java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0621a_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 15:59:29,373 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 15:59:29,375 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 15:59:29,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 15:59:29,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 15:59:29,392 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 15:59:29,395 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 15:59:29,397 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 15:59:29,398 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 15:59:29,399 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 15:59:29,400 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 15:59:29,400 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 15:59:29,402 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 15:59:29,403 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 15:59:29,404 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 15:59:29,407 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 15:59:29,408 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 15:59:29,418 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 15:59:29,421 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 15:59:29,426 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 15:59:29,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 15:59:29,430 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 15:59:29,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 15:59:29,435 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 15:59:29,435 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 15:59:29,438 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 15:59:29,439 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 15:59:29,440 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 15:59:29,442 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 15:59:29,445 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 15:59:29,445 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 15:59:29,446 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 15:59:29,446 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 15:59:29,446 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 15:59:29,449 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 15:59:29,450 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 15:59:29,450 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 15:59:29,479 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 15:59:29,479 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 15:59:29,480 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 15:59:29,480 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 15:59:29,481 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 15:59:29,481 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 15:59:29,482 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 15:59:29,483 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 15:59:29,483 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 15:59:29,483 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 15:59:29,483 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 15:59:29,483 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 15:59:29,484 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 15:59:29,484 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 15:59:29,484 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 15:59:29,485 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 15:59:29,486 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 15:59:29,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 15:59:29,486 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 15:59:29,486 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 15:59:29,486 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 15:59:29,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 15:59:29,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 15:59:29,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:59:29,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 15:59:29,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 15:59:29,488 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 15:59:29,488 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 15:59:29,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 15:59:29,489 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 15:59:29,489 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 15:59:29,489 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 15:59:29,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 15:59:29,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 15:59:29,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 15:59:29,582 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 15:59:29,583 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 15:59:29,583 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0621a_true-unreach-call.c [2018-09-19 15:59:29,935 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b239518/b2daf6679cde4aa7a2acfda3cf19d7a1/FLAG8a4340d65 [2018-09-19 15:59:30,090 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 15:59:30,091 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0621a_true-unreach-call.c [2018-09-19 15:59:30,102 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b239518/b2daf6679cde4aa7a2acfda3cf19d7a1/FLAG8a4340d65 [2018-09-19 15:59:30,117 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b239518/b2daf6679cde4aa7a2acfda3cf19d7a1 [2018-09-19 15:59:30,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 15:59:30,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 15:59:30,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 15:59:30,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 15:59:30,140 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 15:59:30,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d05c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30, skipping insertion in model container [2018-09-19 15:59:30,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,159 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 15:59:30,458 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:59:30,498 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 15:59:30,583 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:59:30,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30 WrapperNode [2018-09-19 15:59:30,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 15:59:30,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 15:59:30,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 15:59:30,626 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 15:59:30,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (1/1) ... [2018-09-19 15:59:30,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 15:59:30,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 15:59:30,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 15:59:30,700 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 15:59:30,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (1/1) ... No working directory specified, using /storage/repos/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 [2018-09-19 15:59:30,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 15:59:30,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 15:59:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 15:59:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2018-09-19 15:59:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 15:59:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 15:59:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 15:59:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 15:59:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 15:59:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 15:59:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 15:59:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 15:59:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 15:59:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 15:59:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2018-09-19 15:59:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 15:59:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 15:59:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 15:59:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 15:59:30,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 15:59:31,265 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:31,311 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:31,411 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:50,048 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:50,065 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:50,105 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:50,136 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:51,236 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 15:59:51,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:59:51 BoogieIcfgContainer [2018-09-19 15:59:51,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 15:59:51,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 15:59:51,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 15:59:51,242 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 15:59:51,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:59:30" (1/3) ... [2018-09-19 15:59:51,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6408f20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:59:51, skipping insertion in model container [2018-09-19 15:59:51,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:30" (2/3) ... [2018-09-19 15:59:51,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6408f20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:59:51, skipping insertion in model container [2018-09-19 15:59:51,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:59:51" (3/3) ... [2018-09-19 15:59:51,246 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621a_true-unreach-call.c [2018-09-19 15:59:51,258 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 15:59:51,267 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 15:59:51,322 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 15:59:51,323 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 15:59:51,324 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 15:59:51,324 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 15:59:51,324 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 15:59:51,324 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 15:59:51,324 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 15:59:51,325 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 15:59:51,325 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 15:59:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2018-09-19 15:59:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-19 15:59:51,355 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:59:51,356 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:59:51,359 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:59:51,364 INFO L82 PathProgramCache]: Analyzing trace with hash 652954868, now seen corresponding path program 1 times [2018-09-19 15:59:51,371 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:59:51,371 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 15:59:51,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 15:59:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:59:51,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:59:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:59:51,560 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:59:51,576 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:59:51,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 15:59:51,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 15:59:51,595 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 15:59:51,596 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:59:51,598 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2018-09-19 15:59:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:59:51,628 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2018-09-19 15:59:51,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 15:59:51,630 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-19 15:59:51,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:59:51,642 INFO L225 Difference]: With dead ends: 154 [2018-09-19 15:59:51,642 INFO L226 Difference]: Without dead ends: 77 [2018-09-19 15:59:51,646 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:59:51,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-19 15:59:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-19 15:59:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-19 15:59:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2018-09-19 15:59:51,694 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 18 [2018-09-19 15:59:51,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:59:51,695 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2018-09-19 15:59:51,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 15:59:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2018-09-19 15:59:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-19 15:59:51,697 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:59:51,697 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:59:51,697 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:59:51,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2090612603, now seen corresponding path program 1 times [2018-09-19 15:59:51,698 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:59:51,699 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 15:59:51,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:59:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:59:51,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:59:52,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 15:59:52,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 15:59:52,020 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 15:59:52,046 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 15:59:52,135 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 15:59:52,136 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 15:59:52,263 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 15:59:52,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 15:59:52,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 15:59:52,298 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 15:59:52,361 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 15:59:52,361 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 15:59:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:59:52,766 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:59:52,781 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:59:52,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 15:59:52,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 15:59:52,783 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 15:59:52,784 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 15:59:52,785 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 9 states. [2018-09-19 16:00:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:00:16,522 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2018-09-19 16:00:16,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:00:16,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-19 16:00:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:00:16,922 INFO L225 Difference]: With dead ends: 87 [2018-09-19 16:00:16,922 INFO L226 Difference]: Without dead ends: 81 [2018-09-19 16:00:16,924 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:00:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-19 16:00:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2018-09-19 16:00:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-19 16:00:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2018-09-19 16:00:16,937 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 28 [2018-09-19 16:00:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:00:16,937 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2018-09-19 16:00:16,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:00:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2018-09-19 16:00:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-19 16:00:16,939 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:00:16,939 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:00:16,939 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:00:16,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1110976039, now seen corresponding path program 1 times [2018-09-19 16:00:16,940 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:00:16,940 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:00:16,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:00:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:00:21,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:00:21,068 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:00:21,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:00:21,093 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:21,098 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:21,119 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:21,120 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:00:21,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:00:21,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:00:21,176 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:21,179 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:21,190 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:21,191 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:00:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:00:21,443 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:00:21,520 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:00:21,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:00:21,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:00:21,521 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:00:21,521 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:00:21,521 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 9 states. [2018-09-19 16:00:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:00:47,997 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2018-09-19 16:00:48,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:00:48,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-19 16:00:48,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:00:48,084 INFO L225 Difference]: With dead ends: 90 [2018-09-19 16:00:48,084 INFO L226 Difference]: Without dead ends: 76 [2018-09-19 16:00:48,085 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:00:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-19 16:00:48,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2018-09-19 16:00:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-19 16:00:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2018-09-19 16:00:48,095 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 30 [2018-09-19 16:00:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:00:48,096 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2018-09-19 16:00:48,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:00:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2018-09-19 16:00:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-19 16:00:48,098 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:00:48,098 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:00:48,098 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:00:48,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1277129167, now seen corresponding path program 1 times [2018-09-19 16:00:48,099 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:00:48,099 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 16:00:48,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:00:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:00:48,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:00:48,281 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:00:48,288 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:00:48,289 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:48,310 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:48,352 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:48,352 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:00:48,419 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:00:48,433 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:00:48,434 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:48,442 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:48,475 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:48,476 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:00:48,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2018-09-19 16:00:48,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-09-19 16:00:48,716 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:48,723 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:48,758 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:48,759 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2018-09-19 16:00:48,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-09-19 16:00:48,839 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-09-19 16:00:48,839 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:48,846 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:48,875 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:48,875 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:40, output treesize:29 [2018-09-19 16:00:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:00:49,362 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:00:49,375 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:00:49,376 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 16:00:49,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 16:00:49,377 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 16:00:49,377 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:00:49,377 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 12 states. [2018-09-19 16:00:50,939 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-09-19 16:00:51,264 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-09-19 16:00:51,681 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2018-09-19 16:00:52,062 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-09-19 16:00:52,472 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-09-19 16:01:13,023 WARN L178 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2018-09-19 16:01:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:52,893 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2018-09-19 16:01:52,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:01:52,981 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2018-09-19 16:01:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:52,983 INFO L225 Difference]: With dead ends: 82 [2018-09-19 16:01:52,983 INFO L226 Difference]: Without dead ends: 76 [2018-09-19 16:01:52,986 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=103, Invalid=353, Unknown=6, NotChecked=0, Total=462 [2018-09-19 16:01:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-19 16:01:52,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2018-09-19 16:01:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-19 16:01:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2018-09-19 16:01:52,997 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 36 [2018-09-19 16:01:52,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:52,997 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2018-09-19 16:01:52,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 16:01:52,998 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2018-09-19 16:01:52,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-19 16:01:52,999 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:52,999 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:53,000 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1451358020, now seen corresponding path program 1 times [2018-09-19 16:01:53,000 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:53,000 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:01:53,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:53,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:53,320 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:01:53,328 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:01:53,329 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:53,336 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:53,357 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:01:53,358 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:01:53,404 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:01:53,411 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:01:53,412 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:53,419 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:53,430 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:01:53,431 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:01:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:01:53,616 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:53,630 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:53,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:01:53,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:01:53,631 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:01:53,632 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:01:53,632 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 8 states. [2018-09-19 16:02:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:12,572 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-09-19 16:02:12,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:02:12,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-09-19 16:02:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:12,577 INFO L225 Difference]: With dead ends: 85 [2018-09-19 16:02:12,577 INFO L226 Difference]: Without dead ends: 76 [2018-09-19 16:02:12,578 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:02:12,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-19 16:02:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2018-09-19 16:02:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-19 16:02:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2018-09-19 16:02:12,589 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 37 [2018-09-19 16:02:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:12,589 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2018-09-19 16:02:12,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:02:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2018-09-19 16:02:12,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-19 16:02:12,591 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:12,591 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:02:12,591 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:12,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1479987171, now seen corresponding path program 1 times [2018-09-19 16:02:12,592 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:12,592 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 16:02:12,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:12,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:14,811 INFO L303 Elim1Store]: Index analysis took 2032 ms [2018-09-19 16:02:14,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 26 [2018-09-19 16:02:18,900 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= ((_ to_fp 11 53) RNE (/ 306161699786838301793.0 10000000000000000000000000000000000000.0)) (select v_arrayElimArr_1 (_ bv0 32))) [2018-09-19 16:02:18,901 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:18,905 INFO L303 Elim1Store]: Index analysis took 4091 ms [2018-09-19 16:02:18,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 36 [2018-09-19 16:02:22,826 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= (select v_arrayElimArr_2 (_ bv1 32)) (select v_arrayElimArr_2 (_ bv0 32))) [2018-09-19 16:02:22,827 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:24,844 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= (select v_arrayElimArr_2 (_ bv1 32)) ((_ to_fp 11 53) RNE (/ 34758277578077496129.0 2500000000000000000000000000000000000.0))) [2018-09-19 16:02:24,845 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:26,850 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= ((_ to_fp 11 53) RNE (/ 34758277578077496129.0 2500000000000000000000000000000000000.0)) (select v_arrayElimArr_2 (_ bv0 32))) [2018-09-19 16:02:26,851 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:26,856 INFO L303 Elim1Store]: Index analysis took 7948 ms [2018-09-19 16:02:26,857 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 62 [2018-09-19 16:02:30,164 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= (select v_arrayElimArr_3 (_ bv1 32)) (select v_arrayElimArr_3 (_ bv0 32))) [2018-09-19 16:02:30,165 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:30,582 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:30,869 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:32,662 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:34,672 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= ((_ to_fp 11 53) RNE (/ 612323399573676603587.0 10000000000000000000000000000000000000.0)) (select v_arrayElimArr_3 (_ bv0 32))) [2018-09-19 16:02:34,673 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:35,685 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:35,689 INFO L303 Elim1Store]: Index analysis took 8830 ms [2018-09-19 16:02:35,691 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 101 [2018-09-19 16:02:35,692 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:45,555 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:50,520 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:56,553 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:05,016 INFO L303 Elim1Store]: Index analysis took 1520 ms [2018-09-19 16:03:05,017 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 26 [2018-09-19 16:03:05,676 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:05,679 INFO L303 Elim1Store]: Index analysis took 660 ms [2018-09-19 16:03:05,680 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 36 [2018-09-19 16:03:05,790 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:05,968 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:06,015 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:06,018 INFO L303 Elim1Store]: Index analysis took 335 ms [2018-09-19 16:03:06,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 62 [2018-09-19 16:03:06,074 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:06,094 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:06,110 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:06,134 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:06,152 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:06,172 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:06,174 INFO L303 Elim1Store]: Index analysis took 153 ms [2018-09-19 16:03:06,176 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 101 [2018-09-19 16:03:06,177 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:06,355 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:06,459 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:06,563 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:06,828 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:06,828 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:52, output treesize:62 [2018-09-19 16:03:07,089 WARN L178 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-09-19 16:03:07,876 WARN L178 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-09-19 16:03:07,939 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:07,948 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:07,955 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:07,961 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:07,967 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:07,973 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:07,978 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 53 [2018-09-19 16:03:07,979 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:08,197 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:08,198 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:08,200 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:08,202 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:08,208 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:08,210 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:08,212 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 53 [2018-09-19 16:03:08,213 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:08,266 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:08,267 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:16 [2018-09-19 16:03:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:03:08,408 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:08,422 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:08,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 16:03:08,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 16:03:08,424 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 16:03:08,424 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:03:08,424 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 6 states. [2018-09-19 16:03:15,943 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-09-19 16:03:16,315 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-09-19 16:03:21,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:21,058 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2018-09-19 16:03:21,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 16:03:21,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-09-19 16:03:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:21,065 INFO L225 Difference]: With dead ends: 82 [2018-09-19 16:03:21,065 INFO L226 Difference]: Without dead ends: 64 [2018-09-19 16:03:21,066 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:03:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-19 16:03:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2018-09-19 16:03:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-09-19 16:03:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2018-09-19 16:03:21,080 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 37 [2018-09-19 16:03:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:21,081 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2018-09-19 16:03:21,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 16:03:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2018-09-19 16:03:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-19 16:03:21,086 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:21,086 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:03:21,087 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash -339391493, now seen corresponding path program 1 times [2018-09-19 16:03:21,087 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:21,088 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:03:21,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:03:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:26,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:26,299 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:03:26,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:03:26,306 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:26,313 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:26,338 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:03:26,338 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:03:26,381 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:03:26,387 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:03:26,388 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:26,391 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:26,402 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:03:26,403 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:03:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:03:26,633 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:26,721 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:26,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:03:26,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:03:26,722 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:03:26,722 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:03:26,722 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 9 states. [2018-09-19 16:03:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:46,082 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2018-09-19 16:03:46,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:03:46,084 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2018-09-19 16:03:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:46,085 INFO L225 Difference]: With dead ends: 72 [2018-09-19 16:03:46,085 INFO L226 Difference]: Without dead ends: 62 [2018-09-19 16:03:46,086 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:03:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-19 16:03:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-09-19 16:03:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-09-19 16:03:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2018-09-19 16:03:46,097 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 58 [2018-09-19 16:03:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:46,098 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2018-09-19 16:03:46,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:03:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2018-09-19 16:03:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-19 16:03:46,099 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:46,099 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:03:46,100 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:46,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1148738119, now seen corresponding path program 1 times [2018-09-19 16:03:46,100 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:46,101 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 16:03:46,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:03:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:50,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:51,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:03:51,058 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:03:51,059 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:51,065 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:51,083 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:03:51,083 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:03:51,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:03:51,133 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:03:51,133 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:51,138 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:51,148 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:03:51,149 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:03:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:03:51,428 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:51,513 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:51,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:03:51,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:03:51,514 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:03:51,514 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:03:51,514 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 9 states. [2018-09-19 16:04:06,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:06,630 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2018-09-19 16:04:06,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:04:06,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2018-09-19 16:04:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:06,632 INFO L225 Difference]: With dead ends: 72 [2018-09-19 16:04:06,632 INFO L226 Difference]: Without dead ends: 61 [2018-09-19 16:04:06,633 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:04:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-19 16:04:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-19 16:04:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-19 16:04:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-09-19 16:04:06,646 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-09-19 16:04:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:06,646 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-09-19 16:04:06,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:04:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-09-19 16:04:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-19 16:04:06,648 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:06,648 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:04:06,648 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:06,648 INFO L82 PathProgramCache]: Analyzing trace with hash -856544517, now seen corresponding path program 1 times [2018-09-19 16:04:06,649 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:06,649 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:04:06,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:04:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:11,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:11,656 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:04:11,664 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:04:11,664 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:11,674 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:11,692 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:11,692 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:04:11,734 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:04:11,756 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:04:11,757 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:11,761 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:11,771 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:11,772 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:04:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:04:12,030 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:12,116 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:12,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:04:12,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:04:12,117 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:04:12,118 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:04:12,118 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 9 states. Received shutdown request... [2018-09-19 16:04:20,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:04:20,334 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 16:04:20,339 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 16:04:20,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:04:20 BoogieIcfgContainer [2018-09-19 16:04:20,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:04:20,340 INFO L168 Benchmark]: Toolchain (without parser) took 290211.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 873.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.5 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. [2018-09-19 16:04:20,341 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:04:20,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:04:20,342 INFO L168 Benchmark]: Boogie Preprocessor took 73.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:04:20,343 INFO L168 Benchmark]: RCFGBuilder took 20538.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -781.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:04:20,343 INFO L168 Benchmark]: TraceAbstraction took 269101.04 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 120.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -2.5 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:04:20,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 492.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 20538.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -781.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 269101.04 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 120.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -2.5 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was constructing difference of abstraction (61states) and FLOYD_HOARE automaton (currently 13 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (52 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 81 locations, 1 error locations. TIMEOUT Result, 269.0s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 188.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 558 SDtfs, 480 SDslu, 2426 SDs, 0 SdLazy, 781 SolverSat, 49 SolverUnsat, 51 SolverUnknown, 0 SolverNotchecked, 150.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 26.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 17.7s SatisfiabilityAnalysisTime, 61.7s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 351 ConstructedInterpolants, 129 QuantifiedInterpolants, 183846 SizeOfPredicates, 64 NumberOfNonLiveVariables, 951 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown