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_0662a_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:00:52,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:00:52,472 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:00:52,485 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:00:52,485 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:00:52,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:00:52,488 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:00:52,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:00:52,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:00:52,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:00:52,493 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:00:52,493 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:00:52,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:00:52,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:00:52,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:00:52,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:00:52,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:00:52,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:00:52,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:00:52,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:00:52,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:00:52,507 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:00:52,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:00:52,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:00:52,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:00:52,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:00:52,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:00:52,516 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:00:52,520 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:00:52,521 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:00:52,523 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:00:52,524 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:00:52,524 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:00:52,526 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:00:52,527 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:00:52,529 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:00:52,529 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 16:00:52,556 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:00:52,556 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:00:52,558 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:00:52,558 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:00:52,558 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:00:52,559 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:00:52,559 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:00:52,559 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:00:52,559 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:00:52,559 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:00:52,560 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:00:52,560 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:00:52,560 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:00:52,560 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:00:52,560 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:00:52,561 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:00:52,561 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:00:52,561 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:00:52,561 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:00:52,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:00:52,563 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:00:52,563 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:00:52,563 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:00:52,563 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:00:52,564 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:00:52,564 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:00:52,564 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:00:52,564 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:00:52,565 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:00:52,565 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:00:52,565 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:00:52,565 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:00:52,634 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:00:52,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:00:52,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:00:52,658 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:00:52,658 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:00:52,659 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0662a_true-unreach-call.c [2018-09-19 16:00:53,045 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04db4788f/5420e818a00542209bb3a202d1198f94/FLAGa826e69fb [2018-09-19 16:00:53,226 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:00:53,227 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0662a_true-unreach-call.c [2018-09-19 16:00:53,246 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04db4788f/5420e818a00542209bb3a202d1198f94/FLAGa826e69fb [2018-09-19 16:00:53,262 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04db4788f/5420e818a00542209bb3a202d1198f94 [2018-09-19 16:00:53,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:00:53,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:00:53,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:00:53,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:00:53,286 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:00:53,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58679c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53, skipping insertion in model container [2018-09-19 16:00:53,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,303 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:00:53,606 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:00:53,633 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:00:53,732 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:00:53,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53 WrapperNode [2018-09-19 16:00:53,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:00:53,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:00:53,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:00:53,792 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:00:53,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (1/1) ... [2018-09-19 16:00:53,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:00:53,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:00:53,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:00:53,866 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:00:53,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (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 16:00:54,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:00:54,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:00:54,034 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 16:00:54,034 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2018-09-19 16:00:54,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2018-09-19 16:00:54,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:00:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:00:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:00:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 16:00:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:00:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:00:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:00:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:00:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:00:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:00:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2018-09-19 16:00:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2018-09-19 16:00:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:00:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:00:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:00:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:00:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:00:54,484 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,512 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,526 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,590 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,609 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,638 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:56,767 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:56,795 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:56,852 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:57,855 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:57,869 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:57,892 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:13,970 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:13,988 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:14,015 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:14,023 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:17,367 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:01:17,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:01:17 BoogieIcfgContainer [2018-09-19 16:01:17,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:01:17,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:01:17,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:01:17,372 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:01:17,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:00:53" (1/3) ... [2018-09-19 16:01:17,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d24329c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:01:17, skipping insertion in model container [2018-09-19 16:01:17,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53" (2/3) ... [2018-09-19 16:01:17,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d24329c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:01:17, skipping insertion in model container [2018-09-19 16:01:17,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:01:17" (3/3) ... [2018-09-19 16:01:17,376 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662a_true-unreach-call.c [2018-09-19 16:01:17,386 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:01:17,397 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:01:17,448 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:01:17,449 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:01:17,449 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:01:17,450 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:01:17,450 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:01:17,450 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:01:17,450 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:01:17,450 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:01:17,450 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:01:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2018-09-19 16:01:17,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 16:01:17,485 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:17,486 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:17,488 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1279955196, now seen corresponding path program 1 times [2018-09-19 16:01:17,498 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:17,498 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) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:01:17,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:17,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:17,702 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 16:01:17,703 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:17,718 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:17,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:01:17,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:01:17,736 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:01:17,737 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:01:17,739 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 2 states. [2018-09-19 16:01:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:17,788 INFO L93 Difference]: Finished difference Result 349 states and 466 transitions. [2018-09-19 16:01:17,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:01:17,790 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-19 16:01:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:17,806 INFO L225 Difference]: With dead ends: 349 [2018-09-19 16:01:17,807 INFO L226 Difference]: Without dead ends: 174 [2018-09-19 16:01:17,813 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 16:01:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-09-19 16:01:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-09-19 16:01:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-19 16:01:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 213 transitions. [2018-09-19 16:01:17,880 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 213 transitions. Word has length 19 [2018-09-19 16:01:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:17,880 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 213 transitions. [2018-09-19 16:01:17,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:01:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 213 transitions. [2018-09-19 16:01:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-19 16:01:17,883 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:17,883 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] [2018-09-19 16:01:17,883 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:17,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1584750586, now seen corresponding path program 1 times [2018-09-19 16:01:17,885 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:17,885 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 16:01:17,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:18,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:18,694 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 16:01:18,704 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 16:01:18,705 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:18,771 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:18,897 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 16:01:18,898 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:01:19,202 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-19 16:01:19,227 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 16:01:19,241 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 16:01:19,242 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:19,267 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:19,297 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 16:01:19,297 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:01:19,804 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:01:19,975 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:19,976 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:19,977 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 27 treesize of output 35 [2018-09-19 16:01:20,021 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:20,046 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:01:20,047 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:20,115 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:20,194 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 16:01:20,194 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:43 [2018-09-19 16:01:20,551 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:01:20,898 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:20,898 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:20,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 54 treesize of output 56 [2018-09-19 16:01:20,917 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:20,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-19 16:01:20,946 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:21,014 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:21,111 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-09-19 16:01:21,111 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:78, output treesize:70 [2018-09-19 16:01:21,268 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 35 treesize of output 27 [2018-09-19 16:01:21,279 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:21,284 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-19 16:01:21,285 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:21,308 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:21,348 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 16:01:21,348 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:59, output treesize:33 [2018-09-19 16:01:22,343 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2018-09-19 16:01:22,385 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 16:01:22,385 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:22,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:22,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-19 16:01:22,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-19 16:01:22,406 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-19 16:01:22,406 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:01:22,407 INFO L87 Difference]: Start difference. First operand 174 states and 213 transitions. Second operand 16 states. [2018-09-19 16:01:23,702 WARN L178 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:01:24,291 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-19 16:01:25,004 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:01:25,624 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 16:01:26,137 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:01:26,560 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:01:26,976 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-19 16:01:27,392 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:01:27,858 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-19 16:01:28,658 WARN L178 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-09-19 16:01:31,400 WARN L178 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 55 [2018-09-19 16:01:32,833 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-09-19 16:01:33,265 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:01:33,622 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:01:37,277 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-19 16:02:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:15,935 INFO L93 Difference]: Finished difference Result 217 states and 265 transitions. [2018-09-19 16:02:15,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-19 16:02:15,939 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2018-09-19 16:02:15,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:15,943 INFO L225 Difference]: With dead ends: 217 [2018-09-19 16:02:15,943 INFO L226 Difference]: Without dead ends: 163 [2018-09-19 16:02:15,945 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=181, Invalid=810, Unknown=1, NotChecked=0, Total=992 [2018-09-19 16:02:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-19 16:02:15,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-19 16:02:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-19 16:02:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 191 transitions. [2018-09-19 16:02:15,977 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 191 transitions. Word has length 45 [2018-09-19 16:02:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:15,978 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 191 transitions. [2018-09-19 16:02:15,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-19 16:02:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 191 transitions. [2018-09-19 16:02:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:02:15,981 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:15,981 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] [2018-09-19 16:02:15,981 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:15,982 INFO L82 PathProgramCache]: Analyzing trace with hash 66485668, now seen corresponding path program 1 times [2018-09-19 16:02:15,983 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:15,983 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 16:02:15,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:16,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:16,170 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 16:02:16,177 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 16:02:16,177 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:16,183 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:16,203 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 16:02:16,203 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:02:16,250 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 16:02:16,256 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 16:02:16,257 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:16,264 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:16,276 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 16:02:16,277 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:02:16,858 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2018-09-19 16:02:16,999 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 16:02:17,000 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:17,011 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:17,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:02:17,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:02:17,013 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:02:17,013 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:02:17,013 INFO L87 Difference]: Start difference. First operand 163 states and 191 transitions. Second operand 10 states. [2018-09-19 16:02:17,792 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:02:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:26,907 INFO L93 Difference]: Finished difference Result 217 states and 259 transitions. [2018-09-19 16:02:26,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:02:26,908 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-09-19 16:02:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:26,911 INFO L225 Difference]: With dead ends: 217 [2018-09-19 16:02:26,911 INFO L226 Difference]: Without dead ends: 161 [2018-09-19 16:02:26,913 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2018-09-19 16:02:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-09-19 16:02:26,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-09-19 16:02:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-09-19 16:02:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2018-09-19 16:02:26,931 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 50 [2018-09-19 16:02:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:26,931 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2018-09-19 16:02:26,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:02:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2018-09-19 16:02:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:02:26,933 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:26,934 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] [2018-09-19 16:02:26,934 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash -52671134, now seen corresponding path program 1 times [2018-09-19 16:02:26,935 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:26,935 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 16:02:26,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:27,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:27,636 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:02:28,201 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:02:28,727 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:02:29,616 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:02:29,629 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 16:02:29,630 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:29,650 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:29,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:02:29,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:02:29,651 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:02:29,651 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:02:29,651 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 7 states. [2018-09-19 16:02:40,856 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:02:46,552 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:02:51,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:51,358 INFO L93 Difference]: Finished difference Result 168 states and 191 transitions. [2018-09-19 16:02:51,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:02:51,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2018-09-19 16:02:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:51,363 INFO L225 Difference]: With dead ends: 168 [2018-09-19 16:02:51,363 INFO L226 Difference]: Without dead ends: 161 [2018-09-19 16:02:51,363 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:02:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-09-19 16:02:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-09-19 16:02:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-09-19 16:02:51,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 184 transitions. [2018-09-19 16:02:51,384 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 184 transitions. Word has length 50 [2018-09-19 16:02:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:51,384 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 184 transitions. [2018-09-19 16:02:51,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:02:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 184 transitions. [2018-09-19 16:02:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:02:51,386 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:51,387 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] [2018-09-19 16:02:51,387 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:51,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1722336228, now seen corresponding path program 1 times [2018-09-19 16:02:51,388 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:51,388 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) [2018-09-19 16:02:51,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:02:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:51,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:51,655 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 16:02:51,662 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 16:02:51,662 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:51,687 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:51,706 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 16:02:51,706 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:02:51,757 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 16:02:51,764 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 16:02:51,765 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:51,768 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:51,802 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 16:02:51,803 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:02:52,079 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 16:02:52,080 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:52,092 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:52,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:02:52,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:02:52,093 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:02:52,094 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:02:52,094 INFO L87 Difference]: Start difference. First operand 161 states and 184 transitions. Second operand 8 states. [2018-09-19 16:02:52,705 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:02:54,292 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-19 16:02:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:57,983 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2018-09-19 16:02:57,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:02:57,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2018-09-19 16:02:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:57,987 INFO L225 Difference]: With dead ends: 168 [2018-09-19 16:02:57,987 INFO L226 Difference]: Without dead ends: 159 [2018-09-19 16:02:57,988 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:02:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-19 16:02:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-19 16:02:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-19 16:02:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 180 transitions. [2018-09-19 16:02:58,004 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 180 transitions. Word has length 50 [2018-09-19 16:02:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:58,005 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 180 transitions. [2018-09-19 16:02:58,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:02:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 180 transitions. [2018-09-19 16:02:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:02:58,006 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:58,007 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] [2018-09-19 16:02:58,007 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:58,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1027688655, now seen corresponding path program 1 times [2018-09-19 16:02:58,008 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:58,008 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 16:02:58,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:58,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:58,336 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 16:02:58,346 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 16:02:58,346 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:58,390 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:58,448 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 16:02:58,448 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:02:58,651 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 16:02:58,666 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 16:02:58,666 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:58,733 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:58,974 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 16:02:58,974 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:02:59,121 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:02:59,317 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 16:02:59,325 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 16:02:59,325 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:59,335 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:59,375 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 16:02:59,376 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2018-09-19 16:02:59,505 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 16:02:59,513 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 16:02:59,513 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:59,546 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:59,577 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 16:02:59,578 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:42, output treesize:27 [2018-09-19 16:03:00,579 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-09-19 16:03:01,363 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 97 [2018-09-19 16:03:01,817 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2018-09-19 16:03:02,537 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 16:03:02,537 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:02,549 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:02,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-19 16:03:02,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-19 16:03:02,550 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-19 16:03:02,550 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:03:02,550 INFO L87 Difference]: Start difference. First operand 159 states and 180 transitions. Second operand 17 states. [2018-09-19 16:03:03,097 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:03:03,952 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-19 16:03:05,204 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 16:03:05,742 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:03:06,157 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:03:06,645 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:03:07,185 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:03:08,408 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-09-19 16:03:09,178 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:03:10,437 WARN L178 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-09-19 16:03:12,110 WARN L178 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2018-09-19 16:03:13,880 WARN L178 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 147 DAG size of output: 145 [2018-09-19 16:03:17,131 WARN L178 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 148 DAG size of output: 141 [2018-09-19 16:03:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:24,224 INFO L93 Difference]: Finished difference Result 165 states and 185 transitions. [2018-09-19 16:03:24,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-19 16:03:24,226 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2018-09-19 16:03:24,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:24,227 INFO L225 Difference]: With dead ends: 165 [2018-09-19 16:03:24,228 INFO L226 Difference]: Without dead ends: 159 [2018-09-19 16:03:24,229 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2018-09-19 16:03:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-19 16:03:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-19 16:03:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-19 16:03:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 179 transitions. [2018-09-19 16:03:24,246 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 179 transitions. Word has length 51 [2018-09-19 16:03:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:24,247 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 179 transitions. [2018-09-19 16:03:24,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-19 16:03:24,247 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 179 transitions. [2018-09-19 16:03:24,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:03:24,248 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:24,248 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] [2018-09-19 16:03:24,249 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:24,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1152896066, now seen corresponding path program 1 times [2018-09-19 16:03:24,249 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:24,249 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 16:03:24,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:03:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:24,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:24,590 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:03:24,591 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:03:24,592 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 27 treesize of output 35 [2018-09-19 16:03:24,610 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:24,631 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:03:24,632 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:24,658 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:24,683 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 16:03:24,684 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:03:24,855 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:03:24,856 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:03:24,858 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 54 treesize of output 56 [2018-09-19 16:03:24,872 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:24,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-19 16:03:24,896 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:24,934 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:24,983 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 16:03:24,983 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:03:25,052 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 35 treesize of output 27 [2018-09-19 16:03:25,060 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:03:25,065 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-19 16:03:25,066 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:25,079 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:25,096 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 16:03:25,096 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:03:25,428 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 16:03:25,429 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:25,443 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:25,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:03:25,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:03:25,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:03:25,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:03:25,445 INFO L87 Difference]: Start difference. First operand 159 states and 179 transitions. Second operand 11 states. [2018-09-19 16:03:25,994 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:03:27,526 WARN L178 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:03:30,156 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:03:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:37,707 INFO L93 Difference]: Finished difference Result 206 states and 234 transitions. [2018-09-19 16:03:37,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:03:37,708 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2018-09-19 16:03:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:37,710 INFO L225 Difference]: With dead ends: 206 [2018-09-19 16:03:37,710 INFO L226 Difference]: Without dead ends: 153 [2018-09-19 16:03:37,711 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:03:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-19 16:03:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-09-19 16:03:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-09-19 16:03:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2018-09-19 16:03:37,734 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 52 [2018-09-19 16:03:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:37,735 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2018-09-19 16:03:37,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:03:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2018-09-19 16:03:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:03:37,736 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:37,736 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] [2018-09-19 16:03:37,737 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1711064758, now seen corresponding path program 1 times [2018-09-19 16:03:37,737 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:37,739 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 16:03:37,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:03:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:38,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:39,084 WARN L178 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:39,383 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:40,047 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:03:41,113 WARN L178 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:03:41,121 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 16:03:41,121 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:41,134 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:41,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:03:41,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:03:41,135 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:03:41,135 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:03:41,136 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand 7 states. [2018-09-19 16:04:00,666 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:04:02,162 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:04:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:05,858 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2018-09-19 16:04:05,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:04:05,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2018-09-19 16:04:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:05,861 INFO L225 Difference]: With dead ends: 159 [2018-09-19 16:04:05,861 INFO L226 Difference]: Without dead ends: 151 [2018-09-19 16:04:05,862 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:04:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-19 16:04:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-19 16:04:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-19 16:04:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 168 transitions. [2018-09-19 16:04:05,878 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 168 transitions. Word has length 52 [2018-09-19 16:04:05,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:05,878 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 168 transitions. [2018-09-19 16:04:05,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:04:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 168 transitions. [2018-09-19 16:04:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-19 16:04:05,880 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:05,880 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] [2018-09-19 16:04:05,881 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:05,881 INFO L82 PathProgramCache]: Analyzing trace with hash 450754314, now seen corresponding path program 1 times [2018-09-19 16:04:05,881 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:05,882 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) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:04:05,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:06,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:06,309 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 16:04:06,328 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 16:04:06,330 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:06,337 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:06,354 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 16:04:06,355 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:04:06,411 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 16:04:06,423 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 16:04:06,424 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:06,449 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:06,530 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 16:04:06,531 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:04:07,287 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2018-09-19 16:04:07,410 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 16:04:07,410 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:07,425 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:07,426 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:04:07,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:04:07,427 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:04:07,427 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:04:07,428 INFO L87 Difference]: Start difference. First operand 151 states and 168 transitions. Second operand 10 states. [2018-09-19 16:04:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:15,921 INFO L93 Difference]: Finished difference Result 157 states and 173 transitions. [2018-09-19 16:04:15,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:04:15,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2018-09-19 16:04:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:15,924 INFO L225 Difference]: With dead ends: 157 [2018-09-19 16:04:15,924 INFO L226 Difference]: Without dead ends: 128 [2018-09-19 16:04:15,925 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-19 16:04:15,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-19 16:04:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-19 16:04:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-19 16:04:15,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2018-09-19 16:04:15,939 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 53 [2018-09-19 16:04:15,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:15,940 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2018-09-19 16:04:15,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:04:15,940 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2018-09-19 16:04:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-19 16:04:15,941 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:15,941 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] [2018-09-19 16:04:15,941 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash -233480410, now seen corresponding path program 1 times [2018-09-19 16:04:15,942 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:15,942 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-19 16:04:15,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:16,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:16,644 INFO L303 Elim1Store]: Index analysis took 112 ms [2018-09-19 16:04:16,645 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 16:04:16,653 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 16:04:16,654 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:16,696 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:16,776 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 16:04:16,777 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:04:17,182 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-19 16:04:17,228 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 16:04:17,254 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 16:04:17,254 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:17,261 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:17,292 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 16:04:17,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:04:17,536 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 16:04:17,555 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 16:04:17,556 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:17,584 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:17,627 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 16:04:17,627 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2018-09-19 16:04:17,760 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 16:04:17,787 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 16:04:17,787 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:17,812 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:17,843 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 16:04:17,843 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:42, output treesize:27 [2018-09-19 16:04:19,562 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-09-19 16:04:20,231 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2018-09-19 16:04:20,924 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-09-19 16:04:21,801 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-09-19 16:04:21,859 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 16:04:21,859 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:21,881 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:21,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-09-19 16:04:21,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-19 16:04:21,882 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-19 16:04:21,882 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2018-09-19 16:04:21,883 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand 19 states. [2018-09-19 16:04:23,544 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-19 16:04:24,776 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 16:04:25,613 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:04:26,019 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:04:28,205 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:04:28,866 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-09-19 16:04:29,955 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-09-19 16:04:31,485 WARN L178 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-09-19 16:04:34,252 WARN L178 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2018-09-19 16:04:37,087 WARN L178 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 181 DAG size of output: 173 [2018-09-19 16:04:42,070 WARN L178 SmtUtils]: Spent 3.38 s on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2018-09-19 16:04:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:52,949 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2018-09-19 16:04:52,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-19 16:04:52,951 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2018-09-19 16:04:52,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:52,952 INFO L225 Difference]: With dead ends: 134 [2018-09-19 16:04:52,952 INFO L226 Difference]: Without dead ends: 128 [2018-09-19 16:04:52,952 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=223, Invalid=1109, Unknown=0, NotChecked=0, Total=1332 [2018-09-19 16:04:52,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-19 16:04:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-19 16:04:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-19 16:04:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2018-09-19 16:04:52,966 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 55 [2018-09-19 16:04:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:52,967 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2018-09-19 16:04:52,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-19 16:04:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2018-09-19 16:04:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-19 16:04:52,968 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:52,968 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] [2018-09-19 16:04:52,968 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:52,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1992128403, now seen corresponding path program 1 times [2018-09-19 16:04:52,969 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:52,969 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-19 16:04:52,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:53,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:53,540 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:04:53,540 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:04:53,541 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 27 treesize of output 35 [2018-09-19 16:04:53,551 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:53,571 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:04:53,571 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:53,589 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:53,612 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 16:04:53,613 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:04:53,769 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 42 treesize of output 33 [2018-09-19 16:04:53,777 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:53,789 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2018-09-19 16:04:53,789 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:53,810 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:53,836 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 16:04:53,837 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:32 [2018-09-19 16:04:55,917 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:04:55,925 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 26 treesize of output 20 [2018-09-19 16:04:55,930 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:55,935 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 11 [2018-09-19 16:04:55,936 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:55,953 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:55,968 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:55,969 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:39, output treesize:18 [2018-09-19 16:04:56,366 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 16:04:56,367 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:56,389 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:56,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 16:04:56,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 16:04:56,390 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 16:04:56,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:04:56,391 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand 12 states. [2018-09-19 16:04:57,551 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:05:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:05:01,939 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2018-09-19 16:05:01,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:05:01,941 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2018-09-19 16:05:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:05:01,942 INFO L225 Difference]: With dead ends: 128 [2018-09-19 16:05:01,942 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:05:01,943 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2018-09-19 16:05:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:05:01,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:05:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:05:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:05:01,943 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2018-09-19 16:05:01,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:05:01,944 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:05:01,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 16:05:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:05:01,944 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:05:01,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:05:19,962 WARN L178 SmtUtils]: Spent 17.48 s on a formula simplification. DAG size of input: 204 DAG size of output: 160 Received shutdown request... [2018-09-19 16:05:32,168 WARN L186 SmtUtils]: Removed 22 from assertion stack [2018-09-19 16:05:32,168 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-19 16:05:32,169 INFO L168 Benchmark]: Toolchain (without parser) took 278894.81 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 862.5 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -307.7 MB). Peak memory consumption was 554.8 MB. Max. memory is 7.1 GB. [2018-09-19 16:05:32,170 INFO L168 Benchmark]: CDTParser took 0.24 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 16:05:32,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 512.69 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-19 16:05:32,171 INFO L168 Benchmark]: Boogie Preprocessor took 73.55 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 16:05:32,171 INFO L168 Benchmark]: RCFGBuilder took 23502.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -751.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:05:32,172 INFO L168 Benchmark]: TraceAbstraction took 254799.85 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 121.1 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 422.5 MB). Peak memory consumption was 543.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:05:32,174 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 512.69 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.55 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 23502.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -751.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254799.85 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 121.1 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 422.5 MB). Peak memory consumption was 543.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 260]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 251. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown