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_0870b_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:09:04,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:09:04,033 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:09:04,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:09:04,052 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:09:04,053 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:09:04,056 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:09:04,058 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:09:04,061 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:09:04,062 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:09:04,070 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:09:04,070 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:09:04,071 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:09:04,072 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:09:04,073 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:09:04,076 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:09:04,077 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:09:04,080 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:09:04,082 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:09:04,086 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:09:04,087 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:09:04,089 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:09:04,092 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:09:04,092 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:09:04,092 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:09:04,095 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:09:04,096 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:09:04,096 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:09:04,097 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:09:04,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:09:04,100 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:09:04,102 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:09:04,102 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:09:04,102 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:09:04,103 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:09:04,104 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:09:04,104 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 16:09:04,132 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:09:04,133 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:09:04,134 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:09:04,134 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:09:04,137 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:09:04,138 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:09:04,138 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:09:04,138 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:09:04,138 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:09:04,139 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:09:04,139 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:09:04,139 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:09:04,139 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:09:04,139 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:09:04,140 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:09:04,140 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:09:04,140 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:09:04,140 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:09:04,140 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:09:04,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:09:04,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:09:04,141 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:09:04,141 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:09:04,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:09:04,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:09:04,142 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:09:04,142 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:09:04,142 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:09:04,143 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:09:04,143 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:09:04,143 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:09:04,143 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:09:04,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:09:04,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:09:04,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:09:04,211 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:09:04,211 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:09:04,212 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0870b_true-unreach-call.c [2018-09-19 16:09:04,574 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adac76ec/1599549aba3349cea8a9a5a28119b47f/FLAGf91aa2975 [2018-09-19 16:09:04,781 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:09:04,782 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0870b_true-unreach-call.c [2018-09-19 16:09:04,794 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adac76ec/1599549aba3349cea8a9a5a28119b47f/FLAGf91aa2975 [2018-09-19 16:09:04,809 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adac76ec/1599549aba3349cea8a9a5a28119b47f [2018-09-19 16:09:04,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:09:04,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:09:04,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:09:04,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:09:04,831 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:09:04,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:09:04" (1/1) ... [2018-09-19 16:09:04,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6d7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:04, skipping insertion in model container [2018-09-19 16:09:04,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:09:04" (1/1) ... [2018-09-19 16:09:04,847 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:09:05,257 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:09:05,280 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:09:05,457 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:09:05,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05 WrapperNode [2018-09-19 16:09:05,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:09:05,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:09:05,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:09:05,519 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:09:05,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (1/1) ... [2018-09-19 16:09:05,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (1/1) ... [2018-09-19 16:09:05,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (1/1) ... [2018-09-19 16:09:05,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (1/1) ... [2018-09-19 16:09:05,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (1/1) ... [2018-09-19 16:09:05,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (1/1) ... [2018-09-19 16:09:05,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (1/1) ... [2018-09-19 16:09:05,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:09:05,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:09:05,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:09:05,636 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:09:05,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (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 16:09:05,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:09:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:09:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2018-09-19 16:09:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_double [2018-09-19 16:09:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2018-09-19 16:09:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-09-19 16:09:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_pow [2018-09-19 16:09:05,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-19 16:09:05,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:09:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:09:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-19 16:09:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2018-09-19 16:09:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:09:05,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-19 16:09:05,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:09:05,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:09:05,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:09:05,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-19 16:09:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_double [2018-09-19 16:09:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2018-09-19 16:09:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-09-19 16:09:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_pow [2018-09-19 16:09:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-19 16:09:05,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:09:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:09:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:09:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:09:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-19 16:09:06,338 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:06,796 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:06,821 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:07,279 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:07,309 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:08,310 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:09,420 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:09,526 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:09,541 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:09,604 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:09,619 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:09,645 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:09,845 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:12,357 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:12,395 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:15,046 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:17,268 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:19,627 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:20,607 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:22,880 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:22,912 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:22,922 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:22,969 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:22,980 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:25,086 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:31,692 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:31,702 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:31,743 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:31,822 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:32,275 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:35,400 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:35,411 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:35,486 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:51,214 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:52,097 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:52,138 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:52,462 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:56,199 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:56,252 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:56,319 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:56,362 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:56,478 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:09:58,699 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:09:58,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:09:58 BoogieIcfgContainer [2018-09-19 16:09:58,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:09:58,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:09:58,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:09:58,704 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:09:58,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:09:04" (1/3) ... [2018-09-19 16:09:58,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d64660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:09:58, skipping insertion in model container [2018-09-19 16:09:58,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:09:05" (2/3) ... [2018-09-19 16:09:58,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d64660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:09:58, skipping insertion in model container [2018-09-19 16:09:58,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:09:58" (3/3) ... [2018-09-19 16:09:58,708 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0870b_true-unreach-call.c [2018-09-19 16:09:58,719 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:09:58,729 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:09:58,782 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:09:58,783 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:09:58,783 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:09:58,783 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:09:58,783 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:09:58,784 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:09:58,784 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:09:58,784 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:09:58,784 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:09:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states. [2018-09-19 16:09:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-19 16:09:58,825 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:09:58,826 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] [2018-09-19 16:09:58,829 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:09:58,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1207701032, now seen corresponding path program 1 times [2018-09-19 16:09:58,840 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:09:58,841 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 16:09:58,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:09:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:09:59,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:09:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:09:59,101 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:09:59,116 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:09:59,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:09:59,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:09:59,132 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:09:59,133 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:09:59,135 INFO L87 Difference]: Start difference. First operand 500 states. Second operand 2 states. [2018-09-19 16:09:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:09:59,224 INFO L93 Difference]: Finished difference Result 991 states and 1276 transitions. [2018-09-19 16:09:59,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:09:59,226 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-19 16:09:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:09:59,253 INFO L225 Difference]: With dead ends: 991 [2018-09-19 16:09:59,253 INFO L226 Difference]: Without dead ends: 495 [2018-09-19 16:09:59,264 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 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 16:09:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-09-19 16:09:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-09-19 16:09:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-09-19 16:09:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 575 transitions. [2018-09-19 16:09:59,363 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 575 transitions. Word has length 22 [2018-09-19 16:09:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:09:59,364 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 575 transitions. [2018-09-19 16:09:59,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:09:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 575 transitions. [2018-09-19 16:09:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-19 16:09:59,367 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:09:59,367 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] [2018-09-19 16:09:59,368 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:09:59,368 INFO L82 PathProgramCache]: Analyzing trace with hash 339299740, now seen corresponding path program 1 times [2018-09-19 16:09:59,369 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:09:59,369 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 16:09:59,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:09:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:09:59,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:09:59,802 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:09:59,815 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:09:59,822 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 16:09:59,862 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:09:59,895 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 16:09:59,896 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:09:59,914 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:09:59,975 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 16:09:59,975 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-19 16:10:00,416 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:10:00,421 INFO L682 Elim1Store]: detected equality via solver [2018-09-19 16:10:00,422 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 16:10:00,434 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:10:00,465 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 16:10:00,467 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:10:00,544 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:10:00,587 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 16:10:00,588 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-19 16:10:00,688 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 16:10:00,721 INFO L700 Elim1Store]: detected not equals via solver [2018-09-19 16:10:00,751 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 16:10:00,752 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:10:00,765 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:10:00,781 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 16:10:00,782 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-19 16:10:01,117 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 16:10:01,117 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:10:01,137 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:10:01,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:10:01,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:10:01,140 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:10:01,140 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:10:01,140 INFO L87 Difference]: Start difference. First operand 495 states and 575 transitions. Second operand 11 states. [2018-09-19 16:10:03,381 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 16:10:04,361 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:10:26,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:10:26,518 INFO L93 Difference]: Finished difference Result 511 states and 593 transitions. [2018-09-19 16:10:26,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:10:26,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2018-09-19 16:10:26,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:10:26,527 INFO L225 Difference]: With dead ends: 511 [2018-09-19 16:10:26,528 INFO L226 Difference]: Without dead ends: 501 [2018-09-19 16:10:26,529 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-09-19 16:10:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2018-09-19 16:10:26,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 495. [2018-09-19 16:10:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-09-19 16:10:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 574 transitions. [2018-09-19 16:10:26,567 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 574 transitions. Word has length 48 [2018-09-19 16:10:26,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:10:26,568 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 574 transitions. [2018-09-19 16:10:26,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:10:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 574 transitions. [2018-09-19 16:10:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:10:26,570 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:10:26,570 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 16:10:26,570 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:10:26,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1457746104, now seen corresponding path program 1 times [2018-09-19 16:10:26,572 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:10:26,572 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 16:10:26,583 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 16:10:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:10:26,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:10:26,885 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 16:10:26,892 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 16:10:26,892 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:10:26,899 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:10:26,920 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 16:10:26,920 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-19 16:10:26,966 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 16:10:26,971 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 16:10:26,972 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:10:26,975 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:10:26,986 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 16:10:26,987 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-19 16:10:27,302 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 16:10:27,303 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:10:27,322 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:10:27,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:10:27,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:10:27,323 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:10:27,326 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:10:27,326 INFO L87 Difference]: Start difference. First operand 495 states and 574 transitions. Second operand 9 states. [2018-09-19 16:10:28,133 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-19 16:10:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:10:47,264 INFO L93 Difference]: Finished difference Result 605 states and 694 transitions. [2018-09-19 16:10:47,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 16:10:47,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-09-19 16:10:47,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:10:47,270 INFO L225 Difference]: With dead ends: 605 [2018-09-19 16:10:47,270 INFO L226 Difference]: Without dead ends: 595 [2018-09-19 16:10:47,271 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-09-19 16:10:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2018-09-19 16:10:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 495. [2018-09-19 16:10:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-09-19 16:10:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 572 transitions. [2018-09-19 16:10:47,302 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 572 transitions. Word has length 50 [2018-09-19 16:10:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:10:47,302 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 572 transitions. [2018-09-19 16:10:47,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:10:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 572 transitions. [2018-09-19 16:10:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:10:47,304 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:10:47,305 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 16:10:47,305 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:10:47,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1261232599, now seen corresponding path program 1 times [2018-09-19 16:10:47,306 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:10:47,306 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 16:10:47,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:10:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:10:47,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:10:47,765 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 16:10:47,765 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:10:47,784 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:10:47,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:10:47,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:10:47,785 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:10:47,785 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:10:47,785 INFO L87 Difference]: Start difference. First operand 495 states and 572 transitions. Second operand 7 states. [2018-09-19 16:11:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:11:02,725 INFO L93 Difference]: Finished difference Result 502 states and 579 transitions. [2018-09-19 16:11:02,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:11:02,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2018-09-19 16:11:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:11:02,731 INFO L225 Difference]: With dead ends: 502 [2018-09-19 16:11:02,731 INFO L226 Difference]: Without dead ends: 494 [2018-09-19 16:11:02,732 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:11:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2018-09-19 16:11:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2018-09-19 16:11:02,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2018-09-19 16:11:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 569 transitions. [2018-09-19 16:11:02,758 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 569 transitions. Word has length 50 [2018-09-19 16:11:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:11:02,758 INFO L480 AbstractCegarLoop]: Abstraction has 494 states and 569 transitions. [2018-09-19 16:11:02,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:11:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 569 transitions. [2018-09-19 16:11:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-19 16:11:02,760 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:11:02,761 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] [2018-09-19 16:11:02,761 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:11:02,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2047721321, now seen corresponding path program 1 times [2018-09-19 16:11:02,762 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:11:02,762 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 16:11:02,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:11:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:11:03,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:11:06,291 WARN L797 $PredicateComparison]: unable to prove that (= |c___ieee754_pow_#res| (fp.div RNE c_~one_pow~0 |c___ieee754_pow_#in~x|)) is different from false [2018-09-19 16:11:08,852 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 16:11:08,852 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:11:08,874 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:11:08,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:11:08,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:11:08,875 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:11:08,876 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2018-09-19 16:11:08,876 INFO L87 Difference]: Start difference. First operand 494 states and 569 transitions. Second operand 9 states. [2018-09-19 16:11:13,677 WARN L797 $PredicateComparison]: unable to prove that (and (= c___ieee754_pow_~x |c___ieee754_pow_#in~x|) (= |c___ieee754_pow_#res| (fp.div RNE c_~one_pow~0 |c___ieee754_pow_#in~x|))) is different from false [2018-09-19 16:11:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:11:15,287 INFO L93 Difference]: Finished difference Result 501 states and 576 transitions. [2018-09-19 16:11:15,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:11:15,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2018-09-19 16:11:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:11:15,293 INFO L225 Difference]: With dead ends: 501 [2018-09-19 16:11:15,293 INFO L226 Difference]: Without dead ends: 494 [2018-09-19 16:11:15,294 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=21, Invalid=57, Unknown=2, NotChecked=30, Total=110 [2018-09-19 16:11:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2018-09-19 16:11:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2018-09-19 16:11:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2018-09-19 16:11:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 568 transitions. [2018-09-19 16:11:15,320 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 568 transitions. Word has length 54 [2018-09-19 16:11:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:11:15,321 INFO L480 AbstractCegarLoop]: Abstraction has 494 states and 568 transitions. [2018-09-19 16:11:15,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:11:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 568 transitions. [2018-09-19 16:11:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-19 16:11:15,325 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:11:15,325 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] [2018-09-19 16:11:15,325 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:11:15,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2050732470, now seen corresponding path program 1 times [2018-09-19 16:11:15,327 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:11:15,327 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 16:11:15,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:11:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:11:15,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:11:15,832 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 16:11:15,832 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:11:15,844 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:11:15,845 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:11:15,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:11:15,845 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:11:15,846 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:11:15,846 INFO L87 Difference]: Start difference. First operand 494 states and 568 transitions. Second operand 9 states. [2018-09-19 16:11:16,280 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-19 16:11:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:11:30,687 INFO L93 Difference]: Finished difference Result 501 states and 575 transitions. [2018-09-19 16:11:30,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:11:30,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2018-09-19 16:11:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:11:30,697 INFO L225 Difference]: With dead ends: 501 [2018-09-19 16:11:30,698 INFO L226 Difference]: Without dead ends: 493 [2018-09-19 16:11:30,699 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:11:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-09-19 16:11:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2018-09-19 16:11:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2018-09-19 16:11:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 566 transitions. [2018-09-19 16:11:30,722 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 566 transitions. Word has length 54 [2018-09-19 16:11:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:11:30,723 INFO L480 AbstractCegarLoop]: Abstraction has 493 states and 566 transitions. [2018-09-19 16:11:30,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:11:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 566 transitions. [2018-09-19 16:11:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-19 16:11:30,724 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:11:30,724 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] [2018-09-19 16:11:30,724 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:11:30,725 INFO L82 PathProgramCache]: Analyzing trace with hash 869856247, now seen corresponding path program 1 times [2018-09-19 16:11:30,725 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:11:30,725 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:11:30,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:11:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:11:31,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:11:37,581 WARN L178 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-09-19 16:11:44,573 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 16:11:44,573 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:11:44,590 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:11:44,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:11:44,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:11:44,591 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:11:44,591 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=56, Unknown=1, NotChecked=0, Total=72 [2018-09-19 16:11:44,593 INFO L87 Difference]: Start difference. First operand 493 states and 566 transitions. Second operand 9 states. [2018-09-19 16:12:53,076 WARN L178 SmtUtils]: Spent 4.33 s on a formula simplification that was a NOOP. DAG size: 8 Received shutdown request... [2018-09-19 16:13:48,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:13:48,023 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 16:13:48,029 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 16:13:48,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:13:48 BoogieIcfgContainer [2018-09-19 16:13:48,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:13:48,030 INFO L168 Benchmark]: Toolchain (without parser) took 283209.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.8 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2018-09-19 16:13:48,031 INFO L168 Benchmark]: CDTParser took 0.21 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 16:13:48,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.49 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 16:13:48,032 INFO L168 Benchmark]: Boogie Preprocessor took 115.74 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 16:13:48,033 INFO L168 Benchmark]: RCFGBuilder took 53064.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -701.6 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. [2018-09-19 16:13:48,034 INFO L168 Benchmark]: TraceAbstraction took 229328.87 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 127.4 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -127.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:13:48,038 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 694.49 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 115.74 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 53064.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -701.6 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229328.87 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 127.4 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -127.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 583]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 583). Cancelled while BasicCegarLoop was constructing difference of abstraction (493states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (148 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 500 locations, 1 error locations. TIMEOUT Result, 229.2s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 205.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3598 SDtfs, 1966 SDslu, 17344 SDs, 0 SdLazy, 1047 SolverSat, 36 SolverUnsat, 38 SolverUnknown, 0 SolverNotchecked, 177.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 353 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 37.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=500occurred 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, 6 MinimizatonAttempts, 106 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 332 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 325 ConstructedInterpolants, 48 QuantifiedInterpolants, 82839 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1437 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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