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_0873a_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:10:02,373 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:10:02,375 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:10:02,387 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:10:02,387 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:10:02,389 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:10:02,391 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:10:02,393 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:10:02,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:10:02,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:10:02,400 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:10:02,401 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:10:02,402 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:10:02,403 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:10:02,404 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:10:02,404 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:10:02,408 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:10:02,410 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:10:02,420 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:10:02,424 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:10:02,425 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:10:02,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:10:02,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:10:02,432 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:10:02,432 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:10:02,433 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:10:02,434 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:10:02,435 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:10:02,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:10:02,437 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:10:02,437 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:10:02,438 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:10:02,438 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:10:02,441 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:10:02,442 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:10:02,443 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:10:02,443 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 16:10:02,478 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:10:02,478 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:10:02,479 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:10:02,479 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:10:02,480 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:10:02,480 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:10:02,480 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:10:02,480 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:10:02,481 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:10:02,481 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:10:02,481 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:10:02,481 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:10:02,482 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:10:02,483 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:10:02,483 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:10:02,483 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:10:02,483 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:10:02,484 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:10:02,485 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:10:02,485 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:10:02,485 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:10:02,485 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:10:02,485 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:10:02,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:10:02,486 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:10:02,486 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:10:02,486 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:10:02,486 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:10:02,487 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:10:02,487 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:10:02,487 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:10:02,488 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:10:02,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:10:02,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:10:02,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:10:02,555 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:10:02,556 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:10:02,557 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0873a_true-unreach-call.c [2018-09-19 16:10:02,907 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a23b8bcfa/ef5722c896cd4e5fbfe02bcbd4d6aab3/FLAG4c86cf81f [2018-09-19 16:10:03,159 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:10:03,160 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0873a_true-unreach-call.c [2018-09-19 16:10:03,180 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a23b8bcfa/ef5722c896cd4e5fbfe02bcbd4d6aab3/FLAG4c86cf81f [2018-09-19 16:10:03,196 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a23b8bcfa/ef5722c896cd4e5fbfe02bcbd4d6aab3 [2018-09-19 16:10:03,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:10:03,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:10:03,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:10:03,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:10:03,217 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:10:03,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:03,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120f765c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03, skipping insertion in model container [2018-09-19 16:10:03,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:03,234 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:10:03,662 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:10:03,687 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:10:03,842 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:10:03,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03 WrapperNode [2018-09-19 16:10:03,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:10:03,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:10:03,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:10:03,906 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:10:03,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:03,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:03,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:03,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:04,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:04,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:04,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (1/1) ... [2018-09-19 16:10:04,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:10:04,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:10:04,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:10:04,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:10:04,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:10:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:10:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:10:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2018-09-19 16:10:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_double [2018-09-19 16:10:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2018-09-19 16:10:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 16:10:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_pow [2018-09-19 16:10:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:10:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:10:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:10:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2018-09-19 16:10:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:10:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:10:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:10:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:10:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:10:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:10:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_double [2018-09-19 16:10:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2018-09-19 16:10:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 16:10:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_pow [2018-09-19 16:10:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:10:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:10:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:10:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:10:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:10:04,760 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:05,399 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:05,431 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:05,991 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:06,004 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:07,032 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:08,184 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:08,265 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:08,297 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:08,324 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:08,344 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:08,393 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:08,656 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:11,144 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:11,194 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:13,938 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:16,248 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:18,680 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:19,721 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:21,938 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:21,974 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:22,028 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:22,157 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:22,185 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:23,663 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:30,271 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:30,280 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:30,312 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:30,331 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:30,615 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:33,595 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:33,627 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:33,747 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:51,439 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:52,720 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:52,731 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:57,822 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:57,877 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:57,958 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:58,165 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:58,212 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:58,276 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:10:59,303 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:10:59,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:10:59 BoogieIcfgContainer [2018-09-19 16:10:59,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:10:59,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:10:59,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:10:59,309 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:10:59,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:10:03" (1/3) ... [2018-09-19 16:10:59,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479e192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:10:59, skipping insertion in model container [2018-09-19 16:10:59,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:10:03" (2/3) ... [2018-09-19 16:10:59,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479e192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:10:59, skipping insertion in model container [2018-09-19 16:10:59,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:10:59" (3/3) ... [2018-09-19 16:10:59,314 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0873a_true-unreach-call.c [2018-09-19 16:10:59,324 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:10:59,334 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:10:59,392 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:10:59,393 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:10:59,393 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:10:59,393 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:10:59,393 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:10:59,394 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:10:59,394 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:10:59,394 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:10:59,394 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:10:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states. [2018-09-19 16:10:59,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 16:10:59,437 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:10:59,438 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:10:59,441 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:10:59,448 INFO L82 PathProgramCache]: Analyzing trace with hash 425131288, now seen corresponding path program 1 times [2018-09-19 16:10:59,454 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:10:59,455 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 16:10:59,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:10:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:10:59,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:10:59,740 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 16:10:59,743 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:10:59,759 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:10:59,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:10:59,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:10:59,781 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:10:59,781 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:10:59,784 INFO L87 Difference]: Start difference. First operand 494 states. Second operand 2 states. [2018-09-19 16:10:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:10:59,896 INFO L93 Difference]: Finished difference Result 980 states and 1264 transitions. [2018-09-19 16:10:59,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:10:59,898 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-19 16:10:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:10:59,920 INFO L225 Difference]: With dead ends: 980 [2018-09-19 16:10:59,921 INFO L226 Difference]: Without dead ends: 490 [2018-09-19 16:10:59,931 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 16:10:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-09-19 16:11:00,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2018-09-19 16:11:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2018-09-19 16:11:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 570 transitions. [2018-09-19 16:11:00,017 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 570 transitions. Word has length 17 [2018-09-19 16:11:00,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:11:00,018 INFO L480 AbstractCegarLoop]: Abstraction has 490 states and 570 transitions. [2018-09-19 16:11:00,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:11:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 570 transitions. [2018-09-19 16:11:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-19 16:11:00,020 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:11:00,020 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] [2018-09-19 16:11:00,020 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:11:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1962425380, now seen corresponding path program 1 times [2018-09-19 16:11:00,022 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:11:00,022 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 16:11:00,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:11:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:11:00,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:11:00,396 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 14 treesize of output 11 [2018-09-19 16:11:00,415 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 16:11:00,416 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:11:00,446 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:11:00,477 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 16:11:00,478 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:11:00,560 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 16:11:00,572 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 16:11:00,572 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:11:00,576 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:11:00,589 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 16:11:00,590 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:11:00,998 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 16:11:00,998 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:11:01,019 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:11:01,019 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:11:01,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:11:01,024 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:11:01,024 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:11:01,024 INFO L87 Difference]: Start difference. First operand 490 states and 570 transitions. Second operand 9 states. [2018-09-19 16:11:01,990 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:11:26,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:11:26,156 INFO L93 Difference]: Finished difference Result 498 states and 577 transitions. [2018-09-19 16:11:26,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:11:26,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-09-19 16:11:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:11:26,165 INFO L225 Difference]: With dead ends: 498 [2018-09-19 16:11:26,165 INFO L226 Difference]: Without dead ends: 492 [2018-09-19 16:11:26,167 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:11:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2018-09-19 16:11:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2018-09-19 16:11:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2018-09-19 16:11:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 569 transitions. [2018-09-19 16:11:26,207 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 569 transitions. Word has length 43 [2018-09-19 16:11:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:11:26,208 INFO L480 AbstractCegarLoop]: Abstraction has 490 states and 569 transitions. [2018-09-19 16:11:26,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:11:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 569 transitions. [2018-09-19 16:11:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-19 16:11:26,210 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:11:26,210 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:11:26,211 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:11:26,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1609276936, now seen corresponding path program 1 times [2018-09-19 16:11:26,212 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:11:26,212 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:11:26,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:11:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:11:26,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:11:26,642 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 16:11:26,643 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:11:26,662 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:11:26,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 16:11:26,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 16:11:26,663 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 16:11:26,663 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:11:26,663 INFO L87 Difference]: Start difference. First operand 490 states and 569 transitions. Second operand 6 states. [2018-09-19 16:11:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:11:56,068 INFO L93 Difference]: Finished difference Result 565 states and 652 transitions. [2018-09-19 16:11:56,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 16:11:56,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2018-09-19 16:11:56,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:11:56,074 INFO L225 Difference]: With dead ends: 565 [2018-09-19 16:11:56,074 INFO L226 Difference]: Without dead ends: 559 [2018-09-19 16:11:56,075 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:11:56,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2018-09-19 16:11:56,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 490. [2018-09-19 16:11:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2018-09-19 16:11:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 567 transitions. [2018-09-19 16:11:56,105 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 567 transitions. Word has length 45 [2018-09-19 16:11:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:11:56,106 INFO L480 AbstractCegarLoop]: Abstraction has 490 states and 567 transitions. [2018-09-19 16:11:56,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 16:11:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 567 transitions. [2018-09-19 16:11:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-19 16:11:56,108 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:11:56,108 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:11:56,108 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:11:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1580647785, now seen corresponding path program 1 times [2018-09-19 16:11:56,109 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:11:56,110 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 16:11:56,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:11:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:11:56,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:11:57,328 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:11:57,331 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:11:57,332 INFO L303 Elim1Store]: Index analysis took 824 ms [2018-09-19 16:11:57,333 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 16:11:57,355 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:11:57,393 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 16:11:57,394 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:11:57,437 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:11:57,812 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 16:11:57,813 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:31 [2018-09-19 16:11:58,016 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:11:58,332 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:11:58,346 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:11:58,348 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 16:11:58,391 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:11:58,418 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 16:11:58,419 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:11:58,525 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:11:58,748 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 16:11:58,748 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:66, output treesize:58 [2018-09-19 16:11:58,891 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 16:11:58,915 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:11:58,923 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 16:11:58,924 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:11:58,990 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:11:59,077 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 16:11:59,077 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:21 [2018-09-19 16:11:59,445 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-19 16:11:59,469 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:11:59,470 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:11:59,471 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 16:11:59,489 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:11:59,523 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 16:11:59,525 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:11:59,559 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:11:59,737 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 16:11:59,737 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:53, output treesize:45 [2018-09-19 16:12:00,283 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:12:00,286 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:12:00,288 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 16:12:00,304 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:12:00,325 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 16:12:00,326 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:12:00,431 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:12:00,524 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-09-19 16:12:00,525 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:80, output treesize:72 [2018-09-19 16:12:00,707 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 16:12:00,717 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:12:00,723 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 16:12:00,724 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:12:00,744 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:12:00,795 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 16:12:00,795 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:61, output treesize:35 [2018-09-19 16:12:01,892 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 31 [2018-09-19 16:12:01,924 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 16:12:01,924 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:12:01,948 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:12:01,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-19 16:12:01,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-19 16:12:01,950 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-19 16:12:01,950 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:12:01,950 INFO L87 Difference]: Start difference. First operand 490 states and 567 transitions. Second operand 16 states. [2018-09-19 16:12:02,898 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:12:05,231 WARN L178 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:12:05,672 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-19 16:12:07,586 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:12:08,581 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:12:09,153 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-09-19 16:12:09,639 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:12:10,245 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:12:10,828 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-09-19 16:12:11,491 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-09-19 16:12:12,084 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:12:12,513 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-09-19 16:12:17,554 WARN L178 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-09-19 16:13:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:13:27,625 INFO L93 Difference]: Finished difference Result 600 states and 690 transitions. [2018-09-19 16:13:27,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-19 16:13:27,627 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2018-09-19 16:13:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:13:27,630 INFO L225 Difference]: With dead ends: 600 [2018-09-19 16:13:27,631 INFO L226 Difference]: Without dead ends: 593 [2018-09-19 16:13:27,632 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2018-09-19 16:13:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2018-09-19 16:13:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 489. [2018-09-19 16:13:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-09-19 16:13:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 565 transitions. [2018-09-19 16:13:27,664 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 565 transitions. Word has length 45 [2018-09-19 16:13:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:13:27,664 INFO L480 AbstractCegarLoop]: Abstraction has 489 states and 565 transitions. [2018-09-19 16:13:27,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-19 16:13:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 565 transitions. [2018-09-19 16:13:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-19 16:13:27,671 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:13:27,671 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] [2018-09-19 16:13:27,672 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:13:27,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1131981993, now seen corresponding path program 1 times [2018-09-19 16:13:27,672 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:13:27,672 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:13:27,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:13:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:13:28,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:13:28,887 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 16:13:28,894 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 16:13:28,895 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:13:28,902 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:13:28,922 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 16:13:28,922 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:13:28,985 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 16:13:28,997 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 16:13:28,997 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:13:29,001 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:13:29,015 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 16:13:29,016 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:13:29,204 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 16:13:29,204 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:13:29,235 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:13:29,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:13:29,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:13:29,236 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:13:29,237 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:13:29,237 INFO L87 Difference]: Start difference. First operand 489 states and 565 transitions. Second operand 8 states. [2018-09-19 16:13:29,734 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:13:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:13:44,987 INFO L93 Difference]: Finished difference Result 735 states and 852 transitions. [2018-09-19 16:13:44,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:13:44,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2018-09-19 16:13:44,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:13:44,992 INFO L225 Difference]: With dead ends: 735 [2018-09-19 16:13:44,992 INFO L226 Difference]: Without dead ends: 421 [2018-09-19 16:13:44,994 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:13:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-09-19 16:13:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2018-09-19 16:13:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-09-19 16:13:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 472 transitions. [2018-09-19 16:13:45,019 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 472 transitions. Word has length 49 [2018-09-19 16:13:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:13:45,020 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 472 transitions. [2018-09-19 16:13:45,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:13:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 472 transitions. [2018-09-19 16:13:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:13:45,021 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:13:45,021 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:13:45,022 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:13:45,022 INFO L82 PathProgramCache]: Analyzing trace with hash 590234003, now seen corresponding path program 1 times [2018-09-19 16:13:45,022 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:13:45,022 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 16:13:45,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:13:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:13:46,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:13:46,243 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 16:13:46,250 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 16:13:46,250 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:13:46,256 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:13:46,275 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 16:13:46,275 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:13:46,336 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 16:13:46,356 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 16:13:46,356 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:13:46,375 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:13:46,388 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 16:13:46,388 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:13:46,781 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 16:13:46,782 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:13:46,806 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:13:46,806 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:13:46,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:13:46,807 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:13:46,807 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:13:46,807 INFO L87 Difference]: Start difference. First operand 419 states and 472 transitions. Second operand 9 states. [2018-09-19 16:13:47,364 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:13:47,696 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:13:48,524 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 16:14:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:14:15,864 INFO L93 Difference]: Finished difference Result 490 states and 565 transitions. [2018-09-19 16:14:15,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:14:15,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-09-19 16:14:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:14:15,910 INFO L225 Difference]: With dead ends: 490 [2018-09-19 16:14:15,910 INFO L226 Difference]: Without dead ends: 462 [2018-09-19 16:14:15,911 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:14:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2018-09-19 16:14:15,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 431. [2018-09-19 16:14:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-09-19 16:14:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 486 transitions. [2018-09-19 16:14:15,943 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 486 transitions. Word has length 50 [2018-09-19 16:14:15,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:14:15,943 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 486 transitions. [2018-09-19 16:14:15,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:14:15,944 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 486 transitions. [2018-09-19 16:14:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:14:15,945 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:14:15,945 