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_0684b_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:05:22,137 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:05:22,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:05:22,160 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:05:22,160 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:05:22,161 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:05:22,163 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:05:22,166 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:05:22,168 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:05:22,169 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:05:22,170 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:05:22,170 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:05:22,171 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:05:22,172 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:05:22,173 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:05:22,174 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:05:22,175 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:05:22,177 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:05:22,179 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:05:22,181 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:05:22,182 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:05:22,183 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:05:22,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:05:22,186 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:05:22,186 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:05:22,187 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:05:22,188 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:05:22,189 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:05:22,190 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:05:22,191 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:05:22,191 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:05:22,192 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:05:22,192 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:05:22,192 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:05:22,194 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:05:22,194 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:05:22,195 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 16:05:22,225 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:05:22,225 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:05:22,226 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:05:22,226 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:05:22,228 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:05:22,228 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:05:22,228 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:05:22,229 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:05:22,230 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:05:22,230 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:05:22,230 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:05:22,230 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:05:22,230 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:05:22,231 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:05:22,231 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:05:22,231 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:05:22,231 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:05:22,232 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:05:22,233 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:05:22,233 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:05:22,233 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:05:22,233 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:05:22,234 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:05:22,234 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:05:22,234 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:05:22,234 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:05:22,235 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:05:22,235 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:05:22,235 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:05:22,235 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:05:22,235 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:05:22,236 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:05:22,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:05:22,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:05:22,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:05:22,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:05:22,332 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:05:22,333 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0684b_true-unreach-call.c [2018-09-19 16:05:22,697 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f2874a01/84693e605c2d4b3d80638f3ee6c7c66b/FLAG26472cc3a [2018-09-19 16:05:22,890 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:05:22,891 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0684b_true-unreach-call.c [2018-09-19 16:05:22,900 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f2874a01/84693e605c2d4b3d80638f3ee6c7c66b/FLAG26472cc3a [2018-09-19 16:05:22,917 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f2874a01/84693e605c2d4b3d80638f3ee6c7c66b [2018-09-19 16:05:22,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:05:22,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:05:22,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:05:22,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:05:22,941 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:05:22,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:05:22" (1/1) ... [2018-09-19 16:05:22,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23513d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:22, skipping insertion in model container [2018-09-19 16:05:22,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:05:22" (1/1) ... [2018-09-19 16:05:22,958 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:05:23,293 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:05:23,323 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:05:23,390 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:05:23,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23 WrapperNode [2018-09-19 16:05:23,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:05:23,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:05:23,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:05:23,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:05:23,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (1/1) ... [2018-09-19 16:05:23,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (1/1) ... [2018-09-19 16:05:23,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (1/1) ... [2018-09-19 16:05:23,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (1/1) ... [2018-09-19 16:05:23,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (1/1) ... [2018-09-19 16:05:23,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (1/1) ... [2018-09-19 16:05:23,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (1/1) ... [2018-09-19 16:05:23,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:05:23,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:05:23,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:05:23,535 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:05:23,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (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 16:05:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:05:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:05:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 16:05:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2018-09-19 16:05:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2018-09-19 16:05:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2018-09-19 16:05:23,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2018-09-19 16:05:23,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:05:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:05:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:05:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 16:05:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:05:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:05:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:05:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:05:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:05:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:05:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2018-09-19 16:05:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2018-09-19 16:05:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2018-09-19 16:05:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2018-09-19 16:05:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:05:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:05:23,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:05:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:05:23,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:05:23,991 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:24,052 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:24,109 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:24,130 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:24,175 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:24,325 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:24,353 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:24,459 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:25,958 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:26,011 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:26,074 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:26,164 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:26,174 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:26,186 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:28,299 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:28,308 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:28,326 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:30,506 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:30,545 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:46,908 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:46,919 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:05:46,927 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:05:46,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:05:46 BoogieIcfgContainer [2018-09-19 16:05:46,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:05:46,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:05:46,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:05:46,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:05:46,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:05:22" (1/3) ... [2018-09-19 16:05:46,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cc6cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:05:46, skipping insertion in model container [2018-09-19 16:05:46,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:05:23" (2/3) ... [2018-09-19 16:05:46,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cc6cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:05:46, skipping insertion in model container [2018-09-19 16:05:46,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:05:46" (3/3) ... [2018-09-19 16:05:46,935 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b_true-unreach-call.c [2018-09-19 16:05:46,945 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:05:46,955 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:05:47,012 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:05:47,012 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:05:47,012 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:05:47,013 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:05:47,013 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:05:47,013 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:05:47,013 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:05:47,013 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:05:47,013 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:05:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-09-19 16:05:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-19 16:05:47,058 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:05:47,061 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] [2018-09-19 16:05:47,063 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:05:47,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1007379435, now seen corresponding path program 1 times [2018-09-19 16:05:47,073 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:05:47,074 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 16:05:47,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:05:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:05:47,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:05:47,360 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 16:05:47,363 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:05:47,384 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:05:47,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:05:47,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:05:47,407 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:05:47,407 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:05:47,410 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 2 states. [2018-09-19 16:05:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:05:47,489 INFO L93 Difference]: Finished difference Result 424 states and 554 transitions. [2018-09-19 16:05:47,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:05:47,491 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-09-19 16:05:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:05:47,506 INFO L225 Difference]: With dead ends: 424 [2018-09-19 16:05:47,507 INFO L226 Difference]: Without dead ends: 211 [2018-09-19 16:05:47,519 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 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 16:05:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-19 16:05:47,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-19 16:05:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-19 16:05:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 251 transitions. [2018-09-19 16:05:47,586 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 251 transitions. Word has length 27 [2018-09-19 16:05:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:05:47,586 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 251 transitions. [2018-09-19 16:05:47,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:05:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 251 transitions. [2018-09-19 16:05:47,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-19 16:05:47,590 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:05:47,590 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] [2018-09-19 16:05:47,591 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:05:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1648465161, now seen corresponding path program 1 times [2018-09-19 16:05:47,592 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:05:47,593 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 16:05:47,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:05:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:05:47,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:05:47,916 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 16:05:47,917 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:05:47,936 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:05:47,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 16:05:47,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 16:05:47,941 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 16:05:47,941 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 16:05:47,942 INFO L87 Difference]: Start difference. First operand 211 states and 251 transitions. Second operand 3 states. [2018-09-19 16:05:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:05:48,058 INFO L93 Difference]: Finished difference Result 379 states and 458 transitions. [2018-09-19 16:05:48,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 16:05:48,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-09-19 16:05:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:05:48,066 INFO L225 Difference]: With dead ends: 379 [2018-09-19 16:05:48,066 INFO L226 Difference]: Without dead ends: 211 [2018-09-19 16:05:48,071 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 16:05:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-19 16:05:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-19 16:05:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-19 16:05:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 250 transitions. [2018-09-19 16:05:48,103 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 250 transitions. Word has length 62 [2018-09-19 16:05:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:05:48,103 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 250 transitions. [2018-09-19 16:05:48,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 16:05:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 250 transitions. [2018-09-19 16:05:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-19 16:05:48,111 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:05:48,112 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] [2018-09-19 16:05:48,112 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:05:48,112 INFO L82 PathProgramCache]: Analyzing trace with hash -288810204, now seen corresponding path program 1 times [2018-09-19 16:05:48,113 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:05:48,113 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) [2018-09-19 16:05:48,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:05:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:05:48,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:05:48,753 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 16:05:48,763 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 16:05:48,763 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:48,769 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:48,790 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 16:05:48,790 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:05:48,847 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 16:05:48,853 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 16:05:48,854 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:48,882 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:48,962 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 16:05:48,962 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:05:49,579 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-09-19 16:05:49,910 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 16:05:49,920 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 16:05:49,921 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:49,944 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:50,003 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 16:05:50,004 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:05:50,157 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 16:05:50,165 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 16:05:50,165 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:50,186 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:50,245 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 16:05:50,246 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:05:50,788 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:05:50,789 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:05:50,790 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 16:05:50,814 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:05:50,835 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 16:05:50,836 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:50,881 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:50,928 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 16:05:50,929 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:43 [2018-09-19 16:05:51,855 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:05:51,856 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:05:51,858 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 56 [2018-09-19 16:05:51,878 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:05:51,913 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 16:05:51,914 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:51,979 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:52,075 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-09-19 16:05:52,076 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:78, output treesize:70 [2018-09-19 16:05:52,358 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 16:05:52,403 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:05:52,428 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 16:05:52,429 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:05:52,459 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:05:52,496 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 16:05:52,499 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:59, output treesize:33 [2018-09-19 16:05:53,906 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2018-09-19 16:05:53,987 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 16:05:53,987 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:05:54,008 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:05:54,009 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2018-09-19 16:05:54,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-19 16:05:54,010 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-19 16:05:54,011 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2018-09-19 16:05:54,011 INFO L87 Difference]: Start difference. First operand 211 states and 250 transitions. Second operand 23 states. [2018-09-19 16:05:57,123 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2018-09-19 16:05:57,716 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2018-09-19 16:05:58,877 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:06:01,848 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:06:02,543 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-19 16:06:03,137 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:06:03,947 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-19 16:06:04,548 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-09-19 16:06:05,992 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-09-19 16:06:07,639 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-09-19 16:06:08,174 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:06:08,627 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:06:09,935 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-19 16:06:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:41,023 INFO L93 Difference]: Finished difference Result 254 states and 302 transitions. [2018-09-19 16:06:41,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-19 16:06:41,028 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 82 [2018-09-19 16:06:41,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:41,031 INFO L225 Difference]: With dead ends: 254 [2018-09-19 16:06:41,031 INFO L226 Difference]: Without dead ends: 200 [2018-09-19 16:06:41,033 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=252, Invalid=2004, Unknown=0, NotChecked=0, Total=2256 [2018-09-19 16:06:41,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-09-19 16:06:41,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-09-19 16:06:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-09-19 16:06:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 228 transitions. [2018-09-19 16:06:41,053 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 228 transitions. Word has length 82 [2018-09-19 16:06:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:41,054 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 228 transitions. [2018-09-19 16:06:41,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-19 16:06:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 228 transitions. [2018-09-19 16:06:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-19 16:06:41,056 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:41,056 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, 1, 1, 1, 1] [2018-09-19 16:06:41,057 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:41,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1008594192, now seen corresponding path program 1 times [2018-09-19 16:06:41,058 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:41,058 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 16:06:41,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:06:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:41,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:41,411 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 16:06:41,419 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 16:06:41,419 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:41,459 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:41,485 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 16:06:41,485 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:06:41,524 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 16:06:41,531 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 16:06:41,531 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:41,534 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:41,548 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 16:06:41,548 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:06:41,936 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 16:06:41,937 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:06:41,953 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:06:41,953 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:06:41,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:06:41,954 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:06:41,954 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:06:41,954 INFO L87 Difference]: Start difference. First operand 200 states and 228 transitions. Second operand 9 states. [2018-09-19 16:06:42,670 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:06:42,952 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:06:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:50,926 INFO L93 Difference]: Finished difference Result 249 states and 288 transitions. [2018-09-19 16:06:50,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:06:50,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2018-09-19 16:06:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:50,929 INFO L225 Difference]: With dead ends: 249 [2018-09-19 16:06:50,930 INFO L226 Difference]: Without dead ends: 194 [2018-09-19 16:06:50,930 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:06:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-09-19 16:06:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-09-19 16:06:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-19 16:06:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2018-09-19 16:06:50,947 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 87 [2018-09-19 16:06:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:50,948 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2018-09-19 16:06:50,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:06:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2018-09-19 16:06:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-19 16:06:50,950 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:50,950 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, 1, 1, 1, 1] [2018-09-19 16:06:50,951 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:50,951 INFO L82 PathProgramCache]: Analyzing trace with hash 647256368, now seen corresponding path program 1 times [2018-09-19 16:06:50,951 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:50,951 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 16:06:50,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:06:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:51,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:51,302 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 16:06:51,308 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 16:06:51,309 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:51,315 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:51,330 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 16:06:51,330 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:06:51,370 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 16:06:51,377 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 16:06:51,377 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:06:51,381 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:06:51,391 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 16:06:51,392 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:06:51,580 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 16:06:51,580 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:06:51,593 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:06:51,593 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:06:51,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:06:51,594 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:06:51,594 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:06:51,594 INFO L87 Difference]: Start difference. First operand 194 states and 217 transitions. Second operand 8 states. [2018-09-19 16:06:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:06:57,402 INFO L93 Difference]: Finished difference Result 202 states and 224 transitions. [2018-09-19 16:06:57,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:06:57,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2018-09-19 16:06:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:06:57,406 INFO L225 Difference]: With dead ends: 202 [2018-09-19 16:06:57,407 INFO L226 Difference]: Without dead ends: 194 [2018-09-19 16:06:57,408 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:06:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-09-19 16:06:57,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-09-19 16:06:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-19 16:06:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 215 transitions. [2018-09-19 16:06:57,425 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 215 transitions. Word has length 87 [2018-09-19 16:06:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:06:57,425 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 215 transitions. [2018-09-19 16:06:57,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:06:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 215 transitions. [2018-09-19 16:06:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-19 16:06:57,427 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:06:57,427 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, 1, 1, 1, 1] [2018-09-19 16:06:57,428 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:06:57,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1127750994, now seen corresponding path program 1 times [2018-09-19 16:06:57,428 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:06:57,429 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) [2018-09-19 16:06:57,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 16:06:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:06:57,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:06:58,080 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:06:58,443 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:06:58,993 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:06:59,845 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:06:59,867 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 16:06:59,867 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:06:59,880 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:06:59,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:06:59,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:06:59,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:06:59,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:06:59,881 INFO L87 Difference]: Start difference. First operand 194 states and 215 transitions. Second operand 7 states. [2018-09-19 16:07:10,057 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:07:14,682 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:07:21,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:07:21,208 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2018-09-19 16:07:21,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:07:21,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2018-09-19 16:07:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:07:21,212 INFO L225 Difference]: With dead ends: 200 [2018-09-19 16:07:21,212 INFO L226 Difference]: Without dead ends: 192 [2018-09-19 16:07:21,213 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:07:21,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-09-19 16:07:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-09-19 16:07:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-09-19 16:07:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2018-09-19 16:07:21,232 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 87 [2018-09-19 16:07:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:07:21,232 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2018-09-19 16:07:21,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:07:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2018-09-19 16:07:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-19 16:07:21,234 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:07:21,235 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, 1, 1, 1, 1, 1, 1] [2018-09-19 16:07:21,235 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:07:21,235 INFO L82 PathProgramCache]: Analyzing trace with hash -762925118, now seen corresponding path program 1 times [2018-09-19 16:07:21,236 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:07:21,236 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) [2018-09-19 16:07:21,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:07:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:07:21,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:07:22,769 WARN L178 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:07:23,058 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:07:23,739 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:07:24,691 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:07:24,713 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 16:07:24,714 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:07:24,727 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:07:24,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:07:24,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:07:24,727 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:07:24,728 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:07:24,728 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand 7 states. [2018-09-19 16:07:38,590 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:07:39,532 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:07:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:07:44,704 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2018-09-19 16:07:44,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:07:44,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2018-09-19 16:07:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:07:44,708 INFO L225 Difference]: With dead ends: 198 [2018-09-19 16:07:44,708 INFO L226 Difference]: Without dead ends: 190 [2018-09-19 16:07:44,708 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:07:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-09-19 16:07:44,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-09-19 16:07:44,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-09-19 16:07:44,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 209 transitions. [2018-09-19 16:07:44,725 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 209 transitions. Word has length 89 [2018-09-19 16:07:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:07:44,726 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 209 transitions. [2018-09-19 16:07:44,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:07:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 209 transitions. [2018-09-19 16:07:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-19 16:07:44,728 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:07:44,728 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, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:07:44,728 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:07:44,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1062904628, now seen corresponding path program 1 times [2018-09-19 16:07:44,729 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:07:44,729 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) [2018-09-19 16:07:44,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 16:07:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:07:45,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:07:45,178 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 16:07:45,183 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 16:07:45,183 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:07:45,189 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:07:45,203 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:07:45,204 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:07:45,244 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 16:07:45,248 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 16:07:45,249 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:07:45,252 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:07:45,262 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 16:07:45,263 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:07:45,466 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 16:07:45,467 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:07:45,481 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:07:45,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:07:45,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:07:45,482 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:07:45,482 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:07:45,482 INFO L87 Difference]: Start difference. First operand 190 states and 209 transitions. Second operand 9 states. [2018-09-19 16:07:46,702 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:07:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:07:49,536 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions. [2018-09-19 16:07:49,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:07:49,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2018-09-19 16:07:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:07:49,541 INFO L225 Difference]: With dead ends: 196 [2018-09-19 16:07:49,541 INFO L226 Difference]: Without dead ends: 152 [2018-09-19 16:07:49,542 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:07:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-09-19 16:07:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-09-19 16:07:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-09-19 16:07:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2018-09-19 16:07:49,553 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 90 [2018-09-19 16:07:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:07:49,553 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2018-09-19 16:07:49,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:07:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2018-09-19 16:07:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-19 16:07:49,555 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:07:49,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:07:49,555 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:07:49,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1509323926, now seen corresponding path program 1 times [2018-09-19 16:07:49,556 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:07:49,556 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 16:07:49,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:07:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:07:49,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:07:49,910 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 16:07:49,917 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 16:07:49,918 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:07:49,923 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:07:49,940 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 16:07:49,940 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:07:50,000 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 16:07:50,005 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 16:07:50,005 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:07:50,008 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:07:50,019 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 16:07:50,020 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:07:50,395 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 16:07:50,396 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:07:50,409 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:07:50,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:07:50,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:07:50,410 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:07:50,410 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:07:50,410 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 11 states. [2018-09-19 16:08:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:08:15,811 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2018-09-19 16:08:16,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:08:16,226 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2018-09-19 16:08:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:08:16,230 INFO L225 Difference]: With dead ends: 165 [2018-09-19 16:08:16,230 INFO L226 Difference]: Without dead ends: 156 [2018-09-19 16:08:16,230 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:08:16,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-09-19 16:08:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2018-09-19 16:08:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-09-19 16:08:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2018-09-19 16:08:16,244 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 103 [2018-09-19 16:08:16,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:08:16,244 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2018-09-19 16:08:16,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:08:16,244 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2018-09-19 16:08:16,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-09-19 16:08:16,245 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:08:16,246 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, 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 16:08:16,246 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:08:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash -299784852, now seen corresponding path program 1 times [2018-09-19 16:08:16,247 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:08:16,247 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 16:08:16,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:08:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:08:20,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:08:21,035 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 16:08:21,042 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 16:08:21,042 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:08:21,050 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:08:21,068 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 16:08:21,069 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:08:21,124 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 16:08:21,129 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 16:08:21,129 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:08:21,133 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:08:21,146 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 16:08:21,146 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:08:21,499 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 16:08:21,499 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:08:21,585 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:08:21,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:08:21,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:08:21,586 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:08:21,586 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:08:21,586 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand 11 states. [2018-09-19 16:08:22,803 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:08:23,638 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:08:24,330 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:08:24,559 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:08:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:08:52,496 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2018-09-19 16:08:52,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:08:52,585 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2018-09-19 16:08:52,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:08:52,586 INFO L225 Difference]: With dead ends: 167 [2018-09-19 16:08:52,587 INFO L226 Difference]: Without dead ends: 151 [2018-09-19 16:08:52,589 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:08:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-19 16:08:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2018-09-19 16:08:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-19 16:08:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2018-09-19 16:08:52,606 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 105 [2018-09-19 16:08:52,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:08:52,607 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2018-09-19 16:08:52,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:08:52,607 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2018-09-19 16:08:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-19 16:08:52,608 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:08:52,608 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, 1, 1, 1, 1, 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 16:08:52,609 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:08:52,609 INFO L82 PathProgramCache]: Analyzing trace with hash -142441100, now seen corresponding path program 1 times [2018-09-19 16:08:52,609 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:08:52,610 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 16:08:52,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:08:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:08:52,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:08:53,007 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 16:08:53,013 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 16:08:53,013 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:08:53,072 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:08:53,101 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 16:08:53,102 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:08:53,161 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 16:08:53,213 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 16:08:53,213 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:08:53,306 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:08:53,328 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 16:08:53,328 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:08:53,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2018-09-19 16:08:53,665 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-09-19 16:08:53,665 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:08:53,692 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:08:53,830 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 16:08:53,831 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2018-09-19 16:08:53,944 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-09-19 16:08:53,950 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-09-19 16:08:53,950 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:08:53,993 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:08:54,017 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 16:08:54,018 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:40, output treesize:29 [2018-09-19 16:08:54,742 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 16:08:54,742 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:08:54,756 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:08:54,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:08:54,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:08:54,757 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:08:54,757 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:08:54,758 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand 14 states. [2018-09-19 16:08:56,569 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:08:57,437 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:08:58,034 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2018-09-19 16:08:58,546 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-09-19 16:08:59,137 WARN L178 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-09-19 16:08:59,635 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-09-19 16:09:00,376 WARN L178 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2018-09-19 16:09:21,624 WARN L178 SmtUtils]: Spent 4.89 s on a formula simplification. DAG size of input: 44 DAG size of output: 42 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown