:24:38,970 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:38,983 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:38,983 INFO ]: Advancing trace checker [2018-06-25 09:24:38,983 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 (exit command is (exit), workingDir is null) [2018-06-25 09:24:38,998 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:39,102 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:39,112 INFO ]: Computing forward predicates... [2018-06-25 09:24:39,327 INFO ]: Checked inductivity of 864 backedges. 496 proven. 52 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-06-25 09:24:39,348 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:39,349 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-06-25 09:24:39,349 INFO ]: Interpolant automaton has 14 states [2018-06-25 09:24:39,349 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 09:24:39,349 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-25 09:24:39,349 INFO ]: Start difference. First operand 132 states and 182 transitions. Second operand 14 states. [2018-06-25 09:24:40,111 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:40,111 INFO ]: Finished difference Result 237 states and 461 transitions. [2018-06-25 09:24:40,111 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-25 09:24:40,111 INFO ]: Start accepts. Automaton has 14 states. Word has length 173 [2018-06-25 09:24:40,112 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:40,115 INFO ]: With dead ends: 237 [2018-06-25 09:24:40,116 INFO ]: Without dead ends: 237 [2018-06-25 09:24:40,116 INFO ]: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2018-06-25 09:24:40,116 INFO ]: Start minimizeSevpa. Operand 237 states. [2018-06-25 09:24:40,134 INFO ]: Finished minimizeSevpa. Reduced states from 237 to 173. [2018-06-25 09:24:40,134 INFO ]: Start removeUnreachable. Operand 173 states. [2018-06-25 09:24:40,138 INFO ]: Finished removeUnreachable. Reduced from 173 states to 173 states and 257 transitions. [2018-06-25 09:24:40,138 INFO ]: Start accepts. Automaton has 173 states and 257 transitions. Word has length 173 [2018-06-25 09:24:40,138 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:40,138 INFO ]: Abstraction has 173 states and 257 transitions. [2018-06-25 09:24:40,138 INFO ]: Interpolant automaton has 14 states. [2018-06-25 09:24:40,138 INFO ]: Start isEmpty. Operand 173 states and 257 transitions. [2018-06-25 09:24:40,147 INFO ]: Finished isEmpty. Found accepting run of length 281 [2018-06-25 09:24:40,147 INFO ]: Found error trace [2018-06-25 09:24:40,147 INFO ]: trace histogram [24, 24, 24, 21, 21, 20, 11, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:40,147 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:40,148 INFO ]: Analyzing trace with hash -1441962283, now seen corresponding path program 1 times [2018-06-25 09:24:40,148 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:40,148 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:40,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:40,148 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:40,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:40,171 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:40,175 INFO ]: Advancing trace checker [2018-06-25 09:24:40,175 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 (exit command is (exit), workingDir is null) [2018-06-25 09:24:40,189 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:40,361 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:40,373 INFO ]: Computing forward predicates... [2018-06-25 09:24:40,459 INFO ]: Checked inductivity of 2391 backedges. 710 proven. 3 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2018-06-25 09:24:40,492 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:40,492 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-06-25 09:24:40,493 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:24:40,493 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:24:40,493 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:24:40,493 INFO ]: Start difference. First operand 173 states and 257 transitions. Second operand 4 states. [2018-06-25 09:24:40,848 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:40,848 INFO ]: Finished difference Result 199 states and 298 transitions. [2018-06-25 09:24:40,849 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:24:40,849 INFO ]: Start accepts. Automaton has 4 states. Word has length 280 [2018-06-25 09:24:40,849 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:40,850 INFO ]: With dead ends: 199 [2018-06-25 09:24:40,850 INFO ]: Without dead ends: 163 [2018-06-25 09:24:40,850 INFO ]: 0 DeclaredPredicates, 281 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:24:40,851 INFO ]: Start minimizeSevpa. Operand 163 states. [2018-06-25 09:24:40,859 INFO ]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-06-25 09:24:40,859 INFO ]: Start removeUnreachable. Operand 163 states. [2018-06-25 09:24:40,861 INFO ]: Finished removeUnreachable. Reduced from 163 states to 163 states and 238 transitions. [2018-06-25 09:24:40,861 INFO ]: Start accepts. Automaton has 163 states and 238 transitions. Word has length 280 [2018-06-25 09:24:40,862 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:40,862 INFO ]: Abstraction has 163 states and 238 transitions. [2018-06-25 09:24:40,862 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:24:40,862 INFO ]: Start isEmpty. Operand 163 states and 238 transitions. [2018-06-25 09:24:40,867 INFO ]: Finished isEmpty. Found accepting run of length 198 [2018-06-25 09:24:40,867 INFO ]: Found error trace [2018-06-25 09:24:40,867 INFO ]: trace histogram [17, 17, 17, 15, 13, 13, 8, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-25 09:24:40,867 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:40,868 INFO ]: Analyzing trace with hash 968315924, now seen corresponding path program 2 times [2018-06-25 09:24:40,868 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:40,868 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:40,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:40,868 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:24:40,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:40,880 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:40,880 INFO ]: Advancing trace checker [2018-06-25 09:24:40,880 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:40,906 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 09:24:41,008 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:24:41,008 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:41,016 INFO ]: Computing forward predicates... [2018-06-25 09:24:41,234 INFO ]: Checked inductivity of 1130 backedges. 649 proven. 81 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-06-25 09:24:41,253 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:41,253 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-06-25 09:24:41,253 INFO ]: Interpolant automaton has 18 states [2018-06-25 09:24:41,254 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-25 09:24:41,254 INFO ]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-06-25 09:24:41,254 INFO ]: Start difference. First operand 163 states and 238 transitions. Second operand 18 states. [2018-06-25 09:24:43,303 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:43,303 INFO ]: Finished difference Result 278 states and 566 transitions. [2018-06-25 09:24:43,303 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-25 09:24:43,303 INFO ]: Start accepts. Automaton has 18 states. Word has length 197 [2018-06-25 09:24:43,304 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:43,308 INFO ]: With dead ends: 278 [2018-06-25 09:24:43,308 INFO ]: Without dead ends: 265 [2018-06-25 09:24:43,308 INFO ]: 0 DeclaredPredicates, 232 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=1499, Unknown=0, NotChecked=0, Total=1722 [2018-06-25 09:24:43,309 INFO ]: Start minimizeSevpa. Operand 265 states. [2018-06-25 09:24:43,331 INFO ]: Finished minimizeSevpa. Reduced states from 265 to 197. [2018-06-25 09:24:43,331 INFO ]: Start removeUnreachable. Operand 197 states. [2018-06-25 09:24:43,334 INFO ]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2018-06-25 09:24:43,334 INFO ]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 197 [2018-06-25 09:24:43,335 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:43,335 INFO ]: Abstraction has 197 states and 286 transitions. [2018-06-25 09:24:43,335 INFO ]: Interpolant automaton has 18 states. [2018-06-25 09:24:43,335 INFO ]: Start isEmpty. Operand 197 states and 286 transitions. [2018-06-25 09:24:43,342 INFO ]: Finished isEmpty. Found accepting run of length 242 [2018-06-25 09:24:43,342 INFO ]: Found error trace [2018-06-25 09:24:43,342 INFO ]: trace histogram [21, 21, 21, 18, 17, 15, 10, 10, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-06-25 09:24:43,342 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:24:43,342 INFO ]: Analyzing trace with hash -1026715877, now seen corresponding path program 3 times [2018-06-25 09:24:43,342 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:24:43,342 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:24:43,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:43,343 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:24:43,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:24:43,361 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-25 09:24:43,361 INFO ]: Advancing trace checker [2018-06-25 09:24:43,361 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-25 09:24:43,381 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 09:24:43,493 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-06-25 09:24:43,494 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:24:43,502 INFO ]: Computing forward predicates... [2018-06-25 09:24:43,760 INFO ]: Checked inductivity of 1737 backedges. 198 proven. 23 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2018-06-25 09:24:43,781 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:24:43,781 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-06-25 09:24:43,781 INFO ]: Interpolant automaton has 13 states [2018-06-25 09:24:43,782 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 09:24:43,782 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-25 09:24:43,782 INFO ]: Start difference. First operand 197 states and 286 transitions. Second operand 13 states. [2018-06-25 09:24:44,196 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:24:44,197 INFO ]: Finished difference Result 185 states and 303 transitions. [2018-06-25 09:24:44,197 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-06-25 09:24:44,197 INFO ]: Start accepts. Automaton has 13 states. Word has length 241 [2018-06-25 09:24:44,197 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:24:44,197 INFO ]: With dead ends: 185 [2018-06-25 09:24:44,197 INFO ]: Without dead ends: 0 [2018-06-25 09:24:44,197 INFO ]: 0 DeclaredPredicates, 256 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2018-06-25 09:24:44,197 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:24:44,197 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:24:44,197 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:24:44,197 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:24:44,197 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2018-06-25 09:24:44,198 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:24:44,198 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:24:44,198 INFO ]: Interpolant automaton has 13 states. [2018-06-25 09:24:44,198 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:24:44,198 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:24:44,202 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:24:44 BoogieIcfgContainer [2018-06-25 09:24:44,202 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:24:44,203 INFO ]: Toolchain (without parser) took 11794.56 ms. Allocated memory was 308.8 MB in the beginning and 485.0 MB in the end (delta: 176.2 MB). Free memory was 262.2 MB in the beginning and 418.6 MB in the end (delta: -156.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:44,203 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:24:44,204 INFO ]: ChcToBoogie took 62.21 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:44,204 INFO ]: Boogie Preprocessor took 45.65 ms. Allocated memory is still 308.8 MB. Free memory was 259.1 MB in the beginning and 258.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 09:24:44,205 INFO ]: RCFGBuilder took 522.68 ms. Allocated memory is still 308.8 MB. Free memory was 258.1 MB in the beginning and 245.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:44,205 INFO ]: TraceAbstraction took 11146.87 ms. Allocated memory was 308.8 MB in the beginning and 485.0 MB in the end (delta: 176.2 MB). Free memory was 245.1 MB in the beginning and 418.6 MB in the end (delta: -173.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 3.6 GB. [2018-06-25 09:24:44,210 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 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.21 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.65 ms. Allocated memory is still 308.8 MB. Free memory was 259.1 MB in the beginning and 258.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 522.68 ms. Allocated memory is still 308.8 MB. Free memory was 258.1 MB in the beginning and 245.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 11146.87 ms. Allocated memory was 308.8 MB in the beginning and 485.0 MB in the end (delta: 176.2 MB). Free memory was 245.1 MB in the beginning and 418.6 MB in the end (delta: -173.5 MB). Peak memory consumption was 2.7 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 2 procedures, 29 locations, 1 error locations. SAFE Result, 11.0s OverallTime, 13 OverallIterations, 24 TraceHistogramMax, 7.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 739 SDtfs, 953 SDslu, 3050 SDs, 0 SdLazy, 4624 SolverSat, 879 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1290 GetRequests, 1136 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=12, 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 347 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1257 NumberOfCodeBlocks, 1157 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1243 ConstructedInterpolants, 0 QuantifiedInterpolants, 278949 SizeOfPredicates, 61 NumberOfNonLiveVariables, 4577 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 6445/6632 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/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-24-44-228.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-24-44-228.csv Received shutdown request...