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 -i ../../../trunk/examples/svcomp/float-benchs/interpolation2.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-584d7b9 [2019-08-31 00:59:20,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-31 00:59:20,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-31 00:59:20,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-31 00:59:20,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-31 00:59:20,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-31 00:59:20,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-31 00:59:20,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-31 00:59:20,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-31 00:59:20,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-31 00:59:20,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-08-31 00:59:20,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-31 00:59:20,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-31 00:59:20,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-31 00:59:20,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-31 00:59:20,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-31 00:59:20,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-31 00:59:20,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-31 00:59:20,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-31 00:59:20,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-31 00:59:20,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-31 00:59:20,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-31 00:59:20,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-31 00:59:20,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-31 00:59:20,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-31 00:59:20,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-31 00:59:20,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-31 00:59:20,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-31 00:59:20,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-31 00:59:20,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-31 00:59:20,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-31 00:59:20,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-31 00:59:20,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-31 00:59:20,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-31 00:59:20,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-31 00:59:20,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-31 00:59:20,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-31 00:59:20,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-31 00:59:20,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-31 00:59:20,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-31 00:59:20,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-31 00:59:20,628 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 [2019-08-31 00:59:20,643 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-31 00:59:20,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-31 00:59:20,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-31 00:59:20,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-31 00:59:20,647 INFO L138 SettingsManager]: * Use SBE=true [2019-08-31 00:59:20,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-31 00:59:20,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-31 00:59:20,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-31 00:59:20,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-31 00:59:20,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-31 00:59:20,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-31 00:59:20,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-31 00:59:20,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-31 00:59:20,650 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-31 00:59:20,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-31 00:59:20,651 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-31 00:59:20,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-31 00:59:20,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-31 00:59:20,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-31 00:59:20,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-31 00:59:20,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-31 00:59:20,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-31 00:59:20,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-31 00:59:20,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-31 00:59:20,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-31 00:59:20,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-31 00:59:20,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-31 00:59:20,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-31 00:59:20,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-31 00:59:20,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-31 00:59:20,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-31 00:59:20,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-31 00:59:20,722 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-31 00:59:20,722 INFO L275 PluginConnector]: CDTParser initialized [2019-08-31 00:59:20,723 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation2.c.p+cfa-reducer.c [2019-08-31 00:59:20,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f038e86b7/cf7881060ccd40819d76d243acd4cfc2/FLAGfa1806c37 [2019-08-31 00:59:21,235 INFO L306 CDTParser]: Found 1 translation units. [2019-08-31 00:59:21,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation2.c.p+cfa-reducer.c [2019-08-31 00:59:21,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f038e86b7/cf7881060ccd40819d76d243acd4cfc2/FLAGfa1806c37 [2019-08-31 00:59:21,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f038e86b7/cf7881060ccd40819d76d243acd4cfc2 [2019-08-31 00:59:21,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-31 00:59:21,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-31 00:59:21,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-31 00:59:21,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-31 00:59:21,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-31 00:59:21,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:59:21" (1/1) ... [2019-08-31 00:59:21,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4386057e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:21, skipping insertion in model container [2019-08-31 00:59:21,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:59:21" (1/1) ... [2019-08-31 00:59:21,681 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-31 00:59:21,704 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-31 00:59:21,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-31 00:59:21,913 INFO L188 MainTranslator]: Completed pre-run [2019-08-31 00:59:22,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-31 00:59:22,052 INFO L192 MainTranslator]: Completed translation [2019-08-31 00:59:22,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22 WrapperNode [2019-08-31 00:59:22,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-31 00:59:22,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-31 00:59:22,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-31 00:59:22,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-31 00:59:22,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22" (1/1) ... [2019-08-31 00:59:22,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22" (1/1) ... [2019-08-31 00:59:22,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22" (1/1) ... [2019-08-31 00:59:22,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22" (1/1) ... [2019-08-31 00:59:22,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22" (1/1) ... [2019-08-31 00:59:22,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22" (1/1) ... [2019-08-31 00:59:22,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22" (1/1) ... [2019-08-31 00:59:22,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-31 00:59:22,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-31 00:59:22,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-31 00:59:22,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-31 00:59:22,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:59:22" (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 [2019-08-31 00:59:22,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-31 00:59:22,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-31 00:59:22,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-31 00:59:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-31 00:59:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-08-31 00:59:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-08-31 00:59:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-08-31 00:59:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-31 00:59:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-08-31 00:59:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-08-31 00:59:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-08-31 00:59:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-08-31 00:59:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-31 00:59:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-31 00:59:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-08-31 00:59:22,451 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-31 00:59:22,451 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-31 00:59:22,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:59:22 BoogieIcfgContainer [2019-08-31 00:59:22,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-31 00:59:22,457 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-08-31 00:59:22,458 INFO L271 PluginConnector]: Initializing Sifa... [2019-08-31 00:59:22,458 INFO L275 PluginConnector]: Sifa initialized [2019-08-31 00:59:22,463 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:59:22" (1/1) ... [2019-08-31 00:59:22,518 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-31 00:59:22,518 INFO L169 IcfgInterpreter]: Building call graph [2019-08-31 00:59:22,530 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-08-31 00:59:22,538 INFO L179 IcfgInterpreter]: Starting interpretation [2019-08-31 00:59:22,539 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-08-31 00:59:22,637 INFO L375 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 6 treesize of output 5 [2019-08-31 00:59:22,637 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-31 00:59:22,674 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-31 00:59:22,675 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-31 00:59:22,675 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-08-31 00:59:22,708 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 22 for LOIs