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:14:15,945 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:14:15,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1150866178, now seen corresponding path program 1 times [2018-09-19 16:14:15,946 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:14:15,946 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 16:14:15,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:14:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:14:16,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:14:16,209 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 16:14:16,218 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 16:14:16,218 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:14:16,224 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:14:16,244 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 16:14:16,245 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:14:16,287 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 16:14:16,292 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 16:14:16,292 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:14:16,296 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:14:16,307 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 16:14:16,308 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:14:16,589 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 16:14:16,590 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:14:16,602 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:14:16,603 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:14:16,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:14:16,604 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:14:16,604 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:14:16,604 INFO L87 Difference]: Start difference. First operand 431 states and 486 transitions. Second operand 9 states. [2018-09-19 16:14:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:14:37,571 INFO L93 Difference]: Finished difference Result 717 states and 795 transitions. [2018-09-19 16:14:37,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:14:37,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-09-19 16:14:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:14:37,575 INFO L225 Difference]: With dead ends: 717 [2018-09-19 16:14:37,576 INFO L226 Difference]: Without dead ends: 514 [2018-09-19 16:14:37,577 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:14:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2018-09-19 16:14:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 411. [2018-09-19 16:14:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-09-19 16:14:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 457 transitions. [2018-09-19 16:14:37,608 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 457 transitions. Word has length 52 [2018-09-19 16:14:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:14:37,609 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 457 transitions. [2018-09-19 16:14:37,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:14:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 457 transitions. [2018-09-19 16:14:37,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:14:37,610 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:14:37,611 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:14:37,611 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:14:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash -947575034, now seen corresponding path program 1 times [2018-09-19 16:14:37,612 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:14:37,612 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 16:14:37,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:14:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:14:37,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:14:37,965 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:14:37,968 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:14:37,969 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2018-09-19 16:14:37,977 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:14:37,996 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 16:14:37,996 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:14:38,072 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:14:38,096 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 16:14:38,096 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:14:38,244 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:14:38,245 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:14:38,246 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 16:14:38,256 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:14:38,314 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 16:14:38,315 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:14:38,351 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:14:38,404 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 16:14:38,404 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:14:38,486 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 16:14:38,495 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:14:38,500 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 16:14:38,501 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:14:38,539 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:14:38,560 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 16:14:38,561 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:14:38,909 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 16:14:38,909 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:14:38,922 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:14:38,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:14:38,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:14:38,924 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:14:38,924 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:14:38,924 INFO L87 Difference]: Start difference. First operand 411 states and 457 transitions. Second operand 11 states. [2018-09-19 16:14:40,585 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:14:40,956 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 31 Received shutdown request... [2018-09-19 16:14:42,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:14:42,593 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 16:14:42,598 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 16:14:42,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:14:42 BoogieIcfgContainer [2018-09-19 16:14:42,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:14:42,600 INFO L168 Benchmark]: Toolchain (without parser) took 279392.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 886.6 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -220.3 MB). Peak memory consumption was 666.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:14:42,601 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:14:42,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-19 16:14:42,602 INFO L168 Benchmark]: Boogie Preprocessor took 145.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:14:42,602 INFO L168 Benchmark]: RCFGBuilder took 55253.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -723.3 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2018-09-19 16:14:42,603 INFO L168 Benchmark]: TraceAbstraction took 223293.16 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 121.1 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 471.3 MB). Peak memory consumption was 592.4 MB. Max. memory is 7.1 GB. [2018-09-19 16:14:42,607 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 694.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 55253.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -723.3 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223293.16 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 121.1 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 471.3 MB). Peak memory consumption was 592.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 576]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 576). Cancelled while BasicCegarLoop was constructing difference of abstraction (411states) and FLOYD_HOARE automaton (currently 14 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (94 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 494 locations, 1 error locations. TIMEOUT Result, 223.2s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 209.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4043 SDtfs, 5116 SDslu, 18663 SDs, 0 SdLazy, 2617 SolverSat, 104 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 179.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 287 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=494occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 311 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 345 ConstructedInterpolants, 179 QuantifiedInterpolants, 200976 SizeOfPredicates, 64 NumberOfNonLiveVariables, 1592 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown