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_0661a_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 15:59:55,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 15:59:55,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 15:59:55,930 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 15:59:55,930 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 15:59:55,931 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 15:59:55,933 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 15:59:55,937 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 15:59:55,939 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 15:59:55,940 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 15:59:55,941 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 15:59:55,941 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 15:59:55,942 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 15:59:55,943 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 15:59:55,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 15:59:55,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 15:59:55,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 15:59:55,949 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 15:59:55,951 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 15:59:55,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 15:59:55,954 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 15:59:55,955 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 15:59:55,958 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 15:59:55,958 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 15:59:55,958 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 15:59:55,959 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 15:59:55,960 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 15:59:55,961 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 15:59:55,962 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 15:59:55,964 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 15:59:55,964 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 15:59:55,965 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 15:59:55,965 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 15:59:55,965 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 15:59:55,966 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 15:59:55,967 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 15:59:55,971 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 15:59:56,003 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 15:59:56,003 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 15:59:56,004 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 15:59:56,005 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 15:59:56,005 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 15:59:56,005 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 15:59:56,006 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 15:59:56,006 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 15:59:56,006 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 15:59:56,007 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 15:59:56,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 15:59:56,008 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 15:59:56,008 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 15:59:56,008 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 15:59:56,008 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 15:59:56,009 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 15:59:56,009 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 15:59:56,009 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 15:59:56,009 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 15:59:56,010 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 15:59:56,010 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 15:59:56,010 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 15:59:56,010 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 15:59:56,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:59:56,011 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 15:59:56,011 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 15:59:56,011 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 15:59:56,011 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 15:59:56,013 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 15:59:56,013 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 15:59:56,014 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 15:59:56,014 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 15:59:56,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 15:59:56,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 15:59:56,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 15:59:56,108 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 15:59:56,109 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 15:59:56,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661a_true-unreach-call.c [2018-09-19 15:59:56,484 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982f17768/06ff935ebdc74d66a6236cbdddc9e279/FLAG10b980159 [2018-09-19 15:59:56,679 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 15:59:56,680 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0661a_true-unreach-call.c [2018-09-19 15:59:56,692 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982f17768/06ff935ebdc74d66a6236cbdddc9e279/FLAG10b980159 [2018-09-19 15:59:56,716 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982f17768/06ff935ebdc74d66a6236cbdddc9e279 [2018-09-19 15:59:56,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 15:59:56,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 15:59:56,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 15:59:56,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 15:59:56,738 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 15:59:56,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:59:56" (1/1) ... [2018-09-19 15:59:56,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d81358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:56, skipping insertion in model container [2018-09-19 15:59:56,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:59:56" (1/1) ... [2018-09-19 15:59:56,755 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 15:59:57,076 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:59:57,110 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 15:59:57,230 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:59:57,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57 WrapperNode [2018-09-19 15:59:57,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 15:59:57,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 15:59:57,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 15:59:57,284 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 15:59:57,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (1/1) ... [2018-09-19 15:59:57,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (1/1) ... [2018-09-19 15:59:57,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (1/1) ... [2018-09-19 15:59:57,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (1/1) ... [2018-09-19 15:59:57,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (1/1) ... [2018-09-19 15:59:57,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (1/1) ... [2018-09-19 15:59:57,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (1/1) ... [2018-09-19 15:59:57,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 15:59:57,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 15:59:57,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 15:59:57,362 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 15:59:57,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:59:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 15:59:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 15:59:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 15:59:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2018-09-19 15:59:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2018-09-19 15:59:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-19 15:59:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 15:59:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 15:59:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 15:59:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 15:59:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 15:59:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 15:59:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 15:59:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 15:59:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 15:59:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 15:59:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2018-09-19 15:59:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2018-09-19 15:59:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-19 15:59:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 15:59:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 15:59:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 15:59:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 15:59:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 15:59:57,894 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:57,927 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:58,054 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:58,620 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:58,644 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:58,673 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:58,732 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:58,744 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 15:59:58,771 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:01,483 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:01,501 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:01,553 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:01,566 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:01,584 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:21,030 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:21,056 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:21,099 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:21,113 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:00:21,124 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:00:21,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:00:21 BoogieIcfgContainer [2018-09-19 16:00:21,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:00:21,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:00:21,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:00:21,129 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:00:21,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:59:56" (1/3) ... [2018-09-19 16:00:21,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e4c769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:00:21, skipping insertion in model container [2018-09-19 16:00:21,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:59:57" (2/3) ... [2018-09-19 16:00:21,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e4c769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:00:21, skipping insertion in model container [2018-09-19 16:00:21,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:00:21" (3/3) ... [2018-09-19 16:00:21,134 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661a_true-unreach-call.c [2018-09-19 16:00:21,144 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:00:21,154 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:00:21,212 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:00:21,212 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:00:21,213 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:00:21,213 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:00:21,213 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:00:21,213 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:00:21,213 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:00:21,213 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:00:21,214 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:00:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2018-09-19 16:00:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 16:00:21,253 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:00:21,257 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:00:21,260 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:00:21,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1502178536, now seen corresponding path program 1 times [2018-09-19 16:00:21,270 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:00:21,271 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:00:21,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:00:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:00:21,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:00:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:00:21,536 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:00:21,558 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:00:21,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:00:21,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:00:21,581 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:00:21,582 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:00:21,586 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 2 states. [2018-09-19 16:00:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:00:21,676 INFO L93 Difference]: Finished difference Result 383 states and 507 transitions. [2018-09-19 16:00:21,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:00:21,679 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-09-19 16:00:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:00:21,700 INFO L225 Difference]: With dead ends: 383 [2018-09-19 16:00:21,701 INFO L226 Difference]: Without dead ends: 191 [2018-09-19 16:00:21,707 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:00:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-19 16:00:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-19 16:00:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-19 16:00:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 231 transitions. [2018-09-19 16:00:21,769 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 231 transitions. Word has length 20 [2018-09-19 16:00:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:00:21,769 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 231 transitions. [2018-09-19 16:00:21,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:00:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 231 transitions. [2018-09-19 16:00:21,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-19 16:00:21,773 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:00:21,773 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:00:21,773 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:00:21,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1611779378, now seen corresponding path program 1 times [2018-09-19 16:00:21,775 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:00:21,775 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:00:21,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:00:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:00:22,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:00:22,310 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:00:22,310 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:00:22,318 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 16:00:22,398 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:00:22,515 INFO L303 Elim1Store]: Index analysis took 193 ms [2018-09-19 16:00:22,517 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 16:00:22,518 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:22,684 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:22,809 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:22,810 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:31 [2018-09-19 16:00:23,037 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:00:23,396 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 16:00:23,629 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:00:23,664 INFO L303 Elim1Store]: Index analysis took 265 ms [2018-09-19 16:00:23,665 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 16:00:23,666 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:23,736 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:23,879 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:23,879 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:35 [2018-09-19 16:00:26,050 WARN L178 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 30 [2018-09-19 16:00:26,082 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 16:00:26,114 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:00:26,121 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 16:00:26,121 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:26,167 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:26,240 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 16:00:26,241 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:42, output treesize:21 [2018-09-19 16:00:26,773 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:00:26,784 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:00:26,784 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:26,795 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:26,852 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:26,852 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2018-09-19 16:00:27,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-19 16:00:27,032 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-19 16:00:27,033 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:00:27,044 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:00:27,090 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:00:27,091 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:33 [2018-09-19 16:00:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:00:28,214 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:00:28,233 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:00:28,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-19 16:00:28,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-19 16:00:28,235 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-19 16:00:28,238 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:00:28,239 INFO L87 Difference]: Start difference. First operand 191 states and 231 transitions. Second operand 17 states. [2018-09-19 16:00:28,820 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:00:29,516 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:00:30,211 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:00:30,716 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:00:31,673 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:00:32,170 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:00:32,691 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:00:33,178 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-09-19 16:00:33,672 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:00:34,322 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-09-19 16:00:35,015 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:00:36,390 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:00:37,200 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:00:40,339 WARN L178 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-09-19 16:01:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:02,337 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2018-09-19 16:01:02,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-19 16:01:02,339 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2018-09-19 16:01:02,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:02,342 INFO L225 Difference]: With dead ends: 249 [2018-09-19 16:01:02,342 INFO L226 Difference]: Without dead ends: 184 [2018-09-19 16:01:02,344 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2018-09-19 16:01:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-09-19 16:01:02,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-09-19 16:01:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-19 16:01:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 216 transitions. [2018-09-19 16:01:02,366 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 216 transitions. Word has length 46 [2018-09-19 16:01:02,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:02,366 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 216 transitions. [2018-09-19 16:01:02,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-19 16:01:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 216 transitions. [2018-09-19 16:01:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:01:02,369 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:02,369 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:02,369 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:02,369 INFO L82 PathProgramCache]: Analyzing trace with hash 27978668, now seen corresponding path program 1 times [2018-09-19 16:01:02,370 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:02,370 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:01:02,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:02,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:02,547 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 16:01:02,555 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:01:02,555 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:02,560 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:02,577 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 16:01:02,577 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:01:02,618 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 16:01:02,622 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 16:01:02,623 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:02,630 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:02,642 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 16:01:02,642 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:01:03,285 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 16:01:03,285 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:03,297 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:03,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:01:03,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:01:03,298 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:01:03,298 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:01:03,299 INFO L87 Difference]: Start difference. First operand 184 states and 216 transitions. Second operand 10 states. [2018-09-19 16:01:05,086 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:01:18,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:18,867 INFO L93 Difference]: Finished difference Result 259 states and 309 transitions. [2018-09-19 16:01:18,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:01:18,868 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-09-19 16:01:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:18,874 INFO L225 Difference]: With dead ends: 259 [2018-09-19 16:01:18,874 INFO L226 Difference]: Without dead ends: 186 [2018-09-19 16:01:18,875 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-19 16:01:18,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-09-19 16:01:18,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2018-09-19 16:01:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-19 16:01:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 213 transitions. [2018-09-19 16:01:18,902 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 213 transitions. Word has length 51 [2018-09-19 16:01:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:18,903 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 213 transitions. [2018-09-19 16:01:18,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:01:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 213 transitions. [2018-09-19 16:01:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:01:18,905 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:18,905 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:18,905 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:18,906 INFO L82 PathProgramCache]: Analyzing trace with hash 708037038, now seen corresponding path program 1 times [2018-09-19 16:01:18,906 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:18,906 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 16:01:18,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:19,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:19,328 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 16:01:19,328 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:19,344 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:19,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:01:19,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:01:19,345 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:01:19,345 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:01:19,346 INFO L87 Difference]: Start difference. First operand 184 states and 213 transitions. Second operand 7 states. [2018-09-19 16:01:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:26,269 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2018-09-19 16:01:26,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:01:26,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-09-19 16:01:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:26,273 INFO L225 Difference]: With dead ends: 191 [2018-09-19 16:01:26,273 INFO L226 Difference]: Without dead ends: 188 [2018-09-19 16:01:26,274 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:01:26,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-19 16:01:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-09-19 16:01:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-09-19 16:01:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 217 transitions. [2018-09-19 16:01:26,293 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 217 transitions. Word has length 51 [2018-09-19 16:01:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:26,294 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 217 transitions. [2018-09-19 16:01:26,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:01:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 217 transitions. [2018-09-19 16:01:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:01:26,296 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:26,296 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:26,297 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:26,297 INFO L82 PathProgramCache]: Analyzing trace with hash 629085102, now seen corresponding path program 1 times [2018-09-19 16:01:26,298 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:26,298 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:01:26,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:26,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:26,727 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:26,738 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:26,739 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 16:01:26,752 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:26,771 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 16:01:26,772 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:26,788 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:26,811 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 16:01:26,812 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:01:27,135 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:27,135 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:01:27,137 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 16:01:27,149 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:27,174 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 16:01:27,175 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:27,217 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:27,267 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 16:01:27,267 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:01:27,357 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 16:01:27,367 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:01:27,373 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 16:01:27,374 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:27,388 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:27,405 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 16:01:27,406 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:01:27,709 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 16:01:27,709 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:27,722 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:27,723 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:01:27,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:01:27,724 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:01:27,724 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:01:27,724 INFO L87 Difference]: Start difference. First operand 188 states and 217 transitions. Second operand 11 states. [2018-09-19 16:01:28,906 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:01:30,209 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:01:30,423 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:01:30,740 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:01:31,466 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 16:01:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:40,346 INFO L93 Difference]: Finished difference Result 256 states and 299 transitions. [2018-09-19 16:01:40,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:01:40,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2018-09-19 16:01:40,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:40,350 INFO L225 Difference]: With dead ends: 256 [2018-09-19 16:01:40,350 INFO L226 Difference]: Without dead ends: 188 [2018-09-19 16:01:40,351 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:01:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-19 16:01:40,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-09-19 16:01:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-09-19 16:01:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 216 transitions. [2018-09-19 16:01:40,367 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 216 transitions. Word has length 51 [2018-09-19 16:01:40,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:40,367 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 216 transitions. [2018-09-19 16:01:40,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:01:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 216 transitions. [2018-09-19 16:01:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-19 16:01:40,370 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:40,370 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:40,370 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:40,371 INFO L82 PathProgramCache]: Analyzing trace with hash -724448174, now seen corresponding path program 1 times [2018-09-19 16:01:40,371 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:40,371 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 16:01:40,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:40,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:01:40,756 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-09-19 16:01:40,777 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 16:01:40,792 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 16:01:40,792 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:40,856 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:40,885 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 16:01:40,885 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-09-19 16:01:41,031 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 16:01:41,038 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 16:01:41,039 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:41,082 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:41,106 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 16:01:41,106 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:17 [2018-09-19 16:01:41,423 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:01:41,482 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 16:01:41,500 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 16:01:41,500 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:41,509 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:41,552 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 16:01:41,553 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2018-09-19 16:01:41,692 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 16:01:41,702 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 16:01:41,703 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:01:41,710 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:01:41,741 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 16:01:41,741 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:42, output treesize:27 [2018-09-19 16:01:42,581 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 34 [2018-09-19 16:01:42,846 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 16:01:42,846 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:01:42,858 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:01:42,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:01:42,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:01:42,859 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:01:42,859 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:01:42,860 INFO L87 Difference]: Start difference. First operand 188 states and 216 transitions. Second operand 14 states. [2018-09-19 16:01:43,335 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:01:44,204 WARN L178 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-19 16:01:45,354 WARN L178 SmtUtils]: Spent 925.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:01:46,903 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:01:47,179 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:01:47,653 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:01:48,549 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:01:49,043 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-09-19 16:01:49,657 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-09-19 16:01:50,241 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-09-19 16:01:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:01:59,565 INFO L93 Difference]: Finished difference Result 211 states and 239 transitions. [2018-09-19 16:01:59,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 16:01:59,569 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-09-19 16:01:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:01:59,571 INFO L225 Difference]: With dead ends: 211 [2018-09-19 16:01:59,571 INFO L226 Difference]: Without dead ends: 140 [2018-09-19 16:01:59,572 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2018-09-19 16:01:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-09-19 16:01:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-09-19 16:01:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-09-19 16:01:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2018-09-19 16:01:59,589 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 53 [2018-09-19 16:01:59,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:01:59,589 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2018-09-19 16:01:59,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:01:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2018-09-19 16:01:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-19 16:01:59,600 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:01:59,600 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:01:59,600 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:01:59,600 INFO L82 PathProgramCache]: Analyzing trace with hash -907264906, now seen corresponding path program 1 times [2018-09-19 16:01:59,601 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:01:59,601 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 16:01:59,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:01:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:01:59,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:00,082 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 16:02:00,083 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:00,095 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:00,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:02:00,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:02:00,096 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:02:00,096 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:02:00,097 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand 10 states. [2018-09-19 16:02:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:24,008 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2018-09-19 16:02:24,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:02:24,437 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2018-09-19 16:02:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:24,438 INFO L225 Difference]: With dead ends: 153 [2018-09-19 16:02:24,438 INFO L226 Difference]: Without dead ends: 150 [2018-09-19 16:02:24,439 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:02:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-09-19 16:02:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2018-09-19 16:02:24,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-19 16:02:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 155 transitions. [2018-09-19 16:02:24,446 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 155 transitions. Word has length 67 [2018-09-19 16:02:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:24,447 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 155 transitions. [2018-09-19 16:02:24,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:02:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 155 transitions. [2018-09-19 16:02:24,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-19 16:02:24,449 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:24,449 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:02:24,449 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:24,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2073812476, now seen corresponding path program 1 times [2018-09-19 16:02:24,450 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:24,450 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 16:02:24,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:02:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:24,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:24,762 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 16:02:24,769 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 16:02:24,770 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:24,775 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:24,793 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 16:02:24,794 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:02:24,873 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 16:02:24,878 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 16:02:24,879 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:24,882 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:24,891 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 16:02:24,892 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:02:25,232 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 16:02:25,233 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:25,244 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:25,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 16:02:25,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 16:02:25,245 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 16:02:25,245 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:02:25,246 INFO L87 Difference]: Start difference. First operand 143 states and 155 transitions. Second operand 14 states. [2018-09-19 16:02:28,916 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-09-19 16:02:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:02:29,501 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2018-09-19 16:02:29,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 16:02:29,502 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2018-09-19 16:02:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:02:29,504 INFO L225 Difference]: With dead ends: 152 [2018-09-19 16:02:29,504 INFO L226 Difference]: Without dead ends: 139 [2018-09-19 16:02:29,505 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2018-09-19 16:02:29,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-19 16:02:29,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-19 16:02:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-19 16:02:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2018-09-19 16:02:29,513 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 67 [2018-09-19 16:02:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:02:29,514 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2018-09-19 16:02:29,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 16:02:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2018-09-19 16:02:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-19 16:02:29,515 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:02:29,515 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:02:29,516 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:02:29,516 INFO L82 PathProgramCache]: Analyzing trace with hash -550033036, now seen corresponding path program 1 times [2018-09-19 16:02:29,516 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:02:29,516 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:02:29,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:02:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:02:33,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:02:33,951 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 16:02:33,957 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 16:02:33,958 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:33,964 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:33,979 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 16:02:33,980 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:02:34,045 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 16:02:34,051 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 16:02:34,052 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:02:34,055 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:02:34,065 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 16:02:34,065 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:02:34,386 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 16:02:34,386 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:02:34,474 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:02:34,474 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:02:34,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:02:34,475 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:02:34,475 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:02:34,475 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 11 states. [2018-09-19 16:03:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:03:00,883 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2018-09-19 16:03:01,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:03:01,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2018-09-19 16:03:01,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:03:01,334 INFO L225 Difference]: With dead ends: 174 [2018-09-19 16:03:01,335 INFO L226 Difference]: Without dead ends: 128 [2018-09-19 16:03:01,335 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:03:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-19 16:03:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2018-09-19 16:03:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-19 16:03:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2018-09-19 16:03:01,344 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 69 [2018-09-19 16:03:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:03:01,344 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2018-09-19 16:03:01,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:03:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2018-09-19 16:03:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-19 16:03:01,345 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:03:01,346 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:03:01,346 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:03:01,346 INFO L82 PathProgramCache]: Analyzing trace with hash 964772392, now seen corresponding path program 1 times [2018-09-19 16:03:01,347 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:03:01,347 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-19 16:03:01,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:03:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:03:05,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:03:11,337 WARN L178 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:18,243 WARN L178 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 16:03:18,265 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 16:03:18,265 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:03:18,362 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:03:18,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:03:18,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:03:18,363 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:03:18,363 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:03:18,363 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand 8 states. [2018-09-19 16:03:48,075 WARN L178 SmtUtils]: Spent 3.65 s on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:04:05,791 WARN L178 SmtUtils]: Spent 2.76 s on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 16:04:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:04:18,361 INFO L93 Difference]: Finished difference Result 157 states and 165 transitions. [2018-09-19 16:04:18,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:04:18,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2018-09-19 16:04:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:04:18,460 INFO L225 Difference]: With dead ends: 157 [2018-09-19 16:04:18,460 INFO L226 Difference]: Without dead ends: 126 [2018-09-19 16:04:18,460 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:04:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-09-19 16:04:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-09-19 16:04:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-09-19 16:04:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2018-09-19 16:04:18,469 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 70 [2018-09-19 16:04:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:04:18,469 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2018-09-19 16:04:18,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:04:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2018-09-19 16:04:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-19 16:04:18,471 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:04:18,471 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:04:18,471 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:04:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1424343236, now seen corresponding path program 1 times [2018-09-19 16:04:18,472 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:04:18,472 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 16:04:18,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:04:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:04:18,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:04:19,028 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 16:04:19,042 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-19 16:04:19,042 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:19,070 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:19,143 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 16:04:19,144 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:04:19,299 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 16:04:19,304 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 16:04:19,304 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:04:19,315 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:04:19,325 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 16:04:19,326 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:04:20,175 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:04:20,378 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 16:04:20,379 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:04:20,391 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:04:20,391 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-19 16:04:20,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-19 16:04:20,392 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-19 16:04:20,392 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:04:20,392 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand 17 states. [2018-09-19 16:04:22,711 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-19 16:04:23,122 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown