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_0662b_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:01:02,247 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:01:02,249 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:01:02,265 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:01:02,265 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:01:02,266 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:01:02,270 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:01:02,273 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:01:02,275 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:01:02,276 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:01:02,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:01:02,279 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:01:02,280 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:01:02,281 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:01:02,285 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:01:02,286 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:01:02,287 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:01:02,295 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:01:02,297 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:01:02,299 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:01:02,303 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:01:02,304 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:01:02,307 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:01:02,308 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:01:02,308 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:01:02,310 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:01:02,311 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:01:02,313 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:01:02,314 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:01:02,315 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:01:02,315 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:01:02,316 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:01:02,316 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:01:02,316 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:01:02,323 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:01:02,325 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:01:02,325 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 16:01:02,352 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:01:02,352 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:01:02,353 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:01:02,353 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:01:02,354 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:01:02,354 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:01:02,355 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:01:02,355 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:01:02,355 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:01:02,355 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:01:02,356 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:01:02,356 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:01:02,356 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:01:02,356 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:01:02,356 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:01:02,357 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:01:02,357 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:01:02,357 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:01:02,357 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:01:02,357 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:01:02,358 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:01:02,358 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:01:02,358 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:01:02,358 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:01:02,360 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:01:02,360 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:01:02,360 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:01:02,360 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:01:02,361 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:01:02,361 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:01:02,361 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:01:02,361 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:01:02,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:01:02,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:01:02,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:01:02,462 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:01:02,463 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:01:02,464 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0662b_true-unreach-call.c [2018-09-19 16:01:02,722 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c9d589c/fbaf4e6db6fc47969d7a740bc6fc45c3/FLAG20962cf98 [2018-09-19 16:01:03,017 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:01:03,018 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0662b_true-unreach-call.c [2018-09-19 16:01:03,043 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c9d589c/fbaf4e6db6fc47969d7a740bc6fc45c3/FLAG20962cf98 [2018-09-19 16:01:03,062 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c9d589c/fbaf4e6db6fc47969d7a740bc6fc45c3 [2018-09-19 16:01:03,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:01:03,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:01:03,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:01:03,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:01:03,088 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:01:03,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44294c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03, skipping insertion in model container [2018-09-19 16:01:03,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,106 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:01:03,441 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:01:03,476 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:01:03,601 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:01:03,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03 WrapperNode [2018-09-19 16:01:03,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:01:03,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:01:03,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:01:03,698 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:01:03,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (1/1) ... [2018-09-19 16:01:03,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:01:03,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:01:03,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:01:03,780 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:01:03,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (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 16:01:03,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:01:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:01:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 16:01:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2018-09-19 16:01:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2018-09-19 16:01:03,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:01:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:01:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:01:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 16:01:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:01:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:01:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:01:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:01:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:01:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:01:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2018-09-19 16:01:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2018-09-19 16:01:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:01:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:01:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:01:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:01:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:01:04,426 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:04,449 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:04,467 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:04,513 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:04,532 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:04,559 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:07,156 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:07,193 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:07,220 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:07,887 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:07,899 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:07,928 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:24,041 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:24,066 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:24,208 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:24,249 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:01:27,679 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:01:27,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:01:27 BoogieIcfgContainer [2018-09-19 16:01:27,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:01:27,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:01:27,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:01:27,685 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:01:27,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:01:03" (1/3) ... [2018-09-19 16:01:27,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11658984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:01:27, skipping insertion in model container [2018-09-19 16:01:27,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:01:03" (2/3) ... [2018-09-19 16:01:27,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11658984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:01:27, skipping insertion in model container [2018-09-19 16:01:27,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:01:27" (3/3) ... [2018-09-19 16:01:27,689 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662b_true-unreach-call.c [2018-09-19 16:01:27,698 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:01:27,705 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:01:27,750 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:01:27,750 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:01:27,750 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:01:27,751 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:01:27,751 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:01:27,751 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:01:27,751 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:01:27,751 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:01:27,751 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:01:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2018-09-19 16:01:27,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 16:01:27,781 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:27,782 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:27,785 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:27,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1279955196, now seen corresponding path program 1 times [2018-09-19 16:01:27,795 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:27,796 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:01:27,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:01:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:27,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:01:28,011 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:28,030 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:28,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:01:28,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:01:28,051 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:01:28,052 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:01:28,054 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 2 states. [2018-09-19 16:01:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:28,107 INFO L93 Difference]: Finished difference Result 349 states and 466 transitions. [2018-09-19 16:01:28,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:01:28,109 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-19 16:01:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:28,124 INFO L225 Difference]: With dead ends: 349 [2018-09-19 16:01:28,124 INFO L226 Difference]: Without dead ends: 174 [2018-09-19 16:01:28,130 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:01:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-09-19 16:01:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-09-19 16:01:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-19 16:01:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 213 transitions. [2018-09-19 16:01:28,203 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 213 transitions. Word has length 19 [2018-09-19 16:01:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:28,204 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 213 transitions. [2018-09-19 16:01:28,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:01:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 213 transitions. [2018-09-19 16:01:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-19 16:01:28,209 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:28,210 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:28,210 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:28,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1584750586, now seen corresponding path program 1 times [2018-09-19 16:01:28,213 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:28,213 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) [2018-09-19 16:01:28,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:01:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:28,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:28,770 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-09-19 16:01:28,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:01:28,842 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:01:28,843 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:28,900 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:28,942 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:01:28,942 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:01:29,133 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:01:29,141 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:01:29,142 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:29,178 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:29,285 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:01:29,286 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:01:30,085 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 16:01:30,106 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:30,107 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:30,108 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2018-09-19 16:01:30,124 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:30,169 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:01:30,170 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:30,249 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:30,333 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:01:30,333 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:43 [2018-09-19 16:01:30,915 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:30,929 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:30,931 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 56 [2018-09-19 16:01:30,961 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:30,989 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-19 16:01:30,990 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:31,039 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:31,136 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-09-19 16:01:31,136 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:78, output treesize:70 [2018-09-19 16:01:31,318 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2018-09-19 16:01:31,331 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:31,338 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-19 16:01:31,338 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:31,361 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:31,404 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:01:31,405 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:59, output treesize:33 [2018-09-19 16:01:32,487 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2018-09-19 16:01:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:01:32,524 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:32,543 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:32,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-19 16:01:32,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-19 16:01:32,546 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-19 16:01:32,546 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:01:32,547 INFO L87 Difference]: Start difference. First operand 174 states and 213 transitions. Second operand 16 states. [2018-09-19 16:01:33,205 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:01:33,584 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:01:34,090 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-19 16:01:35,092 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 16:01:35,894 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:01:36,371 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:01:36,957 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-19 16:01:37,804 WARN L178 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:01:38,352 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-19 16:01:40,903 WARN L178 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 51 [2018-09-19 16:01:43,059 WARN L178 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 55 [2018-09-19 16:01:44,887 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-09-19 16:01:45,375 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:01:45,782 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:01:48,681 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-19 16:02:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:23,702 INFO L93 Difference]: Finished difference Result 217 states and 265 transitions. [2018-09-19 16:02:23,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-19 16:02:23,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2018-09-19 16:02:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:23,709 INFO L225 Difference]: With dead ends: 217 [2018-09-19 16:02:23,709 INFO L226 Difference]: Without dead ends: 163 [2018-09-19 16:02:23,712 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=181, Invalid=810, Unknown=1, NotChecked=0, Total=992 [2018-09-19 16:02:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-19 16:02:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-19 16:02:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-19 16:02:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 191 transitions. [2018-09-19 16:02:23,732 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 191 transitions. Word has length 45 [2018-09-19 16:02:23,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:23,733 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 191 transitions. [2018-09-19 16:02:23,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-19 16:02:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 191 transitions. [2018-09-19 16:02:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:02:23,735 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:23,735 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:02:23,735 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:23,735 INFO L82 PathProgramCache]: Analyzing trace with hash 66485668, now seen corresponding path program 1 times [2018-09-19 16:02:23,736 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:23,736 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:02:23,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:23,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:23,931 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:02:23,938 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:02:23,938 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:23,946 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:23,964 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:02:23,965 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:02:24,009 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:02:24,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:02:24,022 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:24,027 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:24,042 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:02:24,043 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:02:24,709 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-09-19 16:02:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:02:24,869 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:24,879 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:24,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:02:24,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:02:24,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:02:24,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:02:24,881 INFO L87 Difference]: Start difference. First operand 163 states and 191 transitions. Second operand 11 states. [2018-09-19 16:02:25,565 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:02:25,892 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:02:27,257 WARN L178 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-09-19 16:02:27,660 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-09-19 16:02:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:38,064 INFO L93 Difference]: Finished difference Result 220 states and 262 transitions. [2018-09-19 16:02:38,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:02:38,065 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2018-09-19 16:02:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:38,069 INFO L225 Difference]: With dead ends: 220 [2018-09-19 16:02:38,070 INFO L226 Difference]: Without dead ends: 165 [2018-09-19 16:02:38,071 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:02:38,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-09-19 16:02:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2018-09-19 16:02:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-19 16:02:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2018-09-19 16:02:38,090 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 50 [2018-09-19 16:02:38,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:38,090 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2018-09-19 16:02:38,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:02:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2018-09-19 16:02:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:02:38,092 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:38,093 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:02:38,093 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash -742860958, now seen corresponding path program 1 times [2018-09-19 16:02:38,094 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:38,094 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 16:02:38,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:38,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:38,343 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:02:38,356 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:02:38,357 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2018-09-19 16:02:38,396 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:38,427 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:02:38,427 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:38,442 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:38,463 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:02:38,463 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:02:38,677 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:02:38,678 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:02:38,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 56 [2018-09-19 16:02:38,713 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:38,737 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-19 16:02:38,738 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:38,772 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:38,815 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:02:38,815 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:02:38,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2018-09-19 16:02:38,939 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:02:38,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-19 16:02:38,944 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:38,960 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:38,975 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:02:38,975 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:02:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:02:39,278 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:39,301 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:39,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:02:39,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:02:39,303 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:02:39,303 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:02:39,303 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 11 states. [2018-09-19 16:02:40,965 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:02:41,653 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:02:42,407 WARN L178 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:02:51,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:51,003 INFO L93 Difference]: Finished difference Result 212 states and 250 transitions. [2018-09-19 16:02:51,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:02:51,005 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2018-09-19 16:02:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:51,006 INFO L225 Difference]: With dead ends: 212 [2018-09-19 16:02:51,007 INFO L226 Difference]: Without dead ends: 157 [2018-09-19 16:02:51,008 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:02:51,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-09-19 16:02:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-09-19 16:02:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-19 16:02:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2018-09-19 16:02:51,027 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 50 [2018-09-19 16:02:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:51,028 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2018-09-19 16:02:51,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:02:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2018-09-19 16:02:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:02:51,030 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:51,030 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:02:51,030 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash -52671134, now seen corresponding path program 1 times [2018-09-19 16:02:51,031 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:51,031 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:02:51,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:02:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:51,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:51,639 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:02:52,219 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:02:52,736 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:02:53,593 WARN L178 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:02:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:02:53,603 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:53,615 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:53,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:02:53,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:02:53,616 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:02:53,616 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:02:53,616 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 7 states. [2018-09-19 16:03:07,701 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:11,216 WARN L178 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:19,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:19,865 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2018-09-19 16:03:19,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:03:19,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2018-09-19 16:03:19,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:19,867 INFO L225 Difference]: With dead ends: 164 [2018-09-19 16:03:19,867 INFO L226 Difference]: Without dead ends: 157 [2018-09-19 16:03:19,871 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:03:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-09-19 16:03:19,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-09-19 16:03:19,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-19 16:03:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 179 transitions. [2018-09-19 16:03:19,893 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 179 transitions. Word has length 50 [2018-09-19 16:03:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:19,893 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 179 transitions. [2018-09-19 16:03:19,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:03:19,893 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 179 transitions. [2018-09-19 16:03:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:03:19,895 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:19,895 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:03:19,896 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1722336228, now seen corresponding path program 1 times [2018-09-19 16:03:19,897 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:19,897 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 16:03:19,906 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 16:03:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:20,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:20,165 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:03:20,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:03:20,172 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:20,177 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:20,192 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:03:20,192 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:03:20,232 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:03:20,236 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:03:20,236 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:03:20,240 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:03:20,251 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:03:20,252 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:03:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:03:20,406 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:20,418 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:20,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:03:20,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:03:20,419 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:03:20,419 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:03:20,420 INFO L87 Difference]: Start difference. First operand 157 states and 179 transitions. Second operand 8 states. [2018-09-19 16:03:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:25,770 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2018-09-19 16:03:25,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:03:25,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2018-09-19 16:03:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:25,773 INFO L225 Difference]: With dead ends: 164 [2018-09-19 16:03:25,773 INFO L226 Difference]: Without dead ends: 155 [2018-09-19 16:03:25,774 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 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 16:03:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-19 16:03:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-19 16:03:25,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-19 16:03:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2018-09-19 16:03:25,790 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 50 [2018-09-19 16:03:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:25,792 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2018-09-19 16:03:25,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:03:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2018-09-19 16:03:25,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:03:25,794 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:25,794 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:03:25,794 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1711064758, now seen corresponding path program 1 times [2018-09-19 16:03:25,795 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:25,795 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:03:25,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:03:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:26,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:27,656 WARN L178 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:28,171 WARN L178 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:29,140 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:03:29,771 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-19 16:03:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:03:29,780 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:29,793 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:29,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:03:29,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:03:29,793 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:03:29,794 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:03:29,794 INFO L87 Difference]: Start difference. First operand 155 states and 175 transitions. Second operand 7 states. [2018-09-19 16:03:50,304 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:52,039 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:04:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:01,039 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2018-09-19 16:04:01,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:04:01,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2018-09-19 16:04:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:01,042 INFO L225 Difference]: With dead ends: 161 [2018-09-19 16:04:01,042 INFO L226 Difference]: Without dead ends: 153 [2018-09-19 16:04:01,043 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:04:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-19 16:04:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-09-19 16:04:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-09-19 16:04:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2018-09-19 16:04:01,056 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 52 [2018-09-19 16:04:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:01,056 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2018-09-19 16:04:01,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:04:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2018-09-19 16:04:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-19 16:04:01,058 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:01,058 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:04:01,058 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:01,058 INFO L82 PathProgramCache]: Analyzing trace with hash 450754314, now seen corresponding path program 1 times [2018-09-19 16:04:01,059 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:01,059 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 16:04:01,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:01,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:01,406 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:04:01,413 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:04:01,413 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:01,419 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:01,438 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:01,438 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:04:01,493 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:04:01,511 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:04:01,511 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:01,534 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:01,608 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:01,609 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:04:02,849 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-09-19 16:04:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:04:03,101 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:03,114 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:03,114 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 16:04:03,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 16:04:03,115 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 16:04:03,115 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:04:03,115 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand 13 states. [2018-09-19 16:04:05,131 WARN L178 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-19 16:04:05,517 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:04:05,965 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:04:06,479 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2018-09-19 16:04:07,259 WARN L178 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-09-19 16:04:08,105 WARN L178 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-09-19 16:04:12,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:12,840 INFO L93 Difference]: Finished difference Result 161 states and 179 transitions. [2018-09-19 16:04:12,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:04:12,841 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-09-19 16:04:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:12,843 INFO L225 Difference]: With dead ends: 161 [2018-09-19 16:04:12,843 INFO L226 Difference]: Without dead ends: 155 [2018-09-19 16:04:12,844 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-09-19 16:04:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-19 16:04:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2018-09-19 16:04:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-09-19 16:04:12,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 170 transitions. [2018-09-19 16:04:12,860 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 170 transitions. Word has length 53 [2018-09-19 16:04:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:12,860 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 170 transitions. [2018-09-19 16:04:12,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 16:04:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 170 transitions. [2018-09-19 16:04:12,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-19 16:04:12,862 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:12,862 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:04:12,862 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1992128403, now seen corresponding path program 1 times [2018-09-19 16:04:12,863 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:12,863 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:04:12,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:13,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:13,315 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:04:13,321 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:04:13,322 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:13,326 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:13,341 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:13,341 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:04:13,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:04:13,399 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:04:13,400 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:13,403 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:13,415 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:13,415 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:04:13,853 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-19 16:04:14,097 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-19 16:04:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:04:14,241 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:14,260 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:14,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:04:14,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:04:14,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:04:14,261 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:04:14,261 INFO L87 Difference]: Start difference. First operand 153 states and 170 transitions. Second operand 11 states. [2018-09-19 16:04:15,198 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:04:15,788 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:04:16,481 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-09-19 16:04:16,838 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-09-19 16:04:17,222 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-09-19 16:04:18,248 WARN L178 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-09-19 16:04:18,925 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-09-19 16:04:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:23,406 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2018-09-19 16:04:23,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:04:23,407 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2018-09-19 16:04:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:23,409 INFO L225 Difference]: With dead ends: 189 [2018-09-19 16:04:23,409 INFO L226 Difference]: Without dead ends: 152 [2018-09-19 16:04:23,410 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2018-09-19 16:04:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-09-19 16:04:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2018-09-19 16:04:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-09-19 16:04:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 164 transitions. [2018-09-19 16:04:23,427 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 164 transitions. Word has length 56 [2018-09-19 16:04:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:23,427 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 164 transitions. [2018-09-19 16:04:23,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:04:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 164 transitions. [2018-09-19 16:04:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-19 16:04:23,429 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:23,429 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] [2018-09-19 16:04:23,430 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash -984123626, now seen corresponding path program 1 times [2018-09-19 16:04:23,430 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:23,430 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) [2018-09-19 16:04:23,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-19 16:04:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:23,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:23,735 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:04:23,741 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:04:23,742 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:23,748 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:23,767 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:23,768 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:04:23,817 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:04:23,822 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:04:23,823 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:23,826 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:23,838 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:23,839 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:04:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:04:24,016 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:24,034 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:24,034 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:04:24,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:04:24,035 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:04:24,035 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:04:24,036 INFO L87 Difference]: Start difference. First operand 150 states and 164 transitions. Second operand 8 states. [2018-09-19 16:04:24,761 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:04:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:28,959 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2018-09-19 16:04:28,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:04:28,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2018-09-19 16:04:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:28,962 INFO L225 Difference]: With dead ends: 156 [2018-09-19 16:04:28,962 INFO L226 Difference]: Without dead ends: 148 [2018-09-19 16:04:28,962 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:04:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-19 16:04:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-09-19 16:04:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-09-19 16:04:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 160 transitions. [2018-09-19 16:04:28,978 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 160 transitions. Word has length 66 [2018-09-19 16:04:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:28,978 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 160 transitions. [2018-09-19 16:04:28,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:04:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 160 transitions. [2018-09-19 16:04:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-09-19 16:04:28,979 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:28,980 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] [2018-09-19 16:04:28,980 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash -819085874, now seen corresponding path program 1 times [2018-09-19 16:04:28,981 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:28,981 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-19 16:04:28,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:29,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:29,442 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:04:29,443 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:04:29,444 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2018-09-19 16:04:29,455 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:29,474 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-19 16:04:29,475 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:29,526 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:29,549 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:29,549 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:04:29,746 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2018-09-19 16:04:29,793 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:29,868 INFO L303 Elim1Store]: Index analysis took 120 ms [2018-09-19 16:04:29,869 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2018-09-19 16:04:29,870 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:29,995 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:30,124 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:30,125 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:32 [2018-09-19 16:04:32,317 WARN L178 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:04:32,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2018-09-19 16:04:32,338 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:04:32,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 11 [2018-09-19 16:04:32,345 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:32,362 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:32,379 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:04:32,379 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:39, output treesize:18 [2018-09-19 16:04:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:04:32,929 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:32,953 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:32,953 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 16:04:32,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 16:04:32,954 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 16:04:32,954 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-09-19 16:04:32,954 INFO L87 Difference]: Start difference. First operand 148 states and 160 transitions. Second operand 12 states. [2018-09-19 16:04:33,794 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-19 16:04:35,354 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:04:35,601 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:04:36,109 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 16:04:37,053 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-19 16:04:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:40,444 INFO L93 Difference]: Finished difference Result 148 states and 160 transitions. [2018-09-19 16:04:40,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:04:40,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2018-09-19 16:04:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:40,446 INFO L225 Difference]: With dead ends: 148 [2018-09-19 16:04:40,446 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:04:40,447 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2018-09-19 16:04:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:04:40,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:04:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:04:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:04:40,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2018-09-19 16:04:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:40,448 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:04:40,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 16:04:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:04:40,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:04:40,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:05:36,087 WARN L178 SmtUtils]: Spent 55.34 s on a formula simplification. DAG size of input: 261 DAG size of output: 231 Received shutdown request... [2018-09-19 16:05:44,867 WARN L186 SmtUtils]: Removed 28 from assertion stack [2018-09-19 16:05:44,867 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-19 16:05:44,869 INFO L168 Benchmark]: Toolchain (without parser) took 281792.19 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 854.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.4 MB). Peak memory consumption was 86.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:05:44,869 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:05:44,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-19 16:05:44,870 INFO L168 Benchmark]: Boogie Preprocessor took 79.84 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:05:44,871 INFO L168 Benchmark]: RCFGBuilder took 23900.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -735.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:05:44,871 INFO L168 Benchmark]: TraceAbstraction took 257186.94 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 130.0 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -53.7 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:05:44,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.84 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 23900.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -735.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257186.94 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 130.0 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -53.7 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 260]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 235. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown