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/float_req_bl_0871_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:27:47,598 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:27:47,602 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:27:47,621 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:27:47,622 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:27:47,623 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:27:47,626 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:27:47,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:27:47,632 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:27:47,633 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:27:47,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:27:47,636 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:27:47,637 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:27:47,638 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:27:47,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:27:47,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:27:47,650 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:27:47,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:27:47,653 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:27:47,655 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:27:47,656 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:27:47,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:27:47,660 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:27:47,660 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:27:47,661 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:27:47,662 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:27:47,663 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:27:47,664 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:27:47,664 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:27:47,665 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:27:47,666 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:27:47,666 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:27:47,667 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:27:47,667 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:27:47,668 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:27:47,669 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:27:47,669 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 16:27:47,698 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:27:47,698 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:27:47,699 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:27:47,699 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:27:47,700 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:27:47,700 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:27:47,703 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:27:47,703 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:27:47,703 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:27:47,704 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:27:47,704 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:27:47,704 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:27:47,704 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:27:47,704 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:27:47,705 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:27:47,705 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:27:47,705 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:27:47,705 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:27:47,705 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:27:47,705 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:27:47,706 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:27:47,706 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:27:47,707 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:27:47,707 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:27:47,708 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:27:47,708 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:27:47,708 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:27:47,708 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:27:47,708 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:27:47,708 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:27:47,709 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:27:47,709 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:27:47,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:27:47,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:27:47,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:27:47,790 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:27:47,791 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:27:47,792 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0871_true-unreach-call.c [2018-09-19 16:27:48,152 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c829931d6/3e72297a9e294084b0b0ca1bd50f9ceb/FLAG8b6bd2e95 [2018-09-19 16:27:48,364 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:27:48,365 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0871_true-unreach-call.c [2018-09-19 16:27:48,378 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c829931d6/3e72297a9e294084b0b0ca1bd50f9ceb/FLAG8b6bd2e95 [2018-09-19 16:27:48,394 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c829931d6/3e72297a9e294084b0b0ca1bd50f9ceb [2018-09-19 16:27:48,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:27:48,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:27:48,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:27:48,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:27:48,416 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:27:48,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:27:48" (1/1) ... [2018-09-19 16:27:48,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c01a144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:48, skipping insertion in model container [2018-09-19 16:27:48,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:27:48" (1/1) ... [2018-09-19 16:27:48,433 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:27:48,891 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:27:48,920 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:27:49,060 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:27:49,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49 WrapperNode [2018-09-19 16:27:49,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:27:49,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:27:49,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:27:49,125 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:27:49,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (1/1) ... [2018-09-19 16:27:49,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (1/1) ... [2018-09-19 16:27:49,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (1/1) ... [2018-09-19 16:27:49,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (1/1) ... [2018-09-19 16:27:49,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (1/1) ... [2018-09-19 16:27:49,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (1/1) ... [2018-09-19 16:27:49,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (1/1) ... [2018-09-19 16:27:49,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:27:49,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:27:49,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:27:49,363 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:27:49,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (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 16:27:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:27:49,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:27:49,455 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2018-09-19 16:27:49,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-19 16:27:49,455 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2018-09-19 16:27:49,456 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2018-09-19 16:27:49,456 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-19 16:27:49,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_powf [2018-09-19 16:27:49,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:27:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:27:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-19 16:27:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2018-09-19 16:27:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:27:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-19 16:27:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:27:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:27:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:27:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-19 16:27:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-19 16:27:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2018-09-19 16:27:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2018-09-19 16:27:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-19 16:27:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_powf [2018-09-19 16:27:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:27:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:27:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:27:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:27:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-19 16:27:50,056 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:50,074 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:50,139 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:50,157 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:50,329 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:50,370 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:50,489 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:50,510 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:55,682 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:55,728 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:55,962 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:55,983 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:56,893 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:56,939 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:59,396 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:27:59,403 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:00,772 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:00,818 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:03,109 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:03,116 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:04,479 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:04,486 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:06,605 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:06,611 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:09,320 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:09,327 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:11,628 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:11,634 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:13,843 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:13,855 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:14,340 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:14,345 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:14,485 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:14,491 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:14,930 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:14,952 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:14,961 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:14,967 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:17,141 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:17,147 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:28:17,939 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:28:17,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:28:17 BoogieIcfgContainer [2018-09-19 16:28:17,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:28:17,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:28:17,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:28:17,945 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:28:17,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:27:48" (1/3) ... [2018-09-19 16:28:17,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f949ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:28:17, skipping insertion in model container [2018-09-19 16:28:17,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:27:49" (2/3) ... [2018-09-19 16:28:17,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f949ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:28:17, skipping insertion in model container [2018-09-19 16:28:17,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:28:17" (3/3) ... [2018-09-19 16:28:17,949 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0871_true-unreach-call.c [2018-09-19 16:28:17,959 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:28:17,968 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:28:18,024 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:28:18,025 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:28:18,026 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:28:18,026 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:28:18,026 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:28:18,026 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:28:18,026 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:28:18,026 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:28:18,027 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:28:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states. [2018-09-19 16:28:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 16:28:18,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:28:18,073 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:28:18,076 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:28:18,081 INFO L82 PathProgramCache]: Analyzing trace with hash 93333362, now seen corresponding path program 1 times [2018-09-19 16:28:18,087 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:28:18,088 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 16:28:18,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:28:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:28:18,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:28:18,279 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 16:28:18,279 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:28:18,293 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:28:18,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:28:18,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:28:18,313 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:28:18,314 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:28:18,316 INFO L87 Difference]: Start difference. First operand 483 states. Second operand 2 states. [2018-09-19 16:28:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:28:18,396 INFO L93 Difference]: Finished difference Result 958 states and 1230 transitions. [2018-09-19 16:28:18,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:28:18,398 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-19 16:28:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:28:18,418 INFO L225 Difference]: With dead ends: 958 [2018-09-19 16:28:18,419 INFO L226 Difference]: Without dead ends: 479 [2018-09-19 16:28:18,429 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:28:18,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-09-19 16:28:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-09-19 16:28:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-19 16:28:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 541 transitions. [2018-09-19 16:28:18,522 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 541 transitions. Word has length 17 [2018-09-19 16:28:18,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:28:18,523 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 541 transitions. [2018-09-19 16:28:18,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:28:18,523 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 541 transitions. [2018-09-19 16:28:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-19 16:28:18,524 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:28:18,525 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] [2018-09-19 16:28:18,525 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:28:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1338552630, now seen corresponding path program 1 times [2018-09-19 16:28:18,527 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:28:18,527 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 16:28:18,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:28:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:28:18,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:28:18,843 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 16:28:18,844 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:28:18,859 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:28:18,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 16:28:18,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 16:28:18,861 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 16:28:18,861 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:28:18,862 INFO L87 Difference]: Start difference. First operand 479 states and 541 transitions. Second operand 6 states. [2018-09-19 16:28:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:28:31,477 INFO L93 Difference]: Finished difference Result 487 states and 548 transitions. [2018-09-19 16:28:31,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 16:28:31,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-09-19 16:28:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:28:31,703 INFO L225 Difference]: With dead ends: 487 [2018-09-19 16:28:31,703 INFO L226 Difference]: Without dead ends: 481 [2018-09-19 16:28:31,704 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-19 16:28:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-09-19 16:28:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2018-09-19 16:28:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-19 16:28:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 538 transitions. [2018-09-19 16:28:31,739 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 538 transitions. Word has length 35 [2018-09-19 16:28:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:28:31,739 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 538 transitions. [2018-09-19 16:28:31,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 16:28:31,740 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 538 transitions. [2018-09-19 16:28:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-19 16:28:31,741 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:28:31,741 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] [2018-09-19 16:28:31,741 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:28:31,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1014915215, now seen corresponding path program 1 times [2018-09-19 16:28:31,743 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:28:31,743 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 16:28:31,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:28:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:28:31,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:28:32,037 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 11 treesize of output 8 [2018-09-19 16:28:32,042 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-19 16:28:32,042 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:28:32,048 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:28:32,064 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:28:32,064 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:28:32,091 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 29 treesize of output 21 [2018-09-19 16:28:32,098 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 21 treesize of output 9 [2018-09-19 16:28:32,098 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:28:32,102 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:28:32,106 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:28:32,107 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:28:32,257 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 16:28:32,258 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:28:32,273 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:28:32,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:28:32,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:28:32,276 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:28:32,276 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:28:32,276 INFO L87 Difference]: Start difference. First operand 479 states and 538 transitions. Second operand 9 states. [2018-09-19 16:28:39,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:28:39,560 INFO L93 Difference]: Finished difference Result 593 states and 663 transitions. [2018-09-19 16:28:39,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:28:39,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-09-19 16:28:39,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:28:39,564 INFO L225 Difference]: With dead ends: 593 [2018-09-19 16:28:39,565 INFO L226 Difference]: Without dead ends: 351 [2018-09-19 16:28:39,566 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:28:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-19 16:28:39,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2018-09-19 16:28:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-09-19 16:28:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 394 transitions. [2018-09-19 16:28:39,585 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 394 transitions. Word has length 37 [2018-09-19 16:28:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:28:39,585 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 394 transitions. [2018-09-19 16:28:39,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:28:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 394 transitions. [2018-09-19 16:28:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-19 16:28:39,587 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:28:39,587 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] [2018-09-19 16:28:39,587 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:28:39,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1480191573, now seen corresponding path program 1 times [2018-09-19 16:28:39,588 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:28:39,588 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 16:28:39,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:28:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:28:39,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:28:46,305 WARN L178 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-19 16:28:49,301 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 16:28:49,302 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:28:49,325 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:28:49,325 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-19 16:28:49,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 16:28:49,326 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 16:28:49,326 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2018-09-19 16:28:49,326 INFO L87 Difference]: Start difference. First operand 349 states and 394 transitions. Second operand 8 states. [2018-09-19 16:29:06,037 WARN L178 SmtUtils]: Spent 3.79 s on a formula simplification that was a NOOP. DAG size: 13 [2018-09-19 16:29:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:29:32,481 INFO L93 Difference]: Finished difference Result 357 states and 401 transitions. [2018-09-19 16:29:32,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-19 16:29:32,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-09-19 16:29:32,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:29:32,499 INFO L225 Difference]: With dead ends: 357 [2018-09-19 16:29:32,499 INFO L226 Difference]: Without dead ends: 351 [2018-09-19 16:29:32,500 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-09-19 16:29:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-19 16:29:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2018-09-19 16:29:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-09-19 16:29:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 393 transitions. [2018-09-19 16:29:32,516 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 393 transitions. Word has length 40 [2018-09-19 16:29:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:29:32,516 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 393 transitions. [2018-09-19 16:29:32,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 16:29:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 393 transitions. [2018-09-19 16:29:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-19 16:29:32,518 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:29:32,518 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] [2018-09-19 16:29:32,519 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:29:32,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1451562422, now seen corresponding path program 1 times [2018-09-19 16:29:32,519 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:29:32,519 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 16:29:32,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:29:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:29:32,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:29:32,765 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 16:29:32,766 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:29:32,781 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:29:32,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:29:32,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:29:32,782 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:29:32,782 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:29:32,783 INFO L87 Difference]: Start difference. First operand 349 states and 393 transitions. Second operand 7 states. [2018-09-19 16:29:39,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:29:39,255 INFO L93 Difference]: Finished difference Result 355 states and 398 transitions. [2018-09-19 16:29:39,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:29:39,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2018-09-19 16:29:39,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:29:39,259 INFO L225 Difference]: With dead ends: 355 [2018-09-19 16:29:39,259 INFO L226 Difference]: Without dead ends: 348 [2018-09-19 16:29:39,260 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:29:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-09-19 16:29:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-09-19 16:29:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-09-19 16:29:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 391 transitions. [2018-09-19 16:29:39,276 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 391 transitions. Word has length 40 [2018-09-19 16:29:39,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:29:39,277 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 391 transitions. [2018-09-19 16:29:39,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:29:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 391 transitions. [2018-09-19 16:29:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-19 16:29:39,278 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:29:39,278 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] [2018-09-19 16:29:39,279 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:29:39,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1194494709, now seen corresponding path program 1 times [2018-09-19 16:29:39,279 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:29:39,280 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 16:29:39,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:29:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:29:39,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:29:40,156 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-09-19 16:29:40,445 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 16:29:40,446 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:29:40,459 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:29:40,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 16:29:40,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 16:29:40,460 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 16:29:40,460 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-19 16:29:40,460 INFO L87 Difference]: Start difference. First operand 348 states and 391 transitions. Second operand 7 states. [2018-09-19 16:29:42,490 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-19 16:29:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:29:52,494 INFO L93 Difference]: Finished difference Result 354 states and 396 transitions. [2018-09-19 16:29:52,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 16:29:52,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2018-09-19 16:29:52,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:29:52,511 INFO L225 Difference]: With dead ends: 354 [2018-09-19 16:29:52,511 INFO L226 Difference]: Without dead ends: 348 [2018-09-19 16:29:52,511 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:29:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-09-19 16:29:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2018-09-19 16:29:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-09-19 16:29:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 390 transitions. [2018-09-19 16:29:52,526 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 390 transitions. Word has length 40 [2018-09-19 16:29:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:29:52,527 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 390 transitions. [2018-09-19 16:29:52,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 16:29:52,527 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 390 transitions. [2018-09-19 16:29:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-19 16:29:52,529 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:29:52,530 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] [2018-09-19 16:29:52,530 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:29:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash -104605087, now seen corresponding path program 1 times [2018-09-19 16:29:52,531 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:29:52,531 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:29:52,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:29:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:29:52,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:29:52,830 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 11 treesize of output 8 [2018-09-19 16:29:52,843 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 8 treesize of output 7 [2018-09-19 16:29:52,843 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:29:52,869 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:29:52,906 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:29:52,907 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:29:52,936 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 29 treesize of output 21 [2018-09-19 16:29:52,940 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 21 treesize of output 9 [2018-09-19 16:29:52,940 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:29:52,944 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:29:52,947 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:29:52,948 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:29:53,177 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 16:29:53,178 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:29:53,191 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:29:53,191 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:29:53,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:29:53,192 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:29:53,192 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:29:53,192 INFO L87 Difference]: Start difference. First operand 348 states and 390 transitions. Second operand 11 states. [2018-09-19 16:29:53,827 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-19 16:29:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:29:57,238 INFO L93 Difference]: Finished difference Result 363 states and 405 transitions. [2018-09-19 16:29:57,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:29:57,242 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2018-09-19 16:29:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:29:57,247 INFO L225 Difference]: With dead ends: 363 [2018-09-19 16:29:57,247 INFO L226 Difference]: Without dead ends: 354 [2018-09-19 16:29:57,248 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:29:57,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-09-19 16:29:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 348. [2018-09-19 16:29:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-09-19 16:29:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 389 transitions. [2018-09-19 16:29:57,270 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 389 transitions. Word has length 59 [2018-09-19 16:29:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:29:57,270 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 389 transitions. [2018-09-19 16:29:57,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:29:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 389 transitions. [2018-09-19 16:29:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-19 16:29:57,272 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:29:57,272 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] [2018-09-19 16:29:57,273 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:29:57,273 INFO L82 PathProgramCache]: Analyzing trace with hash 625146228, now seen corresponding path program 1 times [2018-09-19 16:29:57,276 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:29:57,276 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 16:29:57,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:29:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:29:57,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:29:57,812 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 11 treesize of output 8 [2018-09-19 16:29:57,824 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 8 treesize of output 7 [2018-09-19 16:29:57,825 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:29:57,841 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:29:57,852 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:29:57,853 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:29:57,884 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 29 treesize of output 21 [2018-09-19 16:29:57,905 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 21 treesize of output 9 [2018-09-19 16:29:57,906 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:29:57,931 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:29:57,953 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:29:57,953 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:29:58,978 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 16:29:58,978 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:29:58,991 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:29:58,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 16:29:58,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 16:29:58,992 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 16:29:58,992 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-09-19 16:29:58,992 INFO L87 Difference]: Start difference. First operand 348 states and 389 transitions. Second operand 11 states. [2018-09-19 16:30:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:30:01,200 INFO L93 Difference]: Finished difference Result 363 states and 404 transitions. [2018-09-19 16:30:01,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 16:30:01,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2018-09-19 16:30:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:30:01,203 INFO L225 Difference]: With dead ends: 363 [2018-09-19 16:30:01,204 INFO L226 Difference]: Without dead ends: 354 [2018-09-19 16:30:01,204 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-09-19 16:30:01,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-09-19 16:30:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 348. [2018-09-19 16:30:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-09-19 16:30:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 388 transitions. [2018-09-19 16:30:01,222 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 388 transitions. Word has length 60 [2018-09-19 16:30:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:30:01,223 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 388 transitions. [2018-09-19 16:30:01,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 16:30:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 388 transitions. [2018-09-19 16:30:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-19 16:30:01,225 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:30:01,226 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 16:30:01,226 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:30:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1162250043, now seen corresponding path program 1 times [2018-09-19 16:30:01,232 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:30:01,232 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:30:01,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:30:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:30:01,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:30:01,654 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 11 treesize of output 8 [2018-09-19 16:30:01,659 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 8 treesize of output 7 [2018-09-19 16:30:01,659 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:30:01,663 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:01,676 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:01,677 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-19 16:30:01,701 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 29 treesize of output 21 [2018-09-19 16:30:01,705 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 21 treesize of output 9 [2018-09-19 16:30:01,705 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:30:01,708 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:01,712 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:01,712 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-19 16:30:01,842 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 16:30:01,842 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:30:01,856 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:30:01,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:30:01,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:30:01,856 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:30:01,857 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:30:01,858 INFO L87 Difference]: Start difference. First operand 348 states and 388 transitions. Second operand 10 states. [2018-09-19 16:30:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:30:04,092 INFO L93 Difference]: Finished difference Result 361 states and 401 transitions. [2018-09-19 16:30:04,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-19 16:30:04,094 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2018-09-19 16:30:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:30:04,096 INFO L225 Difference]: With dead ends: 361 [2018-09-19 16:30:04,096 INFO L226 Difference]: Without dead ends: 352 [2018-09-19 16:30:04,097 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-19 16:30:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-09-19 16:30:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 348. [2018-09-19 16:30:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-09-19 16:30:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 387 transitions. [2018-09-19 16:30:04,110 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 387 transitions. Word has length 61 [2018-09-19 16:30:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:30:04,110 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 387 transitions. [2018-09-19 16:30:04,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:30:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 387 transitions. [2018-09-19 16:30:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-19 16:30:04,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:30:04,112 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] [2018-09-19 16:30:04,112 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:30:04,113 INFO L82 PathProgramCache]: Analyzing trace with hash -517848722, now seen corresponding path program 1 times [2018-09-19 16:30:04,113 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:30:04,113 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-19 16:30:04,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:30:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:30:04,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:30:04,603 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 11 treesize of output 8 [2018-09-19 16:30:04,608 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 8 treesize of output 7 [2018-09-19 16:30:04,608 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,613 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,629 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,629 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:29 [2018-09-19 16:30:04,666 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 29 treesize of output 21 [2018-09-19 16:30:04,674 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 21 treesize of output 9 [2018-09-19 16:30:04,675 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,678 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,687 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,688 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:17 [2018-09-19 16:30:04,767 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 13 treesize of output 10 [2018-09-19 16:30:04,772 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 10 treesize of output 9 [2018-09-19 16:30:04,773 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,778 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,796 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 16:30:04,796 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2018-09-19 16:30:04,904 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 31 treesize of output 23 [2018-09-19 16:30:04,917 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 23 treesize of output 15 [2018-09-19 16:30:04,917 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-19 16:30:04,943 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-19 16:30:05,046 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 16:30:05,047 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:32 [2018-09-19 16:30:50,951 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2018-09-19 16:30:50,953 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:893) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:732) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:338) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:430) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-09-19 16:30:50,957 INFO L168 Benchmark]: Toolchain (without parser) took 182552.47 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -641.8 MB). Peak memory consumption was 242.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:30:50,958 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 16:30:50,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-19 16:30:50,962 INFO L168 Benchmark]: Boogie Preprocessor took 237.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2018-09-19 16:30:50,962 INFO L168 Benchmark]: RCFGBuilder took 28577.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 146.5 MB). Peak memory consumption was 146.5 MB. Max. memory is 7.1 GB. [2018-09-19 16:30:50,963 INFO L168 Benchmark]: TraceAbstraction took 153015.69 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 125.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 135.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:30:50,967 INFO L336 ainManager$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 715.68 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 237.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 28577.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 146.5 MB). Peak memory consumption was 146.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 153015.69 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 125.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 135.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...