java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --sifa.abstract.domain IntervalDomain -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 17:17:05,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 17:17:05,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 17:17:05,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 17:17:05,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 17:17:05,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 17:17:05,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 17:17:05,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 17:17:05,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 17:17:05,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 17:17:05,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 17:17:05,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 17:17:05,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 17:17:05,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 17:17:05,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 17:17:05,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 17:17:05,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 17:17:05,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 17:17:05,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 17:17:05,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 17:17:05,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 17:17:05,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 17:17:05,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 17:17:05,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 17:17:05,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 17:17:05,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 17:17:05,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 17:17:05,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 17:17:05,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 17:17:05,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 17:17:05,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 17:17:05,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 17:17:05,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 17:17:05,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 17:17:05,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 17:17:05,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 17:17:05,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-03 17:17:05,846 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 17:17:05,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 17:17:05,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 17:17:05,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 17:17:05,850 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 17:17:05,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 17:17:05,851 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 17:17:05,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 17:17:05,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 17:17:05,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 17:17:05,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 17:17:05,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 17:17:05,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 17:17:05,854 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 17:17:05,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 17:17:05,854 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 17:17:05,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 17:17:05,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 17:17:05,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 17:17:05,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 17:17:05,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 17:17:05,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 17:17:05,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 17:17:05,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 17:17:05,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 17:17:05,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 17:17:05,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 17:17:05,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 17:17:05,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2019-09-03 17:17:05,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 17:17:05,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 17:17:05,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 17:17:05,946 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 17:17:05,947 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 17:17:05,948 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c [2019-09-03 17:17:06,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e90acb9/3887cfabeb7a44049e285de861bed745/FLAGa57c8e766 [2019-09-03 17:17:06,450 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 17:17:06,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c [2019-09-03 17:17:06,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e90acb9/3887cfabeb7a44049e285de861bed745/FLAGa57c8e766 [2019-09-03 17:17:06,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e90acb9/3887cfabeb7a44049e285de861bed745 [2019-09-03 17:17:06,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 17:17:06,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 17:17:06,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 17:17:06,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 17:17:06,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 17:17:06,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 05:17:06" (1/1) ... [2019-09-03 17:17:06,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664351b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:06, skipping insertion in model container [2019-09-03 17:17:06,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 05:17:06" (1/1) ... [2019-09-03 17:17:06,868 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 17:17:06,881 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 17:17:07,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 17:17:07,052 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 17:17:07,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 17:17:07,088 INFO L192 MainTranslator]: Completed translation [2019-09-03 17:17:07,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07 WrapperNode [2019-09-03 17:17:07,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 17:17:07,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 17:17:07,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 17:17:07,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 17:17:07,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07" (1/1) ... [2019-09-03 17:17:07,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07" (1/1) ... [2019-09-03 17:17:07,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07" (1/1) ... [2019-09-03 17:17:07,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07" (1/1) ... [2019-09-03 17:17:07,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07" (1/1) ... [2019-09-03 17:17:07,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07" (1/1) ... [2019-09-03 17:17:07,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07" (1/1) ... [2019-09-03 17:17:07,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 17:17:07,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 17:17:07,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 17:17:07,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 17:17:07,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 05:17:07" (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 [2019-09-03 17:17:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 17:17:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 17:17:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 17:17:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 17:17:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 17:17:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 17:17:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 17:17:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 17:17:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 17:17:07,410 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 17:17:07,410 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 17:17:07,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 05:17:07 BoogieIcfgContainer [2019-09-03 17:17:07,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 17:17:07,412 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-03 17:17:07,412 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-03 17:17:07,412 INFO L275 PluginConnector]: Sifa initialized [2019-09-03 17:17:07,413 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 05:17:07" (1/1) ... [2019-09-03 17:17:07,414 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=IntervalDomain ♦ Abstract when formula's dag size exceeds (negative numbers disable this limit)=-1 ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ Abstract when formula has more disjuncts than (negative numbers disable this limit)=8 ♦ Call Summarizer=ReUseSupersetCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ Simplification Technique=NONE ♦ Intern Fluid=SizeLimitFluid [2019-09-03 17:17:07,444 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-03 17:17:07,445 INFO L169 IcfgInterpreter]: Building call graph [2019-09-03 17:17:07,452 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-03 17:17:07,460 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-03 17:17:07,461 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-03 17:17:07,508 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs