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_0661b_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:00:51,954 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:00:51,956 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:00:51,969 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:00:51,969 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:00:51,970 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:00:51,972 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:00:51,974 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:00:51,975 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:00:51,976 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:00:51,977 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:00:51,977 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:00:51,978 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:00:51,979 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:00:51,982 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:00:51,984 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:00:51,985 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:00:51,987 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:00:51,991 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:00:51,995 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:00:51,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:00:52,000 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:00:52,006 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:00:52,007 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:00:52,007 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:00:52,008 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:00:52,009 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:00:52,009 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:00:52,010 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:00:52,012 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:00:52,012 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:00:52,014 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:00:52,015 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:00:52,016 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:00:52,017 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:00:52,017 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:00:52,019 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 16:00:52,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:00:52,047 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:00:52,048 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:00:52,048 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:00:52,049 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:00:52,049 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:00:52,049 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:00:52,050 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:00:52,050 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:00:52,050 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:00:52,050 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:00:52,051 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:00:52,051 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:00:52,051 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:00:52,051 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:00:52,051 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:00:52,052 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:00:52,053 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:00:52,053 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:00:52,053 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:00:52,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:00:52,054 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:00:52,054 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:00:52,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:00:52,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:00:52,054 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:00:52,055 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:00:52,055 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:00:52,055 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:00:52,055 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:00:52,056 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:00:52,056 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:00:52,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:00:52,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:00:52,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:00:52,130 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:00:52,130 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:00:52,131 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661b_true-unreach-call.c [2018-09-19 16:00:52,489 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ffd34a24/bd2f6a0099eb4bf7b6aae1510c2a7c74/FLAG46bc0c3fb [2018-09-19 16:00:52,703 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:00:52,704 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0661b_true-unreach-call.c [2018-09-19 16:00:52,724 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ffd34a24/bd2f6a0099eb4bf7b6aae1510c2a7c74/FLAG46bc0c3fb [2018-09-19 16:00:52,744 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ffd34a24/bd2f6a0099eb4bf7b6aae1510c2a7c74 [2018-09-19 16:00:52,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:00:52,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:00:52,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:00:52,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:00:52,774 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:00:52,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:00:52" (1/1) ... [2018-09-19 16:00:52,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4092df14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:52, skipping insertion in model container [2018-09-19 16:00:52,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:00:52" (1/1) ... [2018-09-19 16:00:52,792 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:00:53,160 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:00:53,188 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:00:53,268 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:00:53,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:00:53 WrapperNode [2018-09-19 16:00:53,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:00:53,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:00:53,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:00:53,333 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:00:53,353 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 16:00:53,353 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 16:00:53,372 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 16:00:53,373 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 16:00:53,391 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 16:00:53,402 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 16:00:53,407 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 16:00:53,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:00:53,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:00:53,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:00:53,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:00:53,428 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 16:00:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:00:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:00:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 16:00:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2018-09-19 16:00:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2018-09-19 16:00:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-19 16:00:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:00:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:00:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:00:53,586 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 16:00:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:00:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:00:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:00:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:00:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:00:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:00:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2018-09-19 16:00:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2018-09-19 16:00:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-19 16:00:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:00:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:00:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:00:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:00:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:00:53,877 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:53,911 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,063 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,714 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,727 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,757 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,837 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,848 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:54,866 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:56,995 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:57,036 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:57,178 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:57,190 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:57,202 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:16,324 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:16,346 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:16,403 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:16,416 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:16,436 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:01:16,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:01:16 BoogieIcfgContainer [2018-09-19 16:01:16,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:01:16,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:01:16,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:01:16,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:01:16,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:00:52" (1/3) ... [2018-09-19 16:01:16,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673defe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:01:16, skipping insertion in model container [2018-09-19 16:01:16,443 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 16:01:16,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673defe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:01:16, skipping insertion in model container [2018-09-19 16:01:16,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:01:16" (3/3) ... [2018-09-19 16:01:16,445 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b_true-unreach-call.c [2018-09-19 16:01:16,455 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:01:16,464 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:01:16,512 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:01:16,513 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:01:16,513 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:01:16,513 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:01:16,513 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:01:16,514 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:01:16,514 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:01:16,514 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:01:16,515 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:01:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2018-09-19 16:01:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 16:01:16,550 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:16,552 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] [2018-09-19 16:01:16,554 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:16,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1502178536, now seen corresponding path program 1 times [2018-09-19 16:01:16,566 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:16,566 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 16:01:16,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:16,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:16,775 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 16:01:16,775 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:16,791 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:16,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:01:16,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:01:16,808 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:01:16,808 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:01:16,811 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 2 states. [2018-09-19 16:01:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:16,862 INFO L93 Difference]: Finished difference Result 383 states and 507 transitions. [2018-09-19 16:01:16,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:01:16,864 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-09-19 16:01:16,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:16,878 INFO L225 Difference]: With dead ends: 383 [2018-09-19 16:01:16,878 INFO L226 Difference]: Without dead ends: 191 [2018-09-19 16:01:16,884 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 16:01:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-19 16:01:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-19 16:01:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-19 16:01:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 231 transitions. [2018-09-19 16:01:16,944 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 231 transitions. Word has length 20 [2018-09-19 16:01:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:16,944 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 231 transitions. [2018-09-19 16:01:16,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:01:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 231 transitions. [2018-09-19 16:01:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-19 16:01:16,950 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:16,951 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] [2018-09-19 16:01:16,952 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:16,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1611779378, now seen corresponding path program 1 times [2018-09-19 16:01:16,955 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:16,956 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 16:01:16,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:17,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:17,651 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:17,665 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:17,666 INFO L303 Elim1Store]: Index analysis took 232 ms [2018-09-19 16:01:17,673 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 16:01:17,751 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:17,820 INFO L303 Elim1Store]: Index analysis took 142 ms [2018-09-19 16:01:17,822 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 16:01:17,823 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:17,948 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:17,999 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 16:01:18,000 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:31 [2018-09-19 16:01:18,370 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:01:18,539 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 16:01:18,598 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:18,669 INFO L303 Elim1Store]: Index analysis took 127 ms [2018-09-19 16:01:18,671 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 16:01:18,672 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:18,889 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:19,056 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 16:01:19,056 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:35 [2018-09-19 16:01:21,243 WARN L178 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 30 [2018-09-19 16:01:21,284 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 16:01:21,320 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:21,326 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 16:01:21,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:21,361 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:21,423 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 16:01:21,424 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:42, output treesize:21 [2018-09-19 16:01:21,880 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 16:01:21,891 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 16:01:21,892 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:21,900 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:21,955 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 16:01:21,956 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2018-09-19 16:01:22,118 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 16:01:22,134 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 16:01:22,134 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:22,142 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:22,182 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 16:01:22,183 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:33 [2018-09-19 16:01:23,228 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 16:01:23,228 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:23,245 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:23,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-19 16:01:23,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-19 16:01:23,248 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-19 16:01:23,250 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:01:23,250 INFO L87 Difference]: Start difference. First operand 191 states and 231 transitions. Second operand 17 states. [2018-09-19 16:01:23,770 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:01:24,443 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:01:25,409 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:01:27,186 WARN L178 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:01:27,839 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:01:28,380 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:01:28,809 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:01:29,297 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:01:29,991 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-09-19 16:01:30,767 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:01:31,546 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:01:32,042 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:01:33,938 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-19 16:01:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:55,306 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2018-09-19 16:01:55,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-19 16:01:55,309 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2018-09-19 16:01:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:55,317 INFO L225 Difference]: With dead ends: 249 [2018-09-19 16:01:55,317 INFO L226 Difference]: Without dead ends: 184 [2018-09-19 16:01:55,319 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2018-09-19 16:01:55,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-09-19 16:01:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-09-19 16:01:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-19 16:01:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 216 transitions. [2018-09-19 16:01:55,349 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 216 transitions. Word has length 46 [2018-09-19 16:01:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:55,350 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 216 transitions. [2018-09-19 16:01:55,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-19 16:01:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 216 transitions. [2018-09-19 16:01:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:01:55,352 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:55,352 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 16:01:55,353 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash 27978668, now seen corresponding path program 1 times [2018-09-19 16:01:55,353 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:55,354 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 16:01:55,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:55,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:55,595 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 16:01:55,596 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:55,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:55,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:01:55,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:01:55,608 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:01:55,608 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:01:55,609 INFO L87 Difference]: Start difference. First operand 184 states and 216 transitions. Second operand 7 states. [2018-09-19 16:02:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:01,180 INFO L93 Difference]: Finished difference Result 191 states and 223 transitions. [2018-09-19 16:02:01,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:02:01,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-09-19 16:02:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:01,184 INFO L225 Difference]: With dead ends: 191 [2018-09-19 16:02:01,184 INFO L226 Difference]: Without dead ends: 188 [2018-09-19 16:02:01,185 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:02:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-19 16:02:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-09-19 16:02:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-09-19 16:02:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 220 transitions. [2018-09-19 16:02:01,206 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 220 transitions. Word has length 51 [2018-09-19 16:02:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:01,206 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 220 transitions. [2018-09-19 16:02:01,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:02:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 220 transitions. [2018-09-19 16:02:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:02:01,209 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:01,209 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 16:02:01,209 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:01,209 INFO L82 PathProgramCache]: Analyzing trace with hash 629085102, now seen corresponding path program 1 times [2018-09-19 16:02:01,210 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:01,210 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 16:02:01,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:01,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:01,552 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 16:02:01,571 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 16:02:01,571 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:01,577 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:01,595 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 16:02:01,595 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:02:01,654 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 16:02:01,668 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 16:02:01,669 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:01,672 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:01,684 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 16:02:01,685 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:02:01,858 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 16:02:01,859 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:01,876 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:01,876 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:02:01,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:02:01,877 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:02:01,877 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:02:01,877 INFO L87 Difference]: Start difference. First operand 188 states and 220 transitions. Second operand 8 states. [2018-09-19 16:02:02,491 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:02:11,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:11,370 INFO L93 Difference]: Finished difference Result 212 states and 244 transitions. [2018-09-19 16:02:11,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:02:11,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2018-09-19 16:02:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:11,374 INFO L225 Difference]: With dead ends: 212 [2018-09-19 16:02:11,374 INFO L226 Difference]: Without dead ends: 188 [2018-09-19 16:02:11,375 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:02:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-19 16:02:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-09-19 16:02:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-09-19 16:02:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 219 transitions. [2018-09-19 16:02:11,402 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 219 transitions. Word has length 51 [2018-09-19 16:02:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:11,403 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 219 transitions. [2018-09-19 16:02:11,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:02:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 219 transitions. [2018-09-19 16:02:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:02:11,405 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:11,405 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 16:02:11,405 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash -180261524, now seen corresponding path program 1 times [2018-09-19 16:02:11,406 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:11,406 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:02:11,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:11,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:11,691 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:02:11,692 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:02:11,694 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 16:02:11,703 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:11,721 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 16:02:11,722 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:11,744 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:11,770 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 16:02:11,771 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:02:11,967 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:02:11,968 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:02:11,969 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 16:02:11,979 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:12,004 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 16:02:12,004 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:12,054 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:12,097 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 16:02:12,098 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:02:12,192 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 16:02:12,203 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:12,207 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 16:02:12,208 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:12,221 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:12,241 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 16:02:12,241 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:02:12,552 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 16:02:12,553 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:12,565 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:12,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:02:12,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:02:12,566 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:02:12,566 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:02:12,567 INFO L87 Difference]: Start difference. First operand 188 states and 219 transitions. Second operand 11 states. [2018-09-19 16:02:14,211 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-19 16:02:14,398 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:02:14,717 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:02:14,996 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:02:15,720 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-19 16:02:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:27,456 INFO L93 Difference]: Finished difference Result 256 states and 301 transitions. [2018-09-19 16:02:27,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:02:27,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2018-09-19 16:02:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:27,463 INFO L225 Difference]: With dead ends: 256 [2018-09-19 16:02:27,463 INFO L226 Difference]: Without dead ends: 188 [2018-09-19 16:02:27,464 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:02:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-19 16:02:27,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-09-19 16:02:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-09-19 16:02:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2018-09-19 16:02:27,478 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 51 [2018-09-19 16:02:27,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:27,479 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2018-09-19 16:02:27,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:02:27,479 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2018-09-19 16:02:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:02:27,481 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:27,481 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 16:02:27,481 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:27,481 INFO L82 PathProgramCache]: Analyzing trace with hash 5836829, now seen corresponding path program 1 times [2018-09-19 16:02:27,482 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:27,482 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 16:02:27,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:27,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:27,886 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 16:02:27,895 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 16:02:27,895 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:27,969 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:27,997 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 16:02:27,998 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:02:28,114 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 16:02:28,133 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:02:28,134 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:28,184 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:28,284 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 16:02:28,284 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:02:28,529 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 16:02:28,538 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 16:02:28,538 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:28,547 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:28,590 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 16:02:28,591 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2018-09-19 16:02:28,710 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 16:02:28,720 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 16:02:28,721 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:28,730 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:28,761 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 16:02:28,761 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:42, output treesize:27 [2018-09-19 16:02:29,584 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-09-19 16:02:30,087 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-09-19 16:02:30,261 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 16:02:30,261 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:30,273 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:30,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-19 16:02:30,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-19 16:02:30,274 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-19 16:02:30,275 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:02:30,275 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand 15 states. [2018-09-19 16:02:30,727 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:02:31,136 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:02:35,123 WARN L178 SmtUtils]: Spent 3.35 s on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:02:36,246 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:02:36,545 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:02:36,903 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:02:38,083 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-09-19 16:02:38,744 WARN L178 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-09-19 16:02:40,910 WARN L178 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2018-09-19 16:02:41,816 WARN L178 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2018-09-19 16:02:42,780 WARN L178 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-09-19 16:02:45,530 WARN L178 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2018-09-19 16:02:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:59,351 INFO L93 Difference]: Finished difference Result 212 states and 242 transitions. [2018-09-19 16:02:59,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-19 16:02:59,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2018-09-19 16:02:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:59,356 INFO L225 Difference]: With dead ends: 212 [2018-09-19 16:02:59,356 INFO L226 Difference]: Without dead ends: 141 [2018-09-19 16:02:59,358 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2018-09-19 16:02:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-19 16:02:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2018-09-19 16:02:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-09-19 16:02:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2018-09-19 16:02:59,367 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 52 [2018-09-19 16:02:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:59,368 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2018-09-19 16:02:59,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-19 16:02:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2018-09-19 16:02:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-19 16:02:59,369 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:59,370 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:02:59,370 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:59,370 INFO L82 PathProgramCache]: Analyzing trace with hash -907264906, now seen corresponding path program 1 times [2018-09-19 16:02:59,371 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:59,371 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 16:02:59,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:59,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:59,839 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 16:02:59,839 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:59,852 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:59,852 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:02:59,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:02:59,853 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:02:59,853 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:02:59,853 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand 10 states. [2018-09-19 16:03:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:26,350 INFO L93 Difference]: Finished difference Result 153 states and 166 transitions. [2018-09-19 16:03:26,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:03:26,759 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2018-09-19 16:03:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:26,762 INFO L225 Difference]: With dead ends: 153 [2018-09-19 16:03:26,762 INFO L226 Difference]: Without dead ends: 150 [2018-09-19 16:03:26,763 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:03:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-09-19 16:03:26,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2018-09-19 16:03:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-19 16:03:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 156 transitions. [2018-09-19 16:03:26,770 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 156 transitions. Word has length 67 [2018-09-19 16:03:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:26,771 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 156 transitions. [2018-09-19 16:03:26,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:03:26,771 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2018-09-19 16:03:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-19 16:03:26,772 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:26,773 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:03:26,773 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1933263866, now seen corresponding path program 1 times [2018-09-19 16:03:26,773 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:26,774 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 16:03:26,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:03:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:26,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:27,080 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:03:27,087 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:03:27,087 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:27,093 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:27,112 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 16:03:27,113 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:03:27,220 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:03:27,238 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:03:27,238 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:27,265 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:27,345 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 16:03:27,346 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:03:27,706 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 16:03:27,706 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:27,718 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:27,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:03:27,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:03:27,722 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:03:27,722 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:03:27,722 INFO L87 Difference]: Start difference. First operand 143 states and 156 transitions. Second operand 14 states. [2018-09-19 16:03:28,366 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-19 16:03:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:30,146 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2018-09-19 16:03:30,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:03:30,147 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2018-09-19 16:03:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:30,149 INFO L225 Difference]: With dead ends: 152 [2018-09-19 16:03:30,149 INFO L226 Difference]: Without dead ends: 139 [2018-09-19 16:03:30,150 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2018-09-19 16:03:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-19 16:03:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-19 16:03:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-19 16:03:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2018-09-19 16:03:30,159 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 67 [2018-09-19 16:03:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:30,159 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2018-09-19 16:03:30,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:03:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2018-09-19 16:03:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-19 16:03:30,161 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:30,161 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:03:30,161 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:30,161 INFO L82 PathProgramCache]: Analyzing trace with hash -550033036, now seen corresponding path program 1 times [2018-09-19 16:03:30,162 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:30,162 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 16:03:30,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:03:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:34,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:34,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:03:34,603 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:03:34,604 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:34,609 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:34,629 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 16:03:34,630 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:03:34,678 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:03:34,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:03:34,685 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:34,688 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:34,698 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 16:03:34,698 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:03:35,065 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 16:03:35,066 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:35,150 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:35,150 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:03:35,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:03:35,152 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:03:35,152 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:03:35,153 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 11 states. [2018-09-19 16:04:08,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:08,389 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2018-09-19 16:04:08,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:04:08,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2018-09-19 16:04:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:08,859 INFO L225 Difference]: With dead ends: 174 [2018-09-19 16:04:08,859 INFO L226 Difference]: Without dead ends: 128 [2018-09-19 16:04:08,860 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:04:08,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-19 16:04:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2018-09-19 16:04:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-19 16:04:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2018-09-19 16:04:08,867 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 69 [2018-09-19 16:04:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:08,868 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2018-09-19 16:04:08,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:04:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2018-09-19 16:04:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-19 16:04:08,869 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:08,869 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:04:08,869 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:08,869 INFO L82 PathProgramCache]: Analyzing trace with hash 964772392, now seen corresponding path program 1 times [2018-09-19 16:04:08,870 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:08,870 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 16:04:08,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:13,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:13,447 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-19 16:04:18,348 WARN L178 SmtUtils]: Spent 2.49 s on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:04:24,606 WARN L178 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:04:24,620 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 16:04:24,621 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:24,689 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:24,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:04:24,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:04:24,689 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:04:24,689 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:04:24,690 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand 8 states. [2018-09-19 16:04:45,193 WARN L178 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:05:02,898 WARN L178 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:05:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:05:13,368 INFO L93 Difference]: Finished difference Result 157 states and 165 transitions. [2018-09-19 16:05:13,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:05:13,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2018-09-19 16:05:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:05:13,369 INFO L225 Difference]: With dead ends: 157 [2018-09-19 16:05:13,370 INFO L226 Difference]: Without dead ends: 126 [2018-09-19 16:05:13,370 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:05:13,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-09-19 16:05:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-09-19 16:05:13,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-09-19 16:05:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2018-09-19 16:05:13,379 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 70 [2018-09-19 16:05:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:05:13,380 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2018-09-19 16:05:13,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:05:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2018-09-19 16:05:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-19 16:05:13,381 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:05:13,381 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:05:13,381 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:05:13,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1424343236, now seen corresponding path program 1 times [2018-09-19 16:05:13,382 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:05:13,382 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 16:05:13,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:05:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:05:13,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:05:13,923 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 16:05:13,930 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 16:05:13,931 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:13,967 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:13,998 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 16:05:13,999 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:05:14,103 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 16:05:14,107 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 16:05:14,108 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:14,112 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:14,124 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 16:05:14,124 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:05:14,712 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 16:05:14,713 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:05:14,725 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:05:14,725 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-19 16:05:14,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-19 16:05:14,726 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-19 16:05:14,726 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:05:14,726 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand 17 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown