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_0960a_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:15:33,875 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:15:33,877 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:15:33,889 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:15:33,890 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:15:33,892 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:15:33,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:15:33,896 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:15:33,897 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:15:33,898 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:15:33,899 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:15:33,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:15:33,901 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:15:33,902 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:15:33,903 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:15:33,905 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:15:33,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:15:33,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:15:33,916 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:15:33,921 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:15:33,922 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:15:33,926 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:15:33,931 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:15:33,932 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:15:33,932 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:15:33,933 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:15:33,937 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:15:33,940 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:15:33,941 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:15:33,942 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:15:33,942 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:15:33,943 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:15:33,943 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:15:33,946 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:15:33,948 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:15:33,949 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:15:33,950 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 16:15:33,966 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:15:33,966 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:15:33,967 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:15:33,967 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:15:33,968 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:15:33,968 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:15:33,968 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:15:33,969 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:15:33,969 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:15:33,969 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:15:33,969 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:15:33,969 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:15:33,970 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:15:33,970 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:15:33,970 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:15:33,970 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:15:33,970 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:15:33,970 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:15:33,971 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:15:33,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:15:33,971 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:15:33,971 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:15:33,972 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:15:33,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:15:33,972 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:15:33,972 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:15:33,972 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:15:33,972 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:15:33,973 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:15:33,973 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:15:33,973 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:15:33,973 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:15:34,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:15:34,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:15:34,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:15:34,045 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:15:34,045 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:15:34,046 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0960a_true-unreach-call.c [2018-09-19 16:15:34,430 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9fe733b/5b2b4c01130c4aae8d7ac404fc3688e2/FLAG5ed32b3b5 [2018-09-19 16:15:34,618 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:15:34,618 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0960a_true-unreach-call.c [2018-09-19 16:15:34,628 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9fe733b/5b2b4c01130c4aae8d7ac404fc3688e2/FLAG5ed32b3b5 [2018-09-19 16:15:34,643 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9fe733b/5b2b4c01130c4aae8d7ac404fc3688e2 [2018-09-19 16:15:34,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:15:34,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:15:34,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:15:34,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:15:34,666 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:15:34,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:15:34" (1/1) ... [2018-09-19 16:15:34,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aab3209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:34, skipping insertion in model container [2018-09-19 16:15:34,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:15:34" (1/1) ... [2018-09-19 16:15:34,683 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:15:34,986 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:15:35,006 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:15:35,064 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:15:35,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35 WrapperNode [2018-09-19 16:15:35,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:15:35,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:15:35,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:15:35,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:15:35,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (1/1) ... [2018-09-19 16:15:35,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (1/1) ... [2018-09-19 16:15:35,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (1/1) ... [2018-09-19 16:15:35,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (1/1) ... [2018-09-19 16:15:35,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (1/1) ... [2018-09-19 16:15:35,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (1/1) ... [2018-09-19 16:15:35,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (1/1) ... [2018-09-19 16:15:35,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:15:35,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:15:35,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:15:35,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:15:35,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (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 16:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:15:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:15:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2018-09-19 16:15:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2018-09-19 16:15:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10 [2018-09-19 16:15:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2018-09-19 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2018-09-19 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10 [2018-09-19 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:15:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:15:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:15:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:15:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:15:35,676 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:15:35,699 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:15:35,727 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:15:41,135 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:15:41,147 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:15:41,350 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:15:46,493 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:15:46,523 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:15:46,611 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:16:05,100 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:16:05,118 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:16:05,131 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:16:07,539 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:16:07,571 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:16:07,580 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:16:07,640 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:16:07,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:16:07 BoogieIcfgContainer [2018-09-19 16:16:07,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:16:07,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:16:07,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:16:07,646 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:16:07,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:15:34" (1/3) ... [2018-09-19 16:16:07,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e451da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:16:07, skipping insertion in model container [2018-09-19 16:16:07,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:15:35" (2/3) ... [2018-09-19 16:16:07,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e451da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:16:07, skipping insertion in model container [2018-09-19 16:16:07,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:16:07" (3/3) ... [2018-09-19 16:16:07,651 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0960a_true-unreach-call.c [2018-09-19 16:16:07,661 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:16:07,670 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:16:07,716 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:16:07,717 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:16:07,717 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:16:07,717 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:16:07,718 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:16:07,718 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:16:07,718 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:16:07,718 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:16:07,718 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:16:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2018-09-19 16:16:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-19 16:16:07,749 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:16:07,750 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] [2018-09-19 16:16:07,752 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:16:07,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1720639717, now seen corresponding path program 1 times [2018-09-19 16:16:07,763 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:16:07,763 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 16:16:07,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:16:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:16:07,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:16:08,002 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 16:16:08,003 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:16:08,023 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:16:08,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:16:08,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:16:08,047 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:16:08,049 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:16:08,052 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 2 states. [2018-09-19 16:16:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:16:08,103 INFO L93 Difference]: Finished difference Result 256 states and 316 transitions. [2018-09-19 16:16:08,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:16:08,105 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-09-19 16:16:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:16:08,119 INFO L225 Difference]: With dead ends: 256 [2018-09-19 16:16:08,120 INFO L226 Difference]: Without dead ends: 128 [2018-09-19 16:16:08,125 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 16:16:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-19 16:16:08,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-19 16:16:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-19 16:16:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2018-09-19 16:16:08,180 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 23 [2018-09-19 16:16:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:16:08,180 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2018-09-19 16:16:08,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:16:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2018-09-19 16:16:08,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-19 16:16:08,183 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:16:08,184 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 16:16:08,184 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:16:08,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1808847980, now seen corresponding path program 1 times [2018-09-19 16:16:08,186 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:16:08,186 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:16:08,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:16:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:16:08,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:16:08,504 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 16:16:08,511 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 16:16:08,511 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:16:08,531 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:16:08,547 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 16:16:08,547 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:16:08,671 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 16:16:08,688 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 16:16:08,689 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:16:08,715 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:16:08,793 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 16:16:08,793 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:16:09,145 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 16:16:09,146 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:16:09,161 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:16:09,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:16:09,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:16:09,164 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:16:09,164 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:16:09,164 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand 8 states. [2018-09-19 16:16:09,892 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:16:18,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:16:18,053 INFO L93 Difference]: Finished difference Result 172 states and 187 transitions. [2018-09-19 16:16:18,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-19 16:16:18,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2018-09-19 16:16:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:16:18,058 INFO L225 Difference]: With dead ends: 172 [2018-09-19 16:16:18,059 INFO L226 Difference]: Without dead ends: 130 [2018-09-19 16:16:18,060 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:16:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-09-19 16:16:18,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2018-09-19 16:16:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-19 16:16:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2018-09-19 16:16:18,077 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 49 [2018-09-19 16:16:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:16:18,078 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2018-09-19 16:16:18,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:16:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2018-09-19 16:16:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-19 16:16:18,080 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:16:18,080 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 16:16:18,081 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:16:18,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1401543797, now seen corresponding path program 1 times [2018-09-19 16:16:18,082 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:16:18,082 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:16:18,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:16:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:16:19,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:16:22,904 WARN L178 SmtUtils]: Spent 3.72 s on a formula simplification that was a NOOP. DAG size: 13 [2018-09-19 16:16:23,012 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:16:23,013 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:16:23,015 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 16:16:23,025 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:16:23,061 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 16:16:23,062 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:16:23,080 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:16:23,105 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 16:16:23,105 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:16:23,367 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2018-09-19 16:16:23,375 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:16:23,389 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2018-09-19 16:16:23,390 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:16:23,413 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:16:23,462 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 16:16:23,463 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:32 [2018-09-19 16:16:25,583 WARN L178 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:16:25,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2018-09-19 16:16:25,608 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:16:25,614 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 11 [2018-09-19 16:16:25,615 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:16:25,633 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:16:25,652 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:16:25,652 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:39, output treesize:18 [2018-09-19 16:16:26,306 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 16:16:26,307 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:16:26,331 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:16:26,331 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-19 16:16:26,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-19 16:16:26,332 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-19 16:16:26,333 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:16:26,333 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand 15 states. [2018-09-19 16:16:38,429 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-19 16:16:38,718 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:16:39,710 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:16:40,016 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:16:40,651 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:16:44,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:16:44,648 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2018-09-19 16:16:44,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 16:16:44,649 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2018-09-19 16:16:44,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:16:44,651 INFO L225 Difference]: With dead ends: 135 [2018-09-19 16:16:44,651 INFO L226 Difference]: Without dead ends: 128 [2018-09-19 16:16:44,653 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2018-09-19 16:16:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-19 16:16:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-19 16:16:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-19 16:16:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2018-09-19 16:16:44,666 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 49 [2018-09-19 16:16:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:16:44,666 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2018-09-19 16:16:44,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-19 16:16:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2018-09-19 16:16:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:16:44,668 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:16:44,669 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 16:16:44,669 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:16:44,669 INFO L82 PathProgramCache]: Analyzing trace with hash -182050664, now seen corresponding path program 1 times [2018-09-19 16:16:44,670 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:16:44,670 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 16:16:44,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:16:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:16:45,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:16:45,633 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 16:16:45,640 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 16:16:45,640 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:16:45,647 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:16:45,665 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 16:16:45,665 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:16:45,708 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 16:16:45,714 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 16:16:45,714 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:16:45,719 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:16:45,731 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 16:16:45,731 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:16:45,925 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 16:16:45,925 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:16:45,950 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:16:45,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:16:45,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:16:45,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:16:45,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:16:45,951 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand 8 states. [2018-09-19 16:16:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:16:56,960 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2018-09-19 16:16:56,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:16:56,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2018-09-19 16:16:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:16:56,963 INFO L225 Difference]: With dead ends: 153 [2018-09-19 16:16:56,964 INFO L226 Difference]: Without dead ends: 128 [2018-09-19 16:16:56,964 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-09-19 16:16:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-19 16:16:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-19 16:16:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-19 16:16:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2018-09-19 16:16:56,977 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 50 [2018-09-19 16:16:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:16:56,977 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2018-09-19 16:16:56,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:16:56,978 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2018-09-19 16:16:56,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-19 16:16:56,980 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:16:56,980 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:16:56,980 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:16:56,981 INFO L82 PathProgramCache]: Analyzing trace with hash -222412833, now seen corresponding path program 1 times [2018-09-19 16:16:56,981 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:16:56,981 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:16:56,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:16:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:16:57,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:17:01,685 WARN L178 SmtUtils]: Spent 2.95 s on a formula simplification that was a NOOP. DAG size: 10 [2018-09-19 16:17:01,950 INFO L303 Elim1Store]: Index analysis took 262 ms [2018-09-19 16:17:01,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-19 16:17:02,169 INFO L303 Elim1Store]: Index analysis took 217 ms [2018-09-19 16:17:02,170 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 16:17:02,172 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:02,341 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:04,984 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 16:17:04,985 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:28 [2018-09-19 16:17:07,840 WARN L178 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:17:07,942 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 16:17:08,207 INFO L303 Elim1Store]: Index analysis took 263 ms [2018-09-19 16:17:08,207 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 16:17:08,208 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:17:08,595 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:17:09,394 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 16:17:09,394 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:22 [2018-09-19 16:17:12,894 WARN L178 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 19 [2018-09-19 16:17:16,818 WARN L178 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 19 [2018-09-19 16:17:19,874 WARN L178 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-19 16:17:19,894 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 16:17:19,894 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:17:19,916 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:17:19,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:17:19,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:17:19,917 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:17:19,917 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:17:19,918 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand 10 states. [2018-09-19 16:17:40,640 WARN L178 SmtUtils]: Spent 3.94 s on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 16:17:46,771 WARN L178 SmtUtils]: Spent 4.23 s on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:17:53,103 WARN L178 SmtUtils]: Spent 4.58 s on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:18:00,996 WARN L178 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 31 [2018-09-19 16:18:05,053 WARN L178 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 16:18:12,190 WARN L178 SmtUtils]: Spent 4.83 s on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 16:18:32,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:18:32,671 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2018-09-19 16:18:32,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:18:32,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2018-09-19 16:18:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:18:32,674 INFO L225 Difference]: With dead ends: 153 [2018-09-19 16:18:32,674 INFO L226 Difference]: Without dead ends: 128 [2018-09-19 16:18:32,675 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:18:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-19 16:18:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-19 16:18:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-19 16:18:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2018-09-19 16:18:32,686 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 61 [2018-09-19 16:18:32,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:18:32,686 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2018-09-19 16:18:32,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:18:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2018-09-19 16:18:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-09-19 16:18:32,689 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:18:32,689 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:18:32,689 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:18:32,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1199754402, now seen corresponding path program 1 times [2018-09-19 16:18:32,690 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:18:32,690 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 16:18:32,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:18:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:18:34,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:18:36,385 WARN L178 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 15 [2018-09-19 16:18:36,697 INFO L303 Elim1Store]: Index analysis took 308 ms [2018-09-19 16:18:36,698 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 16:18:36,927 INFO L303 Elim1Store]: Index analysis took 227 ms [2018-09-19 16:18:36,927 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 16:18:36,928 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:37,243 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:40,323 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 16:18:40,323 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:33 [2018-09-19 16:18:42,616 WARN L178 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 30 [2018-09-19 16:18:42,844 INFO L303 Elim1Store]: Index analysis took 224 ms [2018-09-19 16:18:42,845 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 16:18:43,066 INFO L303 Elim1Store]: Index analysis took 219 ms [2018-09-19 16:18:43,067 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 16:18:43,067 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:43,346 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:45,013 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 16:18:45,013 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:27 [2018-09-19 16:18:47,887 WARN L178 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:18:50,729 WARN L178 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 24 [2018-09-19 16:18:53,925 WARN L178 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 33 [2018-09-19 16:18:54,598 INFO L303 Elim1Store]: Index analysis took 663 ms [2018-09-19 16:18:54,599 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 31 treesize of output 28 [2018-09-19 16:18:54,761 INFO L303 Elim1Store]: Index analysis took 160 ms [2018-09-19 16:18:54,762 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 28 treesize of output 27 [2018-09-19 16:18:54,762 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:18:55,138 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:18:58,693 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 16:18:58,694 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:49, output treesize:45 [2018-09-19 16:19:02,513 WARN L178 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:19:02,752 INFO L303 Elim1Store]: Index analysis took 235 ms [2018-09-19 16:19:02,752 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 73 treesize of output 59 [2018-09-19 16:19:02,932 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:19:03,032 INFO L303 Elim1Store]: Index analysis took 278 ms [2018-09-19 16:19:03,034 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 76 [2018-09-19 16:19:03,035 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:03,664 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:05,479 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-19 16:19:05,479 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:90, output treesize:87 [2018-09-19 16:19:08,252 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:19:10,769 WARN L178 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-19 16:19:13,282 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 16:19:13,288 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 16:19:13,289 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:13,297 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:13,326 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 16:19:13,326 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2018-09-19 16:19:15,424 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 16:19:15,436 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 16:19:15,436 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:19:15,442 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:19:15,463 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 16:19:15,463 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:19 [2018-09-19 16:19:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:19:21,524 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:19:21,555 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:19:21,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-09-19 16:19:21,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-19 16:19:21,556 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-19 16:19:21,557 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2018-09-19 16:19:21,557 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand 19 states. [2018-09-19 16:19:40,328 WARN L178 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 32 [2018-09-19 16:19:45,103 WARN L178 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:19:51,377 WARN L178 SmtUtils]: Spent 3.68 s on a formula simplification that was a NOOP. DAG size: 40 [2018-09-19 16:19:55,550 WARN L178 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 36 [2018-09-19 16:20:00,005 WARN L178 SmtUtils]: Spent 913.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-19 16:20:08,693 WARN L178 SmtUtils]: Spent 3.48 s on a formula simplification that was a NOOP. DAG size: 43 [2018-09-19 16:20:16,780 WARN L178 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 53 Received shutdown request... [2018-09-19 16:20:24,844 WARN L186 SmtUtils]: Removed 2 from assertion stack [2018-09-19 16:20:24,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-19 16:20:24,844 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 16:20:24,849 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 16:20:24,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:20:24 BoogieIcfgContainer [2018-09-19 16:20:24,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:20:24,850 INFO L168 Benchmark]: Toolchain (without parser) took 290195.29 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:20:24,851 INFO L168 Benchmark]: CDTParser took 0.23 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 16:20:24,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.45 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:20:24,852 INFO L168 Benchmark]: Boogie Preprocessor took 68.44 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:20:24,853 INFO L168 Benchmark]: RCFGBuilder took 32426.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -755.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2018-09-19 16:20:24,853 INFO L168 Benchmark]: TraceAbstraction took 257206.71 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 124.3 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -79.0 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:20:24,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 487.45 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.44 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 32426.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -755.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257206.71 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 124.3 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -79.0 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (128states) and FLOYD_HOARE automaton (currently 15 states, 19 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 57. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. TIMEOUT Result, 257.1s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 174.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 688 SDtfs, 430 SDslu, 3788 SDs, 0 SdLazy, 887 SolverSat, 42 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 89.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 269 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 130.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 78.6s InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 321 ConstructedInterpolants, 95 QuantifiedInterpolants, 265531 SizeOfPredicates, 52 NumberOfNonLiveVariables, 942 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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