java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/array-examples/standard_strcpy_original_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-10 13:33:11,203 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 13:33:11,205 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 13:33:11,218 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 13:33:11,219 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 13:33:11,220 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 13:33:11,220 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 13:33:11,222 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 13:33:11,224 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 13:33:11,224 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 13:33:11,225 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 13:33:11,225 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 13:33:11,226 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 13:33:11,227 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 13:33:11,228 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 13:33:11,230 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 13:33:11,231 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 13:33:11,233 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 13:33:11,234 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 13:33:11,235 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 13:33:11,236 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-10 13:33:11,237 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-10 13:33:11,237 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-10 13:33:11,238 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-10 13:33:11,238 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-10 13:33:11,239 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-10 13:33:11,239 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-10 13:33:11,240 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-10 13:33:11,241 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-10 13:33:11,241 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 13:33:11,241 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 13:33:11,241 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-04-10 13:33:11,253 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 13:33:11,253 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 13:33:11,254 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-10 13:33:11,254 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-10 13:33:11,254 INFO L133 SettingsManager]: * Use SBE=true [2018-04-10 13:33:11,255 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 13:33:11,255 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 13:33:11,255 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 13:33:11,255 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 13:33:11,255 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 13:33:11,255 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 13:33:11,255 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 13:33:11,256 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-10 13:33:11,256 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 13:33:11,256 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 13:33:11,256 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 13:33:11,256 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-10 13:33:11,256 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-10 13:33:11,257 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 13:33:11,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 13:33:11,257 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 13:33:11,257 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-10 13:33:11,257 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-10 13:33:11,257 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-04-10 13:33:11,286 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 13:33:11,296 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 13:33:11,299 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 13:33:11,300 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 13:33:11,300 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 13:33:11,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_original_false-valid-deref.i [2018-04-10 13:33:11,583 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGb51c4ef75 [2018-04-10 13:33:11,692 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 13:33:11,692 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 13:33:11,693 INFO L168 CDTParser]: Scanning standard_strcpy_original_false-valid-deref.i [2018-04-10 13:33:11,693 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 13:33:11,693 INFO L215 ultiparseSymbolTable]: [2018-04-10 13:33:11,693 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 13:33:11,694 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in standard_strcpy_original_false-valid-deref.i [2018-04-10 13:33:11,694 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fstandard_strcpy_original_false_valid_deref_i____VERIFIER_assert ('__VERIFIER_assert') in standard_strcpy_original_false-valid-deref.i [2018-04-10 13:33:11,694 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 13:33:11,694 INFO L233 ultiparseSymbolTable]: [2018-04-10 13:33:11,704 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGb51c4ef75 [2018-04-10 13:33:11,708 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 13:33:11,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-10 13:33:11,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 13:33:11,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 13:33:11,712 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 13:33:11,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3928087d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11, skipping insertion in model container [2018-04-10 13:33:11,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,725 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 13:33:11,735 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 13:33:11,833 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 13:33:11,844 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 13:33:11,847 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 5 non ball SCCs. Number of states in SCCs 5. [2018-04-10 13:33:11,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11 WrapperNode [2018-04-10 13:33:11,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 13:33:11,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 13:33:11,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 13:33:11,851 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 13:33:11,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (1/1) ... [2018-04-10 13:33:11,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 13:33:11,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 13:33:11,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 13:33:11,871 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 13:33:11,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 13:33:11,903 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 13:33:11,903 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 13:33:11,903 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fstandard_strcpy_original_false_valid_deref_i____VERIFIER_assert [2018-04-10 13:33:11,903 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 13:33:11,903 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-04-10 13:33:11,904 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fstandard_strcpy_original_false_valid_deref_i____VERIFIER_assert [2018-04-10 13:33:11,904 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 13:33:11,904 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 13:33:11,904 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 13:33:12,058 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 13:33:12,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 01:33:12 BoogieIcfgContainer [2018-04-10 13:33:12,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 13:33:12,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 13:33:12,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 13:33:12,060 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 13:33:12,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 01:33:11" (1/3) ... [2018-04-10 13:33:12,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106950bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 01:33:12, skipping insertion in model container [2018-04-10 13:33:12,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:33:11" (2/3) ... [2018-04-10 13:33:12,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106950bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 01:33:12, skipping insertion in model container [2018-04-10 13:33:12,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 01:33:12" (3/3) ... [2018-04-10 13:33:12,062 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original_false-valid-deref.i [2018-04-10 13:33:12,067 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-10 13:33:12,072 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-04-10 13:33:12,092 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 13:33:12,093 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 13:33:12,093 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-10 13:33:12,093 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-10 13:33:12,093 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-10 13:33:12,093 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 13:33:12,093 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 13:33:12,093 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 13:33:12,093 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 13:33:12,093 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 13:33:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-04-10 13:33:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-04-10 13:33:12,109 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:12,109 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:12,109 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:12,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1734705512, now seen corresponding path program 1 times [2018-04-10 13:33:12,115 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:12,115 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:12,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:12,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:12,172 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,206 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:33:12,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-04-10 13:33:12,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-10 13:33:12,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-10 13:33:12,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-10 13:33:12,220 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2018-04-10 13:33:12,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:12,274 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-04-10 13:33:12,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-10 13:33:12,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-04-10 13:33:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:12,280 INFO L225 Difference]: With dead ends: 50 [2018-04-10 13:33:12,280 INFO L226 Difference]: Without dead ends: 41 [2018-04-10 13:33:12,281 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-10 13:33:12,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-04-10 13:33:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2018-04-10 13:33:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-04-10 13:33:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-04-10 13:33:12,303 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 7 [2018-04-10 13:33:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:12,303 INFO L459 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-04-10 13:33:12,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-10 13:33:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-04-10 13:33:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-04-10 13:33:12,304 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:12,304 INFO L355 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:12,304 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:12,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1166772373, now seen corresponding path program 1 times [2018-04-10 13:33:12,304 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:12,304 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:12,305 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:12,305 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:12,312 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,341 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:12,341 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:12,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:12,360 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,396 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:12,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-04-10 13:33:12,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-10 13:33:12,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-10 13:33:12,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-10 13:33:12,397 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 4 states. [2018-04-10 13:33:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:12,461 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2018-04-10 13:33:12,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-10 13:33:12,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-04-10 13:33:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:12,462 INFO L225 Difference]: With dead ends: 54 [2018-04-10 13:33:12,463 INFO L226 Difference]: Without dead ends: 54 [2018-04-10 13:33:12,463 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-10 13:33:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-04-10 13:33:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-04-10 13:33:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-04-10 13:33:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-04-10 13:33:12,468 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 12 [2018-04-10 13:33:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:12,469 INFO L459 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-04-10 13:33:12,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-10 13:33:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-04-10 13:33:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-04-10 13:33:12,470 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:12,470 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:12,470 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1914964600, now seen corresponding path program 2 times [2018-04-10 13:33:12,471 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:12,471 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:12,472 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:12,472 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:12,478 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,548 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:12,548 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-10 13:33:12,560 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:33:12,566 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:33:12,567 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:12,571 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,606 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:12,606 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-04-10 13:33:12,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-10 13:33:12,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-10 13:33:12,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-10 13:33:12,606 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 5 states. [2018-04-10 13:33:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:12,685 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-04-10 13:33:12,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-10 13:33:12,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-04-10 13:33:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:12,686 INFO L225 Difference]: With dead ends: 67 [2018-04-10 13:33:12,686 INFO L226 Difference]: Without dead ends: 67 [2018-04-10 13:33:12,686 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-10 13:33:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-04-10 13:33:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2018-04-10 13:33:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-04-10 13:33:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2018-04-10 13:33:12,694 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 17 [2018-04-10 13:33:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:12,695 INFO L459 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2018-04-10 13:33:12,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-10 13:33:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2018-04-10 13:33:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-10 13:33:12,695 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:12,695 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:12,696 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:12,696 INFO L82 PathProgramCache]: Analyzing trace with hash -510089099, now seen corresponding path program 3 times [2018-04-10 13:33:12,696 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:12,696 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:12,697 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:12,697 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:12,703 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,737 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:12,737 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-10 13:33:12,742 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:33:12,748 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-04-10 13:33:12,748 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:12,749 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,775 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:12,775 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-04-10 13:33:12,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-10 13:33:12,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-10 13:33:12,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-04-10 13:33:12,776 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 7 states. [2018-04-10 13:33:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:12,878 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2018-04-10 13:33:12,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-10 13:33:12,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-04-10 13:33:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:12,879 INFO L225 Difference]: With dead ends: 80 [2018-04-10 13:33:12,879 INFO L226 Difference]: Without dead ends: 80 [2018-04-10 13:33:12,879 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-04-10 13:33:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-04-10 13:33:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2018-04-10 13:33:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-04-10 13:33:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2018-04-10 13:33:12,883 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 22 [2018-04-10 13:33:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:12,883 INFO L459 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2018-04-10 13:33:12,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-10 13:33:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2018-04-10 13:33:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-04-10 13:33:12,884 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:12,884 INFO L355 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:12,884 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash -697843288, now seen corresponding path program 4 times [2018-04-10 13:33:12,884 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:12,884 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:12,885 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:12,885 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:12,892 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,951 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:12,951 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-10 13:33:12,956 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:33:12,965 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:33:12,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:12,967 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:12,993 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:12,993 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-04-10 13:33:12,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-10 13:33:12,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-10 13:33:12,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-10 13:33:12,993 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2018-04-10 13:33:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:13,152 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2018-04-10 13:33:13,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-10 13:33:13,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-04-10 13:33:13,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:13,153 INFO L225 Difference]: With dead ends: 93 [2018-04-10 13:33:13,153 INFO L226 Difference]: Without dead ends: 93 [2018-04-10 13:33:13,153 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-10 13:33:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-04-10 13:33:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2018-04-10 13:33:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-10 13:33:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2018-04-10 13:33:13,159 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 27 [2018-04-10 13:33:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:13,159 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2018-04-10 13:33:13,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-10 13:33:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2018-04-10 13:33:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-10 13:33:13,160 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:13,160 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:13,161 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:13,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1960349611, now seen corresponding path program 5 times [2018-04-10 13:33:13,161 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:13,161 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:13,162 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:13,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:13,162 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:13,176 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:13,242 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:13,242 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-10 13:33:13,254 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:33:13,267 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-04-10 13:33:13,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:13,269 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:13,334 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:13,334 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-04-10 13:33:13,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-10 13:33:13,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-10 13:33:13,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-04-10 13:33:13,334 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 14 states. [2018-04-10 13:33:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:13,559 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2018-04-10 13:33:13,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-10 13:33:13,559 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-04-10 13:33:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:13,560 INFO L225 Difference]: With dead ends: 106 [2018-04-10 13:33:13,560 INFO L226 Difference]: Without dead ends: 106 [2018-04-10 13:33:13,560 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-04-10 13:33:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-04-10 13:33:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2018-04-10 13:33:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-04-10 13:33:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2018-04-10 13:33:13,566 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 32 [2018-04-10 13:33:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:13,567 INFO L459 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2018-04-10 13:33:13,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-10 13:33:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2018-04-10 13:33:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-04-10 13:33:13,568 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:13,568 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:13,568 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:13,568 INFO L82 PathProgramCache]: Analyzing trace with hash 138077640, now seen corresponding path program 6 times [2018-04-10 13:33:13,568 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:13,569 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:13,569 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:13,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:13,570 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:13,579 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:13,640 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:13,640 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-10 13:33:13,645 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:33:13,656 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-04-10 13:33:13,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:13,657 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:13,701 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:13,701 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-04-10 13:33:13,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-10 13:33:13,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-10 13:33:13,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-04-10 13:33:13,702 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 13 states. [2018-04-10 13:33:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:13,877 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2018-04-10 13:33:13,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-10 13:33:13,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2018-04-10 13:33:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:13,879 INFO L225 Difference]: With dead ends: 119 [2018-04-10 13:33:13,879 INFO L226 Difference]: Without dead ends: 119 [2018-04-10 13:33:13,879 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:33:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-04-10 13:33:13,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 110. [2018-04-10 13:33:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-04-10 13:33:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2018-04-10 13:33:13,886 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 37 [2018-04-10 13:33:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:13,886 INFO L459 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2018-04-10 13:33:13,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-10 13:33:13,886 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2018-04-10 13:33:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-10 13:33:13,887 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:13,887 INFO L355 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:13,888 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash 709222453, now seen corresponding path program 7 times [2018-04-10 13:33:13,888 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:13,888 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:13,889 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:13,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:13,889 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:13,897 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:13,959 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:13,960 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-10 13:33:13,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:13,977 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:14,028 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:14,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2018-04-10 13:33:14,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-10 13:33:14,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-10 13:33:14,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:33:14,030 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 19 states. [2018-04-10 13:33:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:14,375 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2018-04-10 13:33:14,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-10 13:33:14,376 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2018-04-10 13:33:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:14,376 INFO L225 Difference]: With dead ends: 132 [2018-04-10 13:33:14,376 INFO L226 Difference]: Without dead ends: 132 [2018-04-10 13:33:14,376 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:33:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-04-10 13:33:14,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 122. [2018-04-10 13:33:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-10 13:33:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2018-04-10 13:33:14,380 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 42 [2018-04-10 13:33:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:14,380 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2018-04-10 13:33:14,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-10 13:33:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2018-04-10 13:33:14,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-04-10 13:33:14,381 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:14,381 INFO L355 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:14,384 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:14,384 INFO L82 PathProgramCache]: Analyzing trace with hash 336028136, now seen corresponding path program 8 times [2018-04-10 13:33:14,384 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:14,384 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:14,385 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:14,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:14,385 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:14,398 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:14,509 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:14,509 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:14,518 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:33:14,536 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:33:14,536 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:14,538 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:14,575 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:14,575 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-04-10 13:33:14,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-10 13:33:14,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-10 13:33:14,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-04-10 13:33:14,576 INFO L87 Difference]: Start difference. First operand 122 states and 138 transitions. Second operand 11 states. [2018-04-10 13:33:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:15,037 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2018-04-10 13:33:15,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-10 13:33:15,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2018-04-10 13:33:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:15,039 INFO L225 Difference]: With dead ends: 145 [2018-04-10 13:33:15,040 INFO L226 Difference]: Without dead ends: 145 [2018-04-10 13:33:15,041 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-04-10 13:33:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-04-10 13:33:15,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 134. [2018-04-10 13:33:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-04-10 13:33:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2018-04-10 13:33:15,046 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 47 [2018-04-10 13:33:15,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:15,046 INFO L459 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2018-04-10 13:33:15,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-10 13:33:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2018-04-10 13:33:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-04-10 13:33:15,048 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:15,048 INFO L355 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:15,048 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1837234197, now seen corresponding path program 9 times [2018-04-10 13:33:15,048 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:15,049 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:15,049 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:15,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:15,050 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:15,061 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:15,141 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:15,141 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:15,148 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:33:15,186 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-04-10 13:33:15,186 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:15,187 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:15,223 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:15,223 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-04-10 13:33:15,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-10 13:33:15,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-10 13:33:15,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-04-10 13:33:15,224 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand 13 states. [2018-04-10 13:33:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:15,428 INFO L93 Difference]: Finished difference Result 158 states and 179 transitions. [2018-04-10 13:33:15,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-10 13:33:15,428 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2018-04-10 13:33:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:15,429 INFO L225 Difference]: With dead ends: 158 [2018-04-10 13:33:15,429 INFO L226 Difference]: Without dead ends: 158 [2018-04-10 13:33:15,429 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2018-04-10 13:33:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-04-10 13:33:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2018-04-10 13:33:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-04-10 13:33:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2018-04-10 13:33:15,433 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 52 [2018-04-10 13:33:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:15,433 INFO L459 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2018-04-10 13:33:15,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-10 13:33:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2018-04-10 13:33:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-04-10 13:33:15,434 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:15,434 INFO L355 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:15,435 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:15,435 INFO L82 PathProgramCache]: Analyzing trace with hash 872363528, now seen corresponding path program 10 times [2018-04-10 13:33:15,435 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:15,435 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:15,435 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:15,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:15,435 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:15,444 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:15,555 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:15,555 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:15,563 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:33:15,576 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:33:15,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:15,579 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:15,679 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:15,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2018-04-10 13:33:15,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-10 13:33:15,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-10 13:33:15,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2018-04-10 13:33:15,680 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand 25 states. [2018-04-10 13:33:16,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:16,186 INFO L93 Difference]: Finished difference Result 171 states and 194 transitions. [2018-04-10 13:33:16,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-04-10 13:33:16,186 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2018-04-10 13:33:16,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:16,187 INFO L225 Difference]: With dead ends: 171 [2018-04-10 13:33:16,187 INFO L226 Difference]: Without dead ends: 171 [2018-04-10 13:33:16,187 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2018-04-10 13:33:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-04-10 13:33:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2018-04-10 13:33:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-04-10 13:33:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 180 transitions. [2018-04-10 13:33:16,190 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 180 transitions. Word has length 57 [2018-04-10 13:33:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:16,191 INFO L459 AbstractCegarLoop]: Abstraction has 158 states and 180 transitions. [2018-04-10 13:33:16,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-10 13:33:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 180 transitions. [2018-04-10 13:33:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-04-10 13:33:16,192 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:16,193 INFO L355 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:16,193 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:16,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1444300811, now seen corresponding path program 11 times [2018-04-10 13:33:16,193 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:16,193 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:16,194 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:16,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:16,194 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:16,202 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:16,278 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:16,278 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:16,284 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:33:16,302 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-04-10 13:33:16,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:16,304 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:16,424 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:16,424 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-04-10 13:33:16,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-04-10 13:33:16,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-04-10 13:33:16,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-04-10 13:33:16,425 INFO L87 Difference]: Start difference. First operand 158 states and 180 transitions. Second operand 26 states. [2018-04-10 13:33:16,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:16,926 INFO L93 Difference]: Finished difference Result 184 states and 209 transitions. [2018-04-10 13:33:16,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-10 13:33:16,926 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-04-10 13:33:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:16,927 INFO L225 Difference]: With dead ends: 184 [2018-04-10 13:33:16,927 INFO L226 Difference]: Without dead ends: 184 [2018-04-10 13:33:16,928 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-04-10 13:33:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-04-10 13:33:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 170. [2018-04-10 13:33:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-04-10 13:33:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2018-04-10 13:33:16,932 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 62 [2018-04-10 13:33:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:16,932 INFO L459 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2018-04-10 13:33:16,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-04-10 13:33:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2018-04-10 13:33:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-04-10 13:33:16,933 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:16,933 INFO L355 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:16,933 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:16,934 INFO L82 PathProgramCache]: Analyzing trace with hash 198468136, now seen corresponding path program 12 times [2018-04-10 13:33:16,934 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:16,934 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:16,934 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:16,934 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:16,934 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:16,941 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:17,050 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:17,050 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:17,056 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:33:17,071 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-04-10 13:33:17,071 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:17,073 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:17,130 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:17,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 19 [2018-04-10 13:33:17,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-10 13:33:17,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-10 13:33:17,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-04-10 13:33:17,131 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand 20 states. [2018-04-10 13:33:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:17,414 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2018-04-10 13:33:17,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-10 13:33:17,414 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2018-04-10 13:33:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:17,415 INFO L225 Difference]: With dead ends: 197 [2018-04-10 13:33:17,415 INFO L226 Difference]: Without dead ends: 197 [2018-04-10 13:33:17,415 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=302, Invalid=690, Unknown=0, NotChecked=0, Total=992 [2018-04-10 13:33:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-04-10 13:33:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 182. [2018-04-10 13:33:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-04-10 13:33:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2018-04-10 13:33:17,419 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 67 [2018-04-10 13:33:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:17,420 INFO L459 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2018-04-10 13:33:17,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-10 13:33:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2018-04-10 13:33:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-04-10 13:33:17,421 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:17,421 INFO L355 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:17,421 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:17,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1156898859, now seen corresponding path program 13 times [2018-04-10 13:33:17,421 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:17,421 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:17,422 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:17,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:17,422 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:17,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:17,553 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:17,553 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:17,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:17,573 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:17,740 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:17,740 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2018-04-10 13:33:17,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-04-10 13:33:17,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-04-10 13:33:17,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-04-10 13:33:17,741 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand 31 states. [2018-04-10 13:33:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:18,508 INFO L93 Difference]: Finished difference Result 210 states and 239 transitions. [2018-04-10 13:33:18,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-10 13:33:18,508 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-04-10 13:33:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:18,509 INFO L225 Difference]: With dead ends: 210 [2018-04-10 13:33:18,509 INFO L226 Difference]: Without dead ends: 210 [2018-04-10 13:33:18,509 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-04-10 13:33:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-04-10 13:33:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 194. [2018-04-10 13:33:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-04-10 13:33:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 222 transitions. [2018-04-10 13:33:18,513 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 222 transitions. Word has length 72 [2018-04-10 13:33:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:18,514 INFO L459 AbstractCegarLoop]: Abstraction has 194 states and 222 transitions. [2018-04-10 13:33:18,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-04-10 13:33:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 222 transitions. [2018-04-10 13:33:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-04-10 13:33:18,515 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:18,515 INFO L355 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:18,515 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:18,515 INFO L82 PathProgramCache]: Analyzing trace with hash -927406520, now seen corresponding path program 14 times [2018-04-10 13:33:18,515 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:18,515 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:18,516 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:18,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:18,516 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:18,522 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:18,643 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:18,643 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:18,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:33:18,657 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:33:18,657 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:18,659 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:18,774 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:18,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2018-04-10 13:33:18,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-04-10 13:33:18,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-04-10 13:33:18,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2018-04-10 13:33:18,775 INFO L87 Difference]: Start difference. First operand 194 states and 222 transitions. Second operand 33 states. [2018-04-10 13:33:19,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:19,611 INFO L93 Difference]: Finished difference Result 223 states and 254 transitions. [2018-04-10 13:33:19,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-10 13:33:19,612 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 77 [2018-04-10 13:33:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:19,612 INFO L225 Difference]: With dead ends: 223 [2018-04-10 13:33:19,612 INFO L226 Difference]: Without dead ends: 223 [2018-04-10 13:33:19,613 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2018-04-10 13:33:19,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-04-10 13:33:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2018-04-10 13:33:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-04-10 13:33:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2018-04-10 13:33:19,617 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 77 [2018-04-10 13:33:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:19,618 INFO L459 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2018-04-10 13:33:19,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-04-10 13:33:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2018-04-10 13:33:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-04-10 13:33:19,619 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:19,619 INFO L355 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:19,619 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:19,619 INFO L82 PathProgramCache]: Analyzing trace with hash -487313483, now seen corresponding path program 15 times [2018-04-10 13:33:19,619 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:19,619 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:19,620 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:19,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:19,620 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:19,628 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:19,749 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:19,749 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:19,755 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:33:19,777 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-04-10 13:33:19,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:19,778 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:19,809 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:19,809 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-04-10 13:33:19,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-10 13:33:19,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-10 13:33:19,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:33:19,810 INFO L87 Difference]: Start difference. First operand 206 states and 236 transitions. Second operand 19 states. [2018-04-10 13:33:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:20,129 INFO L93 Difference]: Finished difference Result 236 states and 269 transitions. [2018-04-10 13:33:20,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-10 13:33:20,130 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 82 [2018-04-10 13:33:20,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:20,130 INFO L225 Difference]: With dead ends: 236 [2018-04-10 13:33:20,130 INFO L226 Difference]: Without dead ends: 236 [2018-04-10 13:33:20,131 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=411, Invalid=711, Unknown=0, NotChecked=0, Total=1122 [2018-04-10 13:33:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-04-10 13:33:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 218. [2018-04-10 13:33:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-04-10 13:33:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 250 transitions. [2018-04-10 13:33:20,134 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 250 transitions. Word has length 82 [2018-04-10 13:33:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:20,134 INFO L459 AbstractCegarLoop]: Abstraction has 218 states and 250 transitions. [2018-04-10 13:33:20,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-10 13:33:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 250 transitions. [2018-04-10 13:33:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-04-10 13:33:20,135 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:20,135 INFO L355 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:20,135 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:20,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1096729192, now seen corresponding path program 16 times [2018-04-10 13:33:20,135 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:20,135 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:20,136 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:20,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:20,136 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:20,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:20,319 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:20,319 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:20,324 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:33:20,334 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:33:20,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:20,336 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:20,384 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:20,385 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-04-10 13:33:20,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-10 13:33:20,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-10 13:33:20,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:33:20,385 INFO L87 Difference]: Start difference. First operand 218 states and 250 transitions. Second operand 19 states. [2018-04-10 13:33:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:21,379 INFO L93 Difference]: Finished difference Result 249 states and 284 transitions. [2018-04-10 13:33:21,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-10 13:33:21,380 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 87 [2018-04-10 13:33:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:21,381 INFO L225 Difference]: With dead ends: 249 [2018-04-10 13:33:21,381 INFO L226 Difference]: Without dead ends: 249 [2018-04-10 13:33:21,381 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:33:21,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-04-10 13:33:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 230. [2018-04-10 13:33:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-04-10 13:33:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 264 transitions. [2018-04-10 13:33:21,384 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 264 transitions. Word has length 87 [2018-04-10 13:33:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:21,384 INFO L459 AbstractCegarLoop]: Abstraction has 230 states and 264 transitions. [2018-04-10 13:33:21,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-10 13:33:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 264 transitions. [2018-04-10 13:33:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-04-10 13:33:21,385 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:21,385 INFO L355 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:21,385 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:21,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1439504491, now seen corresponding path program 17 times [2018-04-10 13:33:21,386 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:21,386 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:21,386 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:21,386 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:21,386 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:21,392 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:21,525 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:21,525 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:21,531 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:33:21,574 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-04-10 13:33:21,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:21,576 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:21,725 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:21,725 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2018-04-10 13:33:21,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-04-10 13:33:21,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-04-10 13:33:21,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-04-10 13:33:21,726 INFO L87 Difference]: Start difference. First operand 230 states and 264 transitions. Second operand 38 states. [2018-04-10 13:33:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:22,552 INFO L93 Difference]: Finished difference Result 262 states and 299 transitions. [2018-04-10 13:33:22,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-10 13:33:22,553 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 92 [2018-04-10 13:33:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:22,554 INFO L225 Difference]: With dead ends: 262 [2018-04-10 13:33:22,554 INFO L226 Difference]: Without dead ends: 262 [2018-04-10 13:33:22,554 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-04-10 13:33:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-04-10 13:33:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 242. [2018-04-10 13:33:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-04-10 13:33:22,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 278 transitions. [2018-04-10 13:33:22,559 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 278 transitions. Word has length 92 [2018-04-10 13:33:22,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:22,560 INFO L459 AbstractCegarLoop]: Abstraction has 242 states and 278 transitions. [2018-04-10 13:33:22,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-04-10 13:33:22,560 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 278 transitions. [2018-04-10 13:33:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-04-10 13:33:22,561 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:22,561 INFO L355 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:22,561 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:22,561 INFO L82 PathProgramCache]: Analyzing trace with hash 368572040, now seen corresponding path program 18 times [2018-04-10 13:33:22,561 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:22,561 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:22,562 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:22,562 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:22,562 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:22,571 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:22,753 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:22,753 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:22,759 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:33:22,785 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-04-10 13:33:22,785 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:22,786 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:22,840 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:22,840 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 24 [2018-04-10 13:33:22,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-10 13:33:22,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-10 13:33:22,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2018-04-10 13:33:22,841 INFO L87 Difference]: Start difference. First operand 242 states and 278 transitions. Second operand 25 states. [2018-04-10 13:33:23,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:23,410 INFO L93 Difference]: Finished difference Result 275 states and 314 transitions. [2018-04-10 13:33:23,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-10 13:33:23,411 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2018-04-10 13:33:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:23,412 INFO L225 Difference]: With dead ends: 275 [2018-04-10 13:33:23,412 INFO L226 Difference]: Without dead ends: 275 [2018-04-10 13:33:23,413 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=620, Invalid=1186, Unknown=0, NotChecked=0, Total=1806 [2018-04-10 13:33:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-04-10 13:33:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2018-04-10 13:33:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-04-10 13:33:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 292 transitions. [2018-04-10 13:33:23,418 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 292 transitions. Word has length 97 [2018-04-10 13:33:23,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:23,419 INFO L459 AbstractCegarLoop]: Abstraction has 254 states and 292 transitions. [2018-04-10 13:33:23,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-10 13:33:23,419 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 292 transitions. [2018-04-10 13:33:23,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-04-10 13:33:23,420 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:23,420 INFO L355 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:23,420 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:23,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1076541579, now seen corresponding path program 19 times [2018-04-10 13:33:23,420 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:23,420 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:23,421 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:23,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:23,421 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:23,430 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:23,639 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:23,639 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:23,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:23,666 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:23,883 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:23,884 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 42 [2018-04-10 13:33:23,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-04-10 13:33:23,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-04-10 13:33:23,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-04-10 13:33:23,885 INFO L87 Difference]: Start difference. First operand 254 states and 292 transitions. Second operand 43 states. [2018-04-10 13:33:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:25,295 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2018-04-10 13:33:25,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-10 13:33:25,295 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 102 [2018-04-10 13:33:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:25,296 INFO L225 Difference]: With dead ends: 288 [2018-04-10 13:33:25,297 INFO L226 Difference]: Without dead ends: 288 [2018-04-10 13:33:25,297 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-04-10 13:33:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-04-10 13:33:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 266. [2018-04-10 13:33:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-04-10 13:33:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 306 transitions. [2018-04-10 13:33:25,304 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 306 transitions. Word has length 102 [2018-04-10 13:33:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:25,304 INFO L459 AbstractCegarLoop]: Abstraction has 266 states and 306 transitions. [2018-04-10 13:33:25,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-04-10 13:33:25,304 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 306 transitions. [2018-04-10 13:33:25,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-04-10 13:33:25,305 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:25,305 INFO L355 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:25,305 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:25,305 INFO L82 PathProgramCache]: Analyzing trace with hash -801733976, now seen corresponding path program 20 times [2018-04-10 13:33:25,305 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:25,306 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:25,306 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:25,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:25,306 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:25,325 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:25,511 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:25,511 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:25,516 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:33:25,529 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:33:25,529 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:25,530 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:25,791 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:25,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2018-04-10 13:33:25,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-10 13:33:25,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-10 13:33:25,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1518, Unknown=0, NotChecked=0, Total=1980 [2018-04-10 13:33:25,792 INFO L87 Difference]: Start difference. First operand 266 states and 306 transitions. Second operand 45 states. [2018-04-10 13:33:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:27,368 INFO L93 Difference]: Finished difference Result 301 states and 344 transitions. [2018-04-10 13:33:27,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-04-10 13:33:27,368 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 107 [2018-04-10 13:33:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:27,369 INFO L225 Difference]: With dead ends: 301 [2018-04-10 13:33:27,369 INFO L226 Difference]: Without dead ends: 301 [2018-04-10 13:33:27,369 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=462, Invalid=1518, Unknown=0, NotChecked=0, Total=1980 [2018-04-10 13:33:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-04-10 13:33:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 278. [2018-04-10 13:33:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-04-10 13:33:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 320 transitions. [2018-04-10 13:33:27,373 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 320 transitions. Word has length 107 [2018-04-10 13:33:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:27,373 INFO L459 AbstractCegarLoop]: Abstraction has 278 states and 320 transitions. [2018-04-10 13:33:27,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-10 13:33:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 320 transitions. [2018-04-10 13:33:27,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-04-10 13:33:27,374 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:27,374 INFO L355 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:27,374 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:27,374 INFO L82 PathProgramCache]: Analyzing trace with hash -647409835, now seen corresponding path program 21 times [2018-04-10 13:33:27,374 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:27,374 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:27,375 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:27,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:27,375 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:27,381 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:27,581 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:27,581 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:27,586 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:33:27,643 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-04-10 13:33:27,643 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:27,646 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:27,682 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:27,682 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-04-10 13:33:27,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-10 13:33:27,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-10 13:33:27,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=342, Unknown=0, NotChecked=0, Total=600 [2018-04-10 13:33:27,683 INFO L87 Difference]: Start difference. First operand 278 states and 320 transitions. Second operand 25 states. [2018-04-10 13:33:28,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:28,194 INFO L93 Difference]: Finished difference Result 314 states and 359 transitions. [2018-04-10 13:33:28,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-10 13:33:28,195 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 112 [2018-04-10 13:33:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:28,196 INFO L225 Difference]: With dead ends: 314 [2018-04-10 13:33:28,196 INFO L226 Difference]: Without dead ends: 314 [2018-04-10 13:33:28,197 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=762, Invalid=1308, Unknown=0, NotChecked=0, Total=2070 [2018-04-10 13:33:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-04-10 13:33:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 290. [2018-04-10 13:33:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-04-10 13:33:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 334 transitions. [2018-04-10 13:33:28,202 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 334 transitions. Word has length 112 [2018-04-10 13:33:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:28,202 INFO L459 AbstractCegarLoop]: Abstraction has 290 states and 334 transitions. [2018-04-10 13:33:28,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-10 13:33:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 334 transitions. [2018-04-10 13:33:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-04-10 13:33:28,203 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:28,203 INFO L355 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:28,203 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:28,203 INFO L82 PathProgramCache]: Analyzing trace with hash 55338696, now seen corresponding path program 22 times [2018-04-10 13:33:28,203 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:28,203 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:28,204 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:28,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:28,204 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:28,211 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:28,439 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:28,439 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:28,447 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:33:28,470 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:33:28,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:28,472 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:28,702 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:28,703 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2018-04-10 13:33:28,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-04-10 13:33:28,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-04-10 13:33:28,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1752, Unknown=0, NotChecked=0, Total=2352 [2018-04-10 13:33:28,704 INFO L87 Difference]: Start difference. First operand 290 states and 334 transitions. Second operand 49 states. [2018-04-10 13:33:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:29,772 INFO L93 Difference]: Finished difference Result 327 states and 374 transitions. [2018-04-10 13:33:29,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-04-10 13:33:29,772 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 117 [2018-04-10 13:33:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:29,773 INFO L225 Difference]: With dead ends: 327 [2018-04-10 13:33:29,773 INFO L226 Difference]: Without dead ends: 327 [2018-04-10 13:33:29,774 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=600, Invalid=1752, Unknown=0, NotChecked=0, Total=2352 [2018-04-10 13:33:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-04-10 13:33:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 302. [2018-04-10 13:33:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-04-10 13:33:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 348 transitions. [2018-04-10 13:33:29,779 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 348 transitions. Word has length 117 [2018-04-10 13:33:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:29,779 INFO L459 AbstractCegarLoop]: Abstraction has 302 states and 348 transitions. [2018-04-10 13:33:29,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-04-10 13:33:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 348 transitions. [2018-04-10 13:33:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-04-10 13:33:29,780 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:29,780 INFO L355 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:29,780 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:29,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1828913355, now seen corresponding path program 23 times [2018-04-10 13:33:29,781 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:29,781 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:29,781 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:29,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:29,782 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:29,791 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:30,037 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:30,037 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:30,042 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:33:30,113 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-04-10 13:33:30,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:30,116 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:30,362 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:30,362 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2018-04-10 13:33:30,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-10 13:33:30,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-10 13:33:30,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-04-10 13:33:30,363 INFO L87 Difference]: Start difference. First operand 302 states and 348 transitions. Second operand 50 states. [2018-04-10 13:33:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:31,910 INFO L93 Difference]: Finished difference Result 340 states and 389 transitions. [2018-04-10 13:33:31,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-10 13:33:31,910 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 122 [2018-04-10 13:33:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:31,911 INFO L225 Difference]: With dead ends: 340 [2018-04-10 13:33:31,911 INFO L226 Difference]: Without dead ends: 340 [2018-04-10 13:33:31,911 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-04-10 13:33:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-04-10 13:33:31,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 314. [2018-04-10 13:33:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-04-10 13:33:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 362 transitions. [2018-04-10 13:33:31,914 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 362 transitions. Word has length 122 [2018-04-10 13:33:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:31,914 INFO L459 AbstractCegarLoop]: Abstraction has 314 states and 362 transitions. [2018-04-10 13:33:31,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-10 13:33:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 362 transitions. [2018-04-10 13:33:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-04-10 13:33:31,915 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:31,915 INFO L355 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:31,915 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:31,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1810604776, now seen corresponding path program 24 times [2018-04-10 13:33:31,915 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:31,915 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:31,916 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:31,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:31,916 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:31,930 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:32,169 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:32,169 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:32,175 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:33:32,232 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-04-10 13:33:32,232 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:32,234 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:32,375 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:32,375 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 36 [2018-04-10 13:33:32,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-04-10 13:33:32,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-04-10 13:33:32,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=932, Unknown=0, NotChecked=0, Total=1332 [2018-04-10 13:33:32,376 INFO L87 Difference]: Start difference. First operand 314 states and 362 transitions. Second operand 37 states. [2018-04-10 13:33:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:33,302 INFO L93 Difference]: Finished difference Result 353 states and 404 transitions. [2018-04-10 13:33:33,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-10 13:33:33,303 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 127 [2018-04-10 13:33:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:33,304 INFO L225 Difference]: With dead ends: 353 [2018-04-10 13:33:33,304 INFO L226 Difference]: Without dead ends: 353 [2018-04-10 13:33:33,304 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1067, Invalid=2593, Unknown=0, NotChecked=0, Total=3660 [2018-04-10 13:33:33,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-04-10 13:33:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 326. [2018-04-10 13:33:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-04-10 13:33:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 376 transitions. [2018-04-10 13:33:33,308 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 376 transitions. Word has length 127 [2018-04-10 13:33:33,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:33,309 INFO L459 AbstractCegarLoop]: Abstraction has 326 states and 376 transitions. [2018-04-10 13:33:33,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-04-10 13:33:33,309 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 376 transitions. [2018-04-10 13:33:33,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-04-10 13:33:33,310 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:33,310 INFO L355 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:33,310 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:33,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1327388437, now seen corresponding path program 25 times [2018-04-10 13:33:33,310 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:33,310 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:33,311 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:33,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:33,311 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:33,321 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:33,601 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:33,601 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:33,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:33,626 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:33,910 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:33,910 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 54 [2018-04-10 13:33:33,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-04-10 13:33:33,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-04-10 13:33:33,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-04-10 13:33:33,911 INFO L87 Difference]: Start difference. First operand 326 states and 376 transitions. Second operand 55 states. [2018-04-10 13:33:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:35,879 INFO L93 Difference]: Finished difference Result 366 states and 419 transitions. [2018-04-10 13:33:35,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-04-10 13:33:35,880 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 132 [2018-04-10 13:33:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:35,881 INFO L225 Difference]: With dead ends: 366 [2018-04-10 13:33:35,881 INFO L226 Difference]: Without dead ends: 366 [2018-04-10 13:33:35,881 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-04-10 13:33:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-04-10 13:33:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 338. [2018-04-10 13:33:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-04-10 13:33:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 390 transitions. [2018-04-10 13:33:35,888 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 390 transitions. Word has length 132 [2018-04-10 13:33:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:35,888 INFO L459 AbstractCegarLoop]: Abstraction has 338 states and 390 transitions. [2018-04-10 13:33:35,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-04-10 13:33:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 390 transitions. [2018-04-10 13:33:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-04-10 13:33:35,889 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:35,889 INFO L355 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:35,889 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:35,890 INFO L82 PathProgramCache]: Analyzing trace with hash 273037064, now seen corresponding path program 26 times [2018-04-10 13:33:35,890 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:35,890 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:35,890 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:35,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:35,890 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:35,900 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:36,191 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:36,191 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:36,201 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:33:36,221 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:33:36,221 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:36,223 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:36,473 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:36,473 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 56 [2018-04-10 13:33:36,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-04-10 13:33:36,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-04-10 13:33:36,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=2380, Unknown=0, NotChecked=0, Total=3192 [2018-04-10 13:33:36,475 INFO L87 Difference]: Start difference. First operand 338 states and 390 transitions. Second operand 57 states. [2018-04-10 13:33:38,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:38,496 INFO L93 Difference]: Finished difference Result 379 states and 434 transitions. [2018-04-10 13:33:38,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-04-10 13:33:38,496 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 137 [2018-04-10 13:33:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:38,497 INFO L225 Difference]: With dead ends: 379 [2018-04-10 13:33:38,497 INFO L226 Difference]: Without dead ends: 379 [2018-04-10 13:33:38,498 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=812, Invalid=2380, Unknown=0, NotChecked=0, Total=3192 [2018-04-10 13:33:38,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-04-10 13:33:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 350. [2018-04-10 13:33:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-04-10 13:33:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 404 transitions. [2018-04-10 13:33:38,501 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 404 transitions. Word has length 137 [2018-04-10 13:33:38,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:38,501 INFO L459 AbstractCegarLoop]: Abstraction has 350 states and 404 transitions. [2018-04-10 13:33:38,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-04-10 13:33:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 404 transitions. [2018-04-10 13:33:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-04-10 13:33:38,502 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:38,502 INFO L355 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:38,502 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:38,502 INFO L82 PathProgramCache]: Analyzing trace with hash 383473397, now seen corresponding path program 27 times [2018-04-10 13:33:38,502 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:38,502 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:38,502 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:38,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:38,503 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:38,511 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:38,868 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:38,868 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:38,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:33:38,992 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-04-10 13:33:38,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:38,995 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:39,040 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:39,040 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-04-10 13:33:39,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-04-10 13:33:39,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-04-10 13:33:39,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=519, Unknown=0, NotChecked=0, Total=930 [2018-04-10 13:33:39,041 INFO L87 Difference]: Start difference. First operand 350 states and 404 transitions. Second operand 31 states. [2018-04-10 13:33:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:39,706 INFO L93 Difference]: Finished difference Result 392 states and 449 transitions. [2018-04-10 13:33:39,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-04-10 13:33:39,706 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 142 [2018-04-10 13:33:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:39,707 INFO L225 Difference]: With dead ends: 392 [2018-04-10 13:33:39,707 INFO L226 Difference]: Without dead ends: 392 [2018-04-10 13:33:39,708 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1221, Invalid=2085, Unknown=0, NotChecked=0, Total=3306 [2018-04-10 13:33:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-04-10 13:33:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 362. [2018-04-10 13:33:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2018-04-10 13:33:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 418 transitions. [2018-04-10 13:33:39,712 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 418 transitions. Word has length 142 [2018-04-10 13:33:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:39,713 INFO L459 AbstractCegarLoop]: Abstraction has 362 states and 418 transitions. [2018-04-10 13:33:39,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-04-10 13:33:39,713 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 418 transitions. [2018-04-10 13:33:39,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-04-10 13:33:39,714 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:39,714 INFO L355 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:39,714 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:39,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1611539240, now seen corresponding path program 28 times [2018-04-10 13:33:39,714 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:39,714 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:39,715 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:39,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:39,715 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:39,725 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:40,067 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:40,067 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:40,073 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:33:40,091 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:33:40,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:40,093 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:40,415 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:40,415 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 60 [2018-04-10 13:33:40,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-04-10 13:33:40,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-04-10 13:33:40,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=2790, Unknown=0, NotChecked=0, Total=3660 [2018-04-10 13:33:40,417 INFO L87 Difference]: Start difference. First operand 362 states and 418 transitions. Second operand 61 states. [2018-04-10 13:33:43,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:43,123 INFO L93 Difference]: Finished difference Result 405 states and 464 transitions. [2018-04-10 13:33:43,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-10 13:33:43,124 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 147 [2018-04-10 13:33:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:43,124 INFO L225 Difference]: With dead ends: 405 [2018-04-10 13:33:43,125 INFO L226 Difference]: Without dead ends: 405 [2018-04-10 13:33:43,125 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=870, Invalid=2790, Unknown=0, NotChecked=0, Total=3660 [2018-04-10 13:33:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-04-10 13:33:43,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 374. [2018-04-10 13:33:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-04-10 13:33:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 432 transitions. [2018-04-10 13:33:43,128 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 432 transitions. Word has length 147 [2018-04-10 13:33:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:43,129 INFO L459 AbstractCegarLoop]: Abstraction has 374 states and 432 transitions. [2018-04-10 13:33:43,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-04-10 13:33:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 432 transitions. [2018-04-10 13:33:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-04-10 13:33:43,129 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:43,129 INFO L355 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:43,129 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2042756821, now seen corresponding path program 29 times [2018-04-10 13:33:43,129 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:43,130 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:43,130 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:43,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:43,130 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:43,137 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:43,471 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:43,471 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:43,477 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:33:43,604 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-04-10 13:33:43,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:43,607 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:43,957 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:43,957 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 61 [2018-04-10 13:33:43,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-04-10 13:33:43,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-04-10 13:33:43,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-04-10 13:33:43,958 INFO L87 Difference]: Start difference. First operand 374 states and 432 transitions. Second operand 62 states. [2018-04-10 13:33:47,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:47,218 INFO L93 Difference]: Finished difference Result 418 states and 479 transitions. [2018-04-10 13:33:47,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-10 13:33:47,218 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 152 [2018-04-10 13:33:47,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:47,219 INFO L225 Difference]: With dead ends: 418 [2018-04-10 13:33:47,219 INFO L226 Difference]: Without dead ends: 418 [2018-04-10 13:33:47,220 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2018-04-10 13:33:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-04-10 13:33:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 386. [2018-04-10 13:33:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-04-10 13:33:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 446 transitions. [2018-04-10 13:33:47,224 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 446 transitions. Word has length 152 [2018-04-10 13:33:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:47,224 INFO L459 AbstractCegarLoop]: Abstraction has 386 states and 446 transitions. [2018-04-10 13:33:47,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-04-10 13:33:47,224 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 446 transitions. [2018-04-10 13:33:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-04-10 13:33:47,225 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:47,225 INFO L355 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:47,225 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:47,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1416980296, now seen corresponding path program 30 times [2018-04-10 13:33:47,225 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:47,225 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:47,226 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:47,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:47,226 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:47,232 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:47,607 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:47,607 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:47,612 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:33:47,706 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-04-10 13:33:47,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:47,708 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:47,799 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:47,799 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 36 [2018-04-10 13:33:47,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-04-10 13:33:47,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-04-10 13:33:47,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=818, Unknown=0, NotChecked=0, Total=1332 [2018-04-10 13:33:47,800 INFO L87 Difference]: Start difference. First operand 386 states and 446 transitions. Second operand 37 states. [2018-04-10 13:33:48,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:48,701 INFO L93 Difference]: Finished difference Result 431 states and 494 transitions. [2018-04-10 13:33:48,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-04-10 13:33:48,701 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 157 [2018-04-10 13:33:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:48,703 INFO L225 Difference]: With dead ends: 431 [2018-04-10 13:33:48,703 INFO L226 Difference]: Without dead ends: 431 [2018-04-10 13:33:48,704 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1562, Invalid=2860, Unknown=0, NotChecked=0, Total=4422 [2018-04-10 13:33:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-04-10 13:33:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 398. [2018-04-10 13:33:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-04-10 13:33:48,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 460 transitions. [2018-04-10 13:33:48,710 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 460 transitions. Word has length 157 [2018-04-10 13:33:48,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:48,710 INFO L459 AbstractCegarLoop]: Abstraction has 398 states and 460 transitions. [2018-04-10 13:33:48,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-04-10 13:33:48,710 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 460 transitions. [2018-04-10 13:33:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-04-10 13:33:48,711 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:48,711 INFO L355 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:48,712 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1843416757, now seen corresponding path program 31 times [2018-04-10 13:33:48,712 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:48,712 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:48,712 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:48,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:48,713 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:48,723 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:49,194 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:49,195 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:49,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:49,227 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:49,557 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:49,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 66 [2018-04-10 13:33:49,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-04-10 13:33:49,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-04-10 13:33:49,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-04-10 13:33:49,559 INFO L87 Difference]: Start difference. First operand 398 states and 460 transitions. Second operand 67 states. [2018-04-10 13:33:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:53,057 INFO L93 Difference]: Finished difference Result 444 states and 509 transitions. [2018-04-10 13:33:53,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-04-10 13:33:53,057 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 162 [2018-04-10 13:33:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:53,059 INFO L225 Difference]: With dead ends: 444 [2018-04-10 13:33:53,059 INFO L226 Difference]: Without dead ends: 444 [2018-04-10 13:33:53,059 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-04-10 13:33:53,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2018-04-10 13:33:53,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 410. [2018-04-10 13:33:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2018-04-10 13:33:53,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 474 transitions. [2018-04-10 13:33:53,062 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 474 transitions. Word has length 162 [2018-04-10 13:33:53,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:53,063 INFO L459 AbstractCegarLoop]: Abstraction has 410 states and 474 transitions. [2018-04-10 13:33:53,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-04-10 13:33:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 474 transitions. [2018-04-10 13:33:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-04-10 13:33:53,063 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:53,064 INFO L355 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:53,064 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:53,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1876032664, now seen corresponding path program 32 times [2018-04-10 13:33:53,064 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:53,064 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:53,065 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:53,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:33:53,065 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:53,070 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:53,636 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:53,636 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:53,641 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:33:53,662 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:33:53,663 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:53,665 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:53,742 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:53,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-04-10 13:33:53,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-10 13:33:53,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-10 13:33:53,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-04-10 13:33:53,743 INFO L87 Difference]: Start difference. First operand 410 states and 474 transitions. Second operand 35 states. [2018-04-10 13:33:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:57,243 INFO L93 Difference]: Finished difference Result 457 states and 524 transitions. [2018-04-10 13:33:57,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-04-10 13:33:57,244 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 167 [2018-04-10 13:33:57,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:57,245 INFO L225 Difference]: With dead ends: 457 [2018-04-10 13:33:57,245 INFO L226 Difference]: Without dead ends: 457 [2018-04-10 13:33:57,246 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-04-10 13:33:57,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-04-10 13:33:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 422. [2018-04-10 13:33:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2018-04-10 13:33:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 488 transitions. [2018-04-10 13:33:57,249 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 488 transitions. Word has length 167 [2018-04-10 13:33:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:57,249 INFO L459 AbstractCegarLoop]: Abstraction has 422 states and 488 transitions. [2018-04-10 13:33:57,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-10 13:33:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 488 transitions. [2018-04-10 13:33:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-04-10 13:33:57,250 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:57,250 INFO L355 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:57,250 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:57,250 INFO L82 PathProgramCache]: Analyzing trace with hash 801392277, now seen corresponding path program 33 times [2018-04-10 13:33:57,250 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:57,250 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:57,250 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:57,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:57,251 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:57,258 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:57,663 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:57,663 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:57,668 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:33:57,839 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-04-10 13:33:57,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:57,842 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:57,887 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:57,887 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-04-10 13:33:57,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-04-10 13:33:57,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-04-10 13:33:57,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=732, Unknown=0, NotChecked=0, Total=1332 [2018-04-10 13:33:57,888 INFO L87 Difference]: Start difference. First operand 422 states and 488 transitions. Second operand 37 states. [2018-04-10 13:33:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:33:58,841 INFO L93 Difference]: Finished difference Result 470 states and 539 transitions. [2018-04-10 13:33:58,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-10 13:33:58,841 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 172 [2018-04-10 13:33:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:33:58,842 INFO L225 Difference]: With dead ends: 470 [2018-04-10 13:33:58,843 INFO L226 Difference]: Without dead ends: 470 [2018-04-10 13:33:58,843 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1788, Invalid=3042, Unknown=0, NotChecked=0, Total=4830 [2018-04-10 13:33:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2018-04-10 13:33:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 434. [2018-04-10 13:33:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-04-10 13:33:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 502 transitions. [2018-04-10 13:33:58,846 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 502 transitions. Word has length 172 [2018-04-10 13:33:58,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:33:58,846 INFO L459 AbstractCegarLoop]: Abstraction has 434 states and 502 transitions. [2018-04-10 13:33:58,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-04-10 13:33:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 502 transitions. [2018-04-10 13:33:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-04-10 13:33:58,847 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:33:58,847 INFO L355 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-04-10 13:33:58,847 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:33:58,847 INFO L82 PathProgramCache]: Analyzing trace with hash 2137651080, now seen corresponding path program 34 times [2018-04-10 13:33:58,847 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:33:58,847 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:33:58,848 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:58,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:33:58,848 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:33:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:33:58,854 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:33:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:59,250 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:33:59,250 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:33:59,255 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:33:59,273 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:33:59,273 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:33:59,275 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:33:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:33:59,667 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:33:59,667 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 72 [2018-04-10 13:33:59,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-04-10 13:33:59,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-04-10 13:33:59,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=3924, Unknown=0, NotChecked=0, Total=5256 [2018-04-10 13:33:59,668 INFO L87 Difference]: Start difference. First operand 434 states and 502 transitions. Second operand 73 states. [2018-04-10 13:34:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:04,034 INFO L93 Difference]: Finished difference Result 483 states and 554 transitions. [2018-04-10 13:34:04,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-04-10 13:34:04,034 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 177 [2018-04-10 13:34:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:04,035 INFO L225 Difference]: With dead ends: 483 [2018-04-10 13:34:04,035 INFO L226 Difference]: Without dead ends: 483 [2018-04-10 13:34:04,036 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2343 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1332, Invalid=3924, Unknown=0, NotChecked=0, Total=5256 [2018-04-10 13:34:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-04-10 13:34:04,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 446. [2018-04-10 13:34:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-04-10 13:34:04,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 516 transitions. [2018-04-10 13:34:04,040 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 516 transitions. Word has length 177 [2018-04-10 13:34:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:04,041 INFO L459 AbstractCegarLoop]: Abstraction has 446 states and 516 transitions. [2018-04-10 13:34:04,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-04-10 13:34:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 516 transitions. [2018-04-10 13:34:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-04-10 13:34:04,042 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:04,042 INFO L355 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:04,042 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:04,043 INFO L82 PathProgramCache]: Analyzing trace with hash 578545269, now seen corresponding path program 35 times [2018-04-10 13:34:04,043 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:04,043 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:04,043 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:04,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:04,044 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:04,053 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:04,478 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:04,478 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:04,482 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:34:04,692 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-04-10 13:34:04,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:04,695 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:05,430 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:05,430 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 73 [2018-04-10 13:34:05,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-04-10 13:34:05,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-04-10 13:34:05,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-04-10 13:34:05,431 INFO L87 Difference]: Start difference. First operand 446 states and 516 transitions. Second operand 74 states. [2018-04-10 13:34:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:10,233 INFO L93 Difference]: Finished difference Result 496 states and 569 transitions. [2018-04-10 13:34:10,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-04-10 13:34:10,233 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 182 [2018-04-10 13:34:10,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:10,234 INFO L225 Difference]: With dead ends: 496 [2018-04-10 13:34:10,234 INFO L226 Difference]: Without dead ends: 496 [2018-04-10 13:34:10,234 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2451 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2018-04-10 13:34:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2018-04-10 13:34:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 458. [2018-04-10 13:34:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2018-04-10 13:34:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 530 transitions. [2018-04-10 13:34:10,239 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 530 transitions. Word has length 182 [2018-04-10 13:34:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:10,239 INFO L459 AbstractCegarLoop]: Abstraction has 458 states and 530 transitions. [2018-04-10 13:34:10,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-04-10 13:34:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 530 transitions. [2018-04-10 13:34:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-04-10 13:34:10,240 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:10,240 INFO L355 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:10,240 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:10,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2010858408, now seen corresponding path program 36 times [2018-04-10 13:34:10,241 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:10,241 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:10,241 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:10,241 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:10,241 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:10,248 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:10,676 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:10,676 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:10,681 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:34:10,784 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-04-10 13:34:10,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:10,786 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:10,890 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:10,891 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 44 [2018-04-10 13:34:10,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-10 13:34:10,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-10 13:34:10,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=1244, Unknown=0, NotChecked=0, Total=1980 [2018-04-10 13:34:10,891 INFO L87 Difference]: Start difference. First operand 458 states and 530 transitions. Second operand 45 states. [2018-04-10 13:34:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:12,281 INFO L93 Difference]: Finished difference Result 509 states and 584 transitions. [2018-04-10 13:34:12,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-04-10 13:34:12,281 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 187 [2018-04-10 13:34:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:12,283 INFO L225 Difference]: With dead ends: 509 [2018-04-10 13:34:12,283 INFO L226 Difference]: Without dead ends: 509 [2018-04-10 13:34:12,283 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2205, Invalid=4275, Unknown=0, NotChecked=0, Total=6480 [2018-04-10 13:34:12,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2018-04-10 13:34:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 470. [2018-04-10 13:34:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2018-04-10 13:34:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 544 transitions. [2018-04-10 13:34:12,287 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 544 transitions. Word has length 187 [2018-04-10 13:34:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:12,287 INFO L459 AbstractCegarLoop]: Abstraction has 470 states and 544 transitions. [2018-04-10 13:34:12,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-10 13:34:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 544 transitions. [2018-04-10 13:34:12,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-04-10 13:34:12,289 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:12,289 INFO L355 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:12,289 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:12,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1349177771, now seen corresponding path program 37 times [2018-04-10 13:34:12,289 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:12,289 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:12,290 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:12,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:12,290 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:12,300 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:12,714 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:12,714 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:12,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:34:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:12,741 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:13,152 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:13,152 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 78 [2018-04-10 13:34:13,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-04-10 13:34:13,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-04-10 13:34:13,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2018-04-10 13:34:13,153 INFO L87 Difference]: Start difference. First operand 470 states and 544 transitions. Second operand 79 states. [2018-04-10 13:34:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:18,089 INFO L93 Difference]: Finished difference Result 522 states and 599 transitions. [2018-04-10 13:34:18,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-10 13:34:18,089 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 192 [2018-04-10 13:34:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:18,090 INFO L225 Difference]: With dead ends: 522 [2018-04-10 13:34:18,090 INFO L226 Difference]: Without dead ends: 522 [2018-04-10 13:34:18,090 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2018-04-10 13:34:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-04-10 13:34:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 482. [2018-04-10 13:34:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-04-10 13:34:18,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 558 transitions. [2018-04-10 13:34:18,096 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 558 transitions. Word has length 192 [2018-04-10 13:34:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:18,097 INFO L459 AbstractCegarLoop]: Abstraction has 482 states and 558 transitions. [2018-04-10 13:34:18,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-04-10 13:34:18,097 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 558 transitions. [2018-04-10 13:34:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-04-10 13:34:18,098 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:18,098 INFO L355 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:18,098 INFO L408 AbstractCegarLoop]: === Iteration 39 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:18,099 INFO L82 PathProgramCache]: Analyzing trace with hash -659298360, now seen corresponding path program 38 times [2018-04-10 13:34:18,099 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:18,099 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:18,099 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:18,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:34:18,100 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:18,109 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:18,598 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:18,598 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:18,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:34:18,623 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:34:18,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:18,625 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:19,090 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:19,090 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 80 [2018-04-10 13:34:19,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-04-10 13:34:19,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-04-10 13:34:19,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1640, Invalid=4840, Unknown=0, NotChecked=0, Total=6480 [2018-04-10 13:34:19,091 INFO L87 Difference]: Start difference. First operand 482 states and 558 transitions. Second operand 81 states. [2018-04-10 13:34:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:24,192 INFO L93 Difference]: Finished difference Result 535 states and 614 transitions. [2018-04-10 13:34:24,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-10 13:34:24,192 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 197 [2018-04-10 13:34:24,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:24,193 INFO L225 Difference]: With dead ends: 535 [2018-04-10 13:34:24,193 INFO L226 Difference]: Without dead ends: 535 [2018-04-10 13:34:24,193 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2923 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1640, Invalid=4840, Unknown=0, NotChecked=0, Total=6480 [2018-04-10 13:34:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-04-10 13:34:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 494. [2018-04-10 13:34:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2018-04-10 13:34:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 572 transitions. [2018-04-10 13:34:24,197 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 572 transitions. Word has length 197 [2018-04-10 13:34:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:24,197 INFO L459 AbstractCegarLoop]: Abstraction has 494 states and 572 transitions. [2018-04-10 13:34:24,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-04-10 13:34:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 572 transitions. [2018-04-10 13:34:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-04-10 13:34:24,198 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:24,198 INFO L355 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:24,198 INFO L408 AbstractCegarLoop]: === Iteration 40 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:24,198 INFO L82 PathProgramCache]: Analyzing trace with hash 656285237, now seen corresponding path program 39 times [2018-04-10 13:34:24,198 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:24,198 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:24,198 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:24,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:24,199 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:24,205 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:24,673 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:24,673 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:24,678 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:34:24,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-04-10 13:34:24,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:24,892 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:24,937 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:24,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-04-10 13:34:24,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-04-10 13:34:24,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-04-10 13:34:24,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=825, Invalid=981, Unknown=0, NotChecked=0, Total=1806 [2018-04-10 13:34:24,938 INFO L87 Difference]: Start difference. First operand 494 states and 572 transitions. Second operand 43 states. [2018-04-10 13:34:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:26,074 INFO L93 Difference]: Finished difference Result 548 states and 629 transitions. [2018-04-10 13:34:26,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-04-10 13:34:26,075 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 202 [2018-04-10 13:34:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:26,076 INFO L225 Difference]: With dead ends: 548 [2018-04-10 13:34:26,076 INFO L226 Difference]: Without dead ends: 548 [2018-04-10 13:34:26,076 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2463, Invalid=4179, Unknown=0, NotChecked=0, Total=6642 [2018-04-10 13:34:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2018-04-10 13:34:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 506. [2018-04-10 13:34:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2018-04-10 13:34:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 586 transitions. [2018-04-10 13:34:26,081 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 586 transitions. Word has length 202 [2018-04-10 13:34:26,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:26,081 INFO L459 AbstractCegarLoop]: Abstraction has 506 states and 586 transitions. [2018-04-10 13:34:26,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-04-10 13:34:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 586 transitions. [2018-04-10 13:34:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-04-10 13:34:26,082 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:26,083 INFO L355 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:26,083 INFO L408 AbstractCegarLoop]: === Iteration 41 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:26,083 INFO L82 PathProgramCache]: Analyzing trace with hash 715514856, now seen corresponding path program 40 times [2018-04-10 13:34:26,083 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:26,083 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:26,083 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:26,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:26,084 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:26,094 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:26,642 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:26,642 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:26,647 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:34:26,669 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:34:26,669 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:26,672 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:27,339 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:27,339 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 84 [2018-04-10 13:34:27,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-04-10 13:34:27,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-04-10 13:34:27,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1554, Invalid=5586, Unknown=0, NotChecked=0, Total=7140 [2018-04-10 13:34:27,340 INFO L87 Difference]: Start difference. First operand 506 states and 586 transitions. Second operand 85 states. [2018-04-10 13:34:32,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:32,018 INFO L93 Difference]: Finished difference Result 561 states and 644 transitions. [2018-04-10 13:34:32,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-04-10 13:34:32,018 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 207 [2018-04-10 13:34:32,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:32,019 INFO L225 Difference]: With dead ends: 561 [2018-04-10 13:34:32,019 INFO L226 Difference]: Without dead ends: 561 [2018-04-10 13:34:32,020 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2964 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1554, Invalid=5586, Unknown=0, NotChecked=0, Total=7140 [2018-04-10 13:34:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2018-04-10 13:34:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 518. [2018-04-10 13:34:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2018-04-10 13:34:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 600 transitions. [2018-04-10 13:34:32,023 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 600 transitions. Word has length 207 [2018-04-10 13:34:32,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:32,023 INFO L459 AbstractCegarLoop]: Abstraction has 518 states and 600 transitions. [2018-04-10 13:34:32,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-04-10 13:34:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 600 transitions. [2018-04-10 13:34:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-04-10 13:34:32,024 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:32,024 INFO L355 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:32,025 INFO L408 AbstractCegarLoop]: === Iteration 42 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:32,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1616595435, now seen corresponding path program 41 times [2018-04-10 13:34:32,025 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:32,025 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:32,025 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:32,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:32,025 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:32,031 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:32,607 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:32,607 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:32,612 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:34:33,013 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-04-10 13:34:33,013 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:33,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:33,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:33,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 85 [2018-04-10 13:34:33,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-04-10 13:34:33,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-04-10 13:34:33,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-04-10 13:34:33,658 INFO L87 Difference]: Start difference. First operand 518 states and 600 transitions. Second operand 86 states. [2018-04-10 13:34:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:40,686 INFO L93 Difference]: Finished difference Result 574 states and 659 transitions. [2018-04-10 13:34:40,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-10 13:34:40,687 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 212 [2018-04-10 13:34:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:40,688 INFO L225 Difference]: With dead ends: 574 [2018-04-10 13:34:40,688 INFO L226 Difference]: Without dead ends: 574 [2018-04-10 13:34:40,688 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3363 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2018-04-10 13:34:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2018-04-10 13:34:40,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 530. [2018-04-10 13:34:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-04-10 13:34:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 614 transitions. [2018-04-10 13:34:40,691 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 614 transitions. Word has length 212 [2018-04-10 13:34:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:40,692 INFO L459 AbstractCegarLoop]: Abstraction has 530 states and 614 transitions. [2018-04-10 13:34:40,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-04-10 13:34:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 614 transitions. [2018-04-10 13:34:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-04-10 13:34:40,693 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:40,693 INFO L355 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:40,693 INFO L408 AbstractCegarLoop]: === Iteration 43 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:40,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1071855624, now seen corresponding path program 42 times [2018-04-10 13:34:40,693 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:40,693 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:40,694 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:40,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:40,694 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:40,702 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:41,235 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:41,236 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:41,242 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:34:41,394 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-04-10 13:34:41,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:41,396 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:41,500 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:41,501 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 48 [2018-04-10 13:34:41,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-04-10 13:34:41,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-04-10 13:34:41,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=1388, Unknown=0, NotChecked=0, Total=2352 [2018-04-10 13:34:41,502 INFO L87 Difference]: Start difference. First operand 530 states and 614 transitions. Second operand 49 states. [2018-04-10 13:34:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:42,833 INFO L93 Difference]: Finished difference Result 587 states and 674 transitions. [2018-04-10 13:34:42,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-10 13:34:42,833 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 217 [2018-04-10 13:34:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:42,835 INFO L225 Difference]: With dead ends: 587 [2018-04-10 13:34:42,835 INFO L226 Difference]: Without dead ends: 587 [2018-04-10 13:34:42,835 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2936, Invalid=5254, Unknown=0, NotChecked=0, Total=8190 [2018-04-10 13:34:42,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-04-10 13:34:42,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 542. [2018-04-10 13:34:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2018-04-10 13:34:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 628 transitions. [2018-04-10 13:34:42,840 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 628 transitions. Word has length 217 [2018-04-10 13:34:42,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:42,840 INFO L459 AbstractCegarLoop]: Abstraction has 542 states and 628 transitions. [2018-04-10 13:34:42,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-04-10 13:34:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 628 transitions. [2018-04-10 13:34:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-04-10 13:34:42,842 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:42,842 INFO L355 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:42,842 INFO L408 AbstractCegarLoop]: === Iteration 44 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash -701041163, now seen corresponding path program 43 times [2018-04-10 13:34:42,842 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:42,842 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:42,843 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:42,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:42,843 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:42,849 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:43,421 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:43,422 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:43,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:34:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:43,453 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:44,020 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:44,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 90 [2018-04-10 13:34:44,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-04-10 13:34:44,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-04-10 13:34:44,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2115, Invalid=6075, Unknown=0, NotChecked=0, Total=8190 [2018-04-10 13:34:44,021 INFO L87 Difference]: Start difference. First operand 542 states and 628 transitions. Second operand 91 states. [2018-04-10 13:34:48,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:48,117 INFO L93 Difference]: Finished difference Result 600 states and 689 transitions. [2018-04-10 13:34:48,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-04-10 13:34:48,117 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 222 [2018-04-10 13:34:48,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:48,119 INFO L225 Difference]: With dead ends: 600 [2018-04-10 13:34:48,119 INFO L226 Difference]: Without dead ends: 600 [2018-04-10 13:34:48,119 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3783 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2115, Invalid=6075, Unknown=0, NotChecked=0, Total=8190 [2018-04-10 13:34:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2018-04-10 13:34:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 554. [2018-04-10 13:34:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-04-10 13:34:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 642 transitions. [2018-04-10 13:34:48,122 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 642 transitions. Word has length 222 [2018-04-10 13:34:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:48,123 INFO L459 AbstractCegarLoop]: Abstraction has 554 states and 642 transitions. [2018-04-10 13:34:48,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-04-10 13:34:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 642 transitions. [2018-04-10 13:34:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-04-10 13:34:48,124 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:48,124 INFO L355 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:48,124 INFO L408 AbstractCegarLoop]: === Iteration 45 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:48,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1411245096, now seen corresponding path program 44 times [2018-04-10 13:34:48,124 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:48,124 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:48,124 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:48,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:34:48,124 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:48,130 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:48,692 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:48,692 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:48,696 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:34:48,720 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:34:48,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:48,723 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:49,381 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:49,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 92 [2018-04-10 13:34:49,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-04-10 13:34:49,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-04-10 13:34:49,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2070, Invalid=6486, Unknown=0, NotChecked=0, Total=8556 [2018-04-10 13:34:49,382 INFO L87 Difference]: Start difference. First operand 554 states and 642 transitions. Second operand 93 states. [2018-04-10 13:34:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:54,208 INFO L93 Difference]: Finished difference Result 613 states and 704 transitions. [2018-04-10 13:34:54,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-04-10 13:34:54,208 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 227 [2018-04-10 13:34:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:54,210 INFO L225 Difference]: With dead ends: 613 [2018-04-10 13:34:54,210 INFO L226 Difference]: Without dead ends: 613 [2018-04-10 13:34:54,210 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3818 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2070, Invalid=6486, Unknown=0, NotChecked=0, Total=8556 [2018-04-10 13:34:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2018-04-10 13:34:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 566. [2018-04-10 13:34:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2018-04-10 13:34:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 656 transitions. [2018-04-10 13:34:54,215 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 656 transitions. Word has length 227 [2018-04-10 13:34:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:54,215 INFO L459 AbstractCegarLoop]: Abstraction has 566 states and 656 transitions. [2018-04-10 13:34:54,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-04-10 13:34:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 656 transitions. [2018-04-10 13:34:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-04-10 13:34:54,217 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:54,217 INFO L355 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:54,217 INFO L408 AbstractCegarLoop]: === Iteration 46 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:54,217 INFO L82 PathProgramCache]: Analyzing trace with hash 241360341, now seen corresponding path program 45 times [2018-04-10 13:34:54,217 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:54,217 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:54,218 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:54,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:54,218 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:54,225 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:54,866 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:54,866 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:54,871 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:34:55,200 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-04-10 13:34:55,201 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:55,204 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:55,277 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:55,278 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-04-10 13:34:55,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-04-10 13:34:55,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-04-10 13:34:55,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=1266, Unknown=0, NotChecked=0, Total=2352 [2018-04-10 13:34:55,278 INFO L87 Difference]: Start difference. First operand 566 states and 656 transitions. Second operand 49 states. [2018-04-10 13:34:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:34:56,752 INFO L93 Difference]: Finished difference Result 626 states and 719 transitions. [2018-04-10 13:34:56,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-10 13:34:56,753 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 232 [2018-04-10 13:34:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:34:56,754 INFO L225 Difference]: With dead ends: 626 [2018-04-10 13:34:56,754 INFO L226 Difference]: Without dead ends: 626 [2018-04-10 13:34:56,755 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3246, Invalid=5496, Unknown=0, NotChecked=0, Total=8742 [2018-04-10 13:34:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2018-04-10 13:34:56,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 578. [2018-04-10 13:34:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2018-04-10 13:34:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 670 transitions. [2018-04-10 13:34:56,759 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 670 transitions. Word has length 232 [2018-04-10 13:34:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:34:56,759 INFO L459 AbstractCegarLoop]: Abstraction has 578 states and 670 transitions. [2018-04-10 13:34:56,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-04-10 13:34:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 670 transitions. [2018-04-10 13:34:56,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-04-10 13:34:56,760 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:34:56,760 INFO L355 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-04-10 13:34:56,760 INFO L408 AbstractCegarLoop]: === Iteration 47 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:34:56,760 INFO L82 PathProgramCache]: Analyzing trace with hash 747104328, now seen corresponding path program 46 times [2018-04-10 13:34:56,760 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:34:56,760 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:34:56,761 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:56,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:34:56,761 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:34:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:34:56,768 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:34:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:57,434 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:34:57,434 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:34:57,447 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:34:57,475 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:34:57,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:34:57,477 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:34:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:34:58,209 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:34:58,209 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 96 [2018-04-10 13:34:58,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-04-10 13:34:58,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-04-10 13:34:58,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2352, Invalid=6960, Unknown=0, NotChecked=0, Total=9312 [2018-04-10 13:34:58,211 INFO L87 Difference]: Start difference. First operand 578 states and 670 transitions. Second operand 97 states. [2018-04-10 13:35:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:03,180 INFO L93 Difference]: Finished difference Result 639 states and 734 transitions. [2018-04-10 13:35:03,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-04-10 13:35:03,180 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 237 [2018-04-10 13:35:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:03,181 INFO L225 Difference]: With dead ends: 639 [2018-04-10 13:35:03,181 INFO L226 Difference]: Without dead ends: 639 [2018-04-10 13:35:03,182 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2352, Invalid=6960, Unknown=0, NotChecked=0, Total=9312 [2018-04-10 13:35:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2018-04-10 13:35:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 590. [2018-04-10 13:35:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2018-04-10 13:35:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 684 transitions. [2018-04-10 13:35:03,185 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 684 transitions. Word has length 237 [2018-04-10 13:35:03,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:03,185 INFO L459 AbstractCegarLoop]: Abstraction has 590 states and 684 transitions. [2018-04-10 13:35:03,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-04-10 13:35:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 684 transitions. [2018-04-10 13:35:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-04-10 13:35:03,186 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:03,186 INFO L355 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:03,186 INFO L408 AbstractCegarLoop]: === Iteration 48 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:03,186 INFO L82 PathProgramCache]: Analyzing trace with hash -231313995, now seen corresponding path program 47 times [2018-04-10 13:35:03,187 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:03,187 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:03,187 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:03,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:35:03,187 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:03,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:03,852 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:03,853 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:03,858 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:35:04,460 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-04-10 13:35:04,460 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:35:04,464 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:05,231 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:05,231 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 97 [2018-04-10 13:35:05,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-04-10 13:35:05,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-04-10 13:35:05,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-04-10 13:35:05,233 INFO L87 Difference]: Start difference. First operand 590 states and 684 transitions. Second operand 98 states. [2018-04-10 13:35:11,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:11,141 INFO L93 Difference]: Finished difference Result 652 states and 749 transitions. [2018-04-10 13:35:11,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-04-10 13:35:11,141 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 242 [2018-04-10 13:35:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:11,143 INFO L225 Difference]: With dead ends: 652 [2018-04-10 13:35:11,143 INFO L226 Difference]: Without dead ends: 652 [2018-04-10 13:35:11,143 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4419 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2499, Invalid=7203, Unknown=0, NotChecked=0, Total=9702 [2018-04-10 13:35:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-04-10 13:35:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 602. [2018-04-10 13:35:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2018-04-10 13:35:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 698 transitions. [2018-04-10 13:35:11,146 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 698 transitions. Word has length 242 [2018-04-10 13:35:11,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:11,146 INFO L459 AbstractCegarLoop]: Abstraction has 602 states and 698 transitions. [2018-04-10 13:35:11,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-04-10 13:35:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 698 transitions. [2018-04-10 13:35:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-04-10 13:35:11,147 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:11,147 INFO L355 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:11,147 INFO L408 AbstractCegarLoop]: === Iteration 49 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:11,147 INFO L82 PathProgramCache]: Analyzing trace with hash 936592488, now seen corresponding path program 48 times [2018-04-10 13:35:11,148 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:11,148 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:11,148 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:11,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:35:11,148 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:11,154 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:11,800 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:11,800 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:11,805 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:35:12,011 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-04-10 13:35:12,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:35:12,015 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:12,639 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:12,639 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 68 [2018-04-10 13:35:12,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-04-10 13:35:12,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-04-10 13:35:12,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1432, Invalid=3260, Unknown=0, NotChecked=0, Total=4692 [2018-04-10 13:35:12,641 INFO L87 Difference]: Start difference. First operand 602 states and 698 transitions. Second operand 69 states. [2018-04-10 13:35:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:15,870 INFO L93 Difference]: Finished difference Result 665 states and 764 transitions. [2018-04-10 13:35:15,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-04-10 13:35:15,871 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 247 [2018-04-10 13:35:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:15,872 INFO L225 Difference]: With dead ends: 665 [2018-04-10 13:35:15,872 INFO L226 Difference]: Without dead ends: 665 [2018-04-10 13:35:15,873 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3855, Invalid=9717, Unknown=0, NotChecked=0, Total=13572 [2018-04-10 13:35:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2018-04-10 13:35:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 614. [2018-04-10 13:35:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2018-04-10 13:35:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 712 transitions. [2018-04-10 13:35:15,876 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 712 transitions. Word has length 247 [2018-04-10 13:35:15,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:15,877 INFO L459 AbstractCegarLoop]: Abstraction has 614 states and 712 transitions. [2018-04-10 13:35:15,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-04-10 13:35:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 712 transitions. [2018-04-10 13:35:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-04-10 13:35:15,877 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:15,878 INFO L355 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:15,878 INFO L408 AbstractCegarLoop]: === Iteration 50 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:15,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1916773781, now seen corresponding path program 49 times [2018-04-10 13:35:15,878 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:15,878 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:15,878 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:15,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:35:15,878 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:15,885 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:16,661 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:16,662 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:16,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:35:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:16,694 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:17,428 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:17,440 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 102 [2018-04-10 13:35:17,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-04-10 13:35:17,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-04-10 13:35:17,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=7803, Unknown=0, NotChecked=0, Total=10506 [2018-04-10 13:35:17,442 INFO L87 Difference]: Start difference. First operand 614 states and 712 transitions. Second operand 103 states. [2018-04-10 13:35:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:23,517 INFO L93 Difference]: Finished difference Result 678 states and 779 transitions. [2018-04-10 13:35:23,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-04-10 13:35:23,517 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 252 [2018-04-10 13:35:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:23,519 INFO L225 Difference]: With dead ends: 678 [2018-04-10 13:35:23,519 INFO L226 Difference]: Without dead ends: 678 [2018-04-10 13:35:23,519 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4899 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2703, Invalid=7803, Unknown=0, NotChecked=0, Total=10506 [2018-04-10 13:35:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2018-04-10 13:35:23,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 626. [2018-04-10 13:35:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2018-04-10 13:35:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 726 transitions. [2018-04-10 13:35:23,523 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 726 transitions. Word has length 252 [2018-04-10 13:35:23,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:23,523 INFO L459 AbstractCegarLoop]: Abstraction has 626 states and 726 transitions. [2018-04-10 13:35:23,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-04-10 13:35:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 726 transitions. [2018-04-10 13:35:23,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-04-10 13:35:23,524 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:23,524 INFO L355 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:23,524 INFO L408 AbstractCegarLoop]: === Iteration 51 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:23,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1372456824, now seen corresponding path program 50 times [2018-04-10 13:35:23,525 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:23,525 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:23,525 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:23,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:35:23,525 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:23,532 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:24,257 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:24,257 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:24,262 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:35:24,291 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:35:24,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:35:24,294 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:25,019 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:25,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 104 [2018-04-10 13:35:25,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-04-10 13:35:25,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-04-10 13:35:25,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2756, Invalid=8164, Unknown=0, NotChecked=0, Total=10920 [2018-04-10 13:35:25,021 INFO L87 Difference]: Start difference. First operand 626 states and 726 transitions. Second operand 105 states. [2018-04-10 13:35:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:32,600 INFO L93 Difference]: Finished difference Result 691 states and 794 transitions. [2018-04-10 13:35:32,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-04-10 13:35:32,601 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 257 [2018-04-10 13:35:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:32,602 INFO L225 Difference]: With dead ends: 691 [2018-04-10 13:35:32,602 INFO L226 Difference]: Without dead ends: 691 [2018-04-10 13:35:32,602 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5047 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2756, Invalid=8164, Unknown=0, NotChecked=0, Total=10920 [2018-04-10 13:35:32,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2018-04-10 13:35:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 638. [2018-04-10 13:35:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2018-04-10 13:35:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 740 transitions. [2018-04-10 13:35:32,606 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 740 transitions. Word has length 257 [2018-04-10 13:35:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:32,606 INFO L459 AbstractCegarLoop]: Abstraction has 638 states and 740 transitions. [2018-04-10 13:35:32,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-04-10 13:35:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 740 transitions. [2018-04-10 13:35:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-04-10 13:35:32,607 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:32,607 INFO L355 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:32,607 INFO L408 AbstractCegarLoop]: === Iteration 52 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1517517451, now seen corresponding path program 51 times [2018-04-10 13:35:32,608 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:32,608 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:32,608 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:32,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:35:32,608 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:32,615 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:33,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:33,392 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:33,392 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:33,398 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:35:33,920 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-04-10 13:35:33,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:35:33,924 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:33,979 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:33,979 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-04-10 13:35:33,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-04-10 13:35:33,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-04-10 13:35:33,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1383, Invalid=1587, Unknown=0, NotChecked=0, Total=2970 [2018-04-10 13:35:33,981 INFO L87 Difference]: Start difference. First operand 638 states and 740 transitions. Second operand 55 states. [2018-04-10 13:35:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:35,811 INFO L93 Difference]: Finished difference Result 704 states and 809 transitions. [2018-04-10 13:35:35,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-04-10 13:35:35,811 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 262 [2018-04-10 13:35:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:35,813 INFO L225 Difference]: With dead ends: 704 [2018-04-10 13:35:35,813 INFO L226 Difference]: Without dead ends: 704 [2018-04-10 13:35:35,813 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=4137, Invalid=6993, Unknown=0, NotChecked=0, Total=11130 [2018-04-10 13:35:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2018-04-10 13:35:35,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 650. [2018-04-10 13:35:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2018-04-10 13:35:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 754 transitions. [2018-04-10 13:35:35,817 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 754 transitions. Word has length 262 [2018-04-10 13:35:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:35,817 INFO L459 AbstractCegarLoop]: Abstraction has 650 states and 754 transitions. [2018-04-10 13:35:35,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-04-10 13:35:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 754 transitions. [2018-04-10 13:35:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-04-10 13:35:35,818 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:35,818 INFO L355 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:35,818 INFO L408 AbstractCegarLoop]: === Iteration 53 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:35,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1319762776, now seen corresponding path program 52 times [2018-04-10 13:35:35,819 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:35,819 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:35,819 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:35,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:35:35,819 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:35,826 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:36,627 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:36,627 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:36,633 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:35:36,661 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:35:36,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:35:36,664 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:37,518 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:37,518 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 108 [2018-04-10 13:35:37,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-04-10 13:35:37,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-04-10 13:35:37,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2862, Invalid=8910, Unknown=0, NotChecked=0, Total=11772 [2018-04-10 13:35:37,520 INFO L87 Difference]: Start difference. First operand 650 states and 754 transitions. Second operand 109 states. [2018-04-10 13:35:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:44,090 INFO L93 Difference]: Finished difference Result 717 states and 824 transitions. [2018-04-10 13:35:44,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-04-10 13:35:44,090 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 267 [2018-04-10 13:35:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:44,092 INFO L225 Difference]: With dead ends: 717 [2018-04-10 13:35:44,092 INFO L226 Difference]: Without dead ends: 717 [2018-04-10 13:35:44,092 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5346 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2862, Invalid=8910, Unknown=0, NotChecked=0, Total=11772 [2018-04-10 13:35:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2018-04-10 13:35:44,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 662. [2018-04-10 13:35:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2018-04-10 13:35:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 768 transitions. [2018-04-10 13:35:44,096 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 768 transitions. Word has length 267 [2018-04-10 13:35:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:44,096 INFO L459 AbstractCegarLoop]: Abstraction has 662 states and 768 transitions. [2018-04-10 13:35:44,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-04-10 13:35:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 768 transitions. [2018-04-10 13:35:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-04-10 13:35:44,097 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:44,097 INFO L355 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:44,097 INFO L408 AbstractCegarLoop]: === Iteration 54 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:44,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1448407723, now seen corresponding path program 53 times [2018-04-10 13:35:44,098 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:44,098 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:44,098 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:44,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:35:44,098 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:44,106 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:44,968 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:44,968 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:44,973 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:35:45,971 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-04-10 13:35:45,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:35:45,976 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:47,025 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:47,025 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 109 [2018-04-10 13:35:47,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-04-10 13:35:47,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-04-10 13:35:47,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-04-10 13:35:47,027 INFO L87 Difference]: Start difference. First operand 662 states and 768 transitions. Second operand 110 states. [2018-04-10 13:35:53,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:53,925 INFO L93 Difference]: Finished difference Result 730 states and 839 transitions. [2018-04-10 13:35:53,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-04-10 13:35:53,925 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 272 [2018-04-10 13:35:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:53,927 INFO L225 Difference]: With dead ends: 730 [2018-04-10 13:35:53,927 INFO L226 Difference]: Without dead ends: 730 [2018-04-10 13:35:53,927 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5619 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3135, Invalid=9075, Unknown=0, NotChecked=0, Total=12210 [2018-04-10 13:35:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2018-04-10 13:35:53,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 674. [2018-04-10 13:35:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2018-04-10 13:35:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 782 transitions. [2018-04-10 13:35:53,931 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 782 transitions. Word has length 272 [2018-04-10 13:35:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:53,931 INFO L459 AbstractCegarLoop]: Abstraction has 674 states and 782 transitions. [2018-04-10 13:35:53,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-04-10 13:35:53,931 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 782 transitions. [2018-04-10 13:35:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-04-10 13:35:53,932 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:53,932 INFO L355 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:53,932 INFO L408 AbstractCegarLoop]: === Iteration 55 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1819371720, now seen corresponding path program 54 times [2018-04-10 13:35:53,933 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:53,933 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:53,933 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:53,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:35:53,933 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:53,941 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:54,800 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:54,800 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:54,805 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:35:55,079 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-04-10 13:35:55,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:35:55,083 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:55,190 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:55,190 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 60 [2018-04-10 13:35:55,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-04-10 13:35:55,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-04-10 13:35:55,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1558, Invalid=2102, Unknown=0, NotChecked=0, Total=3660 [2018-04-10 13:35:55,191 INFO L87 Difference]: Start difference. First operand 674 states and 782 transitions. Second operand 61 states. [2018-04-10 13:35:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:35:57,012 INFO L93 Difference]: Finished difference Result 743 states and 854 transitions. [2018-04-10 13:35:57,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-04-10 13:35:57,012 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 277 [2018-04-10 13:35:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:35:57,013 INFO L225 Difference]: With dead ends: 743 [2018-04-10 13:35:57,013 INFO L226 Difference]: Without dead ends: 743 [2018-04-10 13:35:57,014 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4742, Invalid=8368, Unknown=0, NotChecked=0, Total=13110 [2018-04-10 13:35:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-04-10 13:35:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 686. [2018-04-10 13:35:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-04-10 13:35:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 796 transitions. [2018-04-10 13:35:57,018 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 796 transitions. Word has length 277 [2018-04-10 13:35:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:35:57,018 INFO L459 AbstractCegarLoop]: Abstraction has 686 states and 796 transitions. [2018-04-10 13:35:57,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-04-10 13:35:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 796 transitions. [2018-04-10 13:35:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-04-10 13:35:57,019 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:35:57,019 INFO L355 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-04-10 13:35:57,019 INFO L408 AbstractCegarLoop]: === Iteration 56 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:35:57,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2102837963, now seen corresponding path program 55 times [2018-04-10 13:35:57,019 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:35:57,019 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:35:57,019 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:57,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:35:57,020 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:35:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:57,026 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:35:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:57,853 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:35:57,853 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:35:57,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:35:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:35:57,885 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:35:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:35:58,688 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:35:58,689 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 114 [2018-04-10 13:35:58,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-04-10 13:35:58,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-04-10 13:35:58,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3363, Invalid=9747, Unknown=0, NotChecked=0, Total=13110 [2018-04-10 13:35:58,691 INFO L87 Difference]: Start difference. First operand 686 states and 796 transitions. Second operand 115 states. [2018-04-10 13:36:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:36:06,540 INFO L93 Difference]: Finished difference Result 756 states and 869 transitions. [2018-04-10 13:36:06,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-04-10 13:36:06,540 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 282 [2018-04-10 13:36:06,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:36:06,541 INFO L225 Difference]: With dead ends: 756 [2018-04-10 13:36:06,541 INFO L226 Difference]: Without dead ends: 756 [2018-04-10 13:36:06,542 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3363, Invalid=9747, Unknown=0, NotChecked=0, Total=13110 [2018-04-10 13:36:06,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-04-10 13:36:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 698. [2018-04-10 13:36:06,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2018-04-10 13:36:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 810 transitions. [2018-04-10 13:36:06,546 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 810 transitions. Word has length 282 [2018-04-10 13:36:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:36:06,546 INFO L459 AbstractCegarLoop]: Abstraction has 698 states and 810 transitions. [2018-04-10 13:36:06,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-04-10 13:36:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 810 transitions. [2018-04-10 13:36:06,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-04-10 13:36:06,547 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:36:06,547 INFO L355 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-04-10 13:36:06,547 INFO L408 AbstractCegarLoop]: === Iteration 57 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr5AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 13:36:06,547 INFO L82 PathProgramCache]: Analyzing trace with hash 875963624, now seen corresponding path program 56 times [2018-04-10 13:36:06,547 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:36:06,547 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:36:06,547 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:36:06,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:36:06,548 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:36:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:36:06,555 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:36:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:36:07,434 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:36:07,434 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-10 13:36:07,439 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:36:07,467 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:36:07,467 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:36:07,470 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:36:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:36:08,462 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:36:08,462 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 116 [2018-04-10 13:36:08,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-04-10 13:36:08,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-04-10 13:36:08,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3074, Invalid=10498, Unknown=0, NotChecked=0, Total=13572 [2018-04-10 13:36:08,464 INFO L87 Difference]: Start difference. First operand 698 states and 810 transitions. Second operand 117 states. Received shutdown request... [2018-04-10 13:36:11,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-04-10 13:36:11,660 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-10 13:36:11,663 WARN L197 ceAbstractionStarter]: Timeout [2018-04-10 13:36:11,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 01:36:11 BoogieIcfgContainer [2018-04-10 13:36:11,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-10 13:36:11,664 INFO L168 Benchmark]: Toolchain (without parser) took 179955.90 ms. Allocated memory was 401.1 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 344.8 MB in the beginning and 1.2 GB in the end (delta: -860.2 MB). Peak memory consumption was 296.9 MB. Max. memory is 5.3 GB. [2018-04-10 13:36:11,665 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 401.1 MB. Free memory is still 364.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 13:36:11,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.25 ms. Allocated memory is still 401.1 MB. Free memory was 344.8 MB in the beginning and 335.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. [2018-04-10 13:36:11,665 INFO L168 Benchmark]: Boogie Preprocessor took 18.83 ms. Allocated memory is still 401.1 MB. Free memory was 335.6 MB in the beginning and 334.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-04-10 13:36:11,665 INFO L168 Benchmark]: RCFGBuilder took 188.01 ms. Allocated memory was 401.1 MB in the beginning and 606.6 MB in the end (delta: 205.5 MB). Free memory was 334.3 MB in the beginning and 573.9 MB in the end (delta: -239.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 5.3 GB. [2018-04-10 13:36:11,666 INFO L168 Benchmark]: TraceAbstraction took 179604.55 ms. Allocated memory was 606.6 MB in the beginning and 1.6 GB in the end (delta: 951.6 MB). Free memory was 573.9 MB in the beginning and 1.2 GB in the end (delta: -631.1 MB). Peak memory consumption was 320.5 MB. Max. memory is 5.3 GB. [2018-04-10 13:36:11,667 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 401.1 MB. Free memory is still 364.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 142.25 ms. Allocated memory is still 401.1 MB. Free memory was 344.8 MB in the beginning and 335.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 18.83 ms. Allocated memory is still 401.1 MB. Free memory was 335.6 MB in the beginning and 334.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 188.01 ms. Allocated memory was 401.1 MB in the beginning and 606.6 MB in the end (delta: 205.5 MB). Free memory was 334.3 MB in the beginning and 573.9 MB in the end (delta: -239.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 179604.55 ms. Allocated memory was 606.6 MB in the beginning and 1.6 GB in the end (delta: 951.6 MB). Free memory was 573.9 MB in the beginning and 1.2 GB in the end (delta: -631.1 MB). Peak memory consumption was 320.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (698states) and interpolant automaton (currently 59 states, 117 states before enhancement), while ReachableStatesComputation was computing reachable states (499 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was constructing difference of abstraction (698states) and interpolant automaton (currently 59 states, 117 states before enhancement), while ReachableStatesComputation was computing reachable states (499 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was constructing difference of abstraction (698states) and interpolant automaton (currently 59 states, 117 states before enhancement), while ReachableStatesComputation was computing reachable states (499 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was constructing difference of abstraction (698states) and interpolant automaton (currently 59 states, 117 states before enhancement), while ReachableStatesComputation was computing reachable states (499 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was constructing difference of abstraction (698states) and interpolant automaton (currently 59 states, 117 states before enhancement), while ReachableStatesComputation was computing reachable states (499 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 7). Cancelled while BasicCegarLoop was constructing difference of abstraction (698states) and interpolant automaton (currently 59 states, 117 states before enhancement), while ReachableStatesComputation was computing reachable states (499 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 6 error locations. TIMEOUT Result, 179.5s OverallTime, 57 OverallIterations, 57 TraceHistogramMax, 135.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7162 SDtfs, 48965 SDslu, 149220 SDs, 0 SdLazy, 538345 SolverSat, 17661 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10598 GetRequests, 7274 SyntacticMatches, 6 SemanticMatches, 3318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91282 ImplicationChecksByTransitivity, 37.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=698occurred in iteration=56, 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, 56 MinimizatonAttempts, 1708 StatesRemovedByMinimization, 56 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 35.7s InterpolantComputationTime, 16751 NumberOfCodeBlocks, 16751 NumberOfCodeBlocksAsserted, 906 NumberOfCheckSat, 16638 ConstructedInterpolants, 0 QuantifiedInterpolants, 11222460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 18340 ConjunctsInSsa, 2865 ConjunctsInUnsatCore, 113 InterpolantComputations, 1 PerfectInterpolantSequences, 0/298984 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_strcpy_original_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-10_13-36-11-673.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_strcpy_original_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-10_13-36-11-673.csv Completed graceful shutdown