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/interpolation.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fab3c18 [2019-08-22 21:24:47,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-22 21:24:47,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-22 21:24:47,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-22 21:24:47,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-22 21:24:47,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-22 21:24:47,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-22 21:24:47,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-22 21:24:47,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-22 21:24:47,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-22 21:24:47,798 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-22 21:24:47,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-22 21:24:47,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-22 21:24:47,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-22 21:24:47,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-22 21:24:47,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-22 21:24:47,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-22 21:24:47,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-22 21:24:47,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-22 21:24:47,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-22 21:24:47,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-22 21:24:47,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-22 21:24:47,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-22 21:24:47,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-22 21:24:47,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-22 21:24:47,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-22 21:24:47,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-22 21:24:47,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-22 21:24:47,822 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 [2019-08-22 21:24:47,836 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-22 21:24:47,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-22 21:24:47,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-22 21:24:47,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-22 21:24:47,837 INFO L138 SettingsManager]: * Use SBE=true [2019-08-22 21:24:47,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-22 21:24:47,838 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-22 21:24:47,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-22 21:24:47,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-22 21:24:47,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-22 21:24:47,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-22 21:24:47,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-22 21:24:47,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-22 21:24:47,839 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-22 21:24:47,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-22 21:24:47,839 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-22 21:24:47,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-22 21:24:47,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-22 21:24:47,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-22 21:24:47,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-22 21:24:47,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-22 21:24:47,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-22 21:24:47,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-22 21:24:47,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-22 21:24:47,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-22 21:24:47,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-22 21:24:47,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-22 21:24:47,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-22 21:24:47,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-22 21:24:47,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-22 21:24:47,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-22 21:24:47,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-22 21:24:47,889 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-22 21:24:47,890 INFO L275 PluginConnector]: CDTParser initialized [2019-08-22 21:24:47,890 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2019-08-22 21:24:47,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e95f8f5/6395cbc6ef1e4bd694ffd49cecee0eff/FLAG72bef8dc3 [2019-08-22 21:24:48,386 INFO L306 CDTParser]: Found 1 translation units. [2019-08-22 21:24:48,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2019-08-22 21:24:48,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e95f8f5/6395cbc6ef1e4bd694ffd49cecee0eff/FLAG72bef8dc3 [2019-08-22 21:24:48,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e95f8f5/6395cbc6ef1e4bd694ffd49cecee0eff [2019-08-22 21:24:48,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-22 21:24:48,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-22 21:24:48,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-22 21:24:48,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-22 21:24:48,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-22 21:24:48,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:24:48" (1/1) ... [2019-08-22 21:24:48,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e445f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:48, skipping insertion in model container [2019-08-22 21:24:48,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:24:48" (1/1) ... [2019-08-22 21:24:48,778 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-22 21:24:48,795 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-22 21:24:48,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-22 21:24:48,976 INFO L188 MainTranslator]: Completed pre-run [2019-08-22 21:24:49,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-22 21:24:49,127 INFO L192 MainTranslator]: Completed translation [2019-08-22 21:24:49,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49 WrapperNode [2019-08-22 21:24:49,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-22 21:24:49,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-22 21:24:49,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-22 21:24:49,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-22 21:24:49,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49" (1/1) ... [2019-08-22 21:24:49,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49" (1/1) ... [2019-08-22 21:24:49,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49" (1/1) ... [2019-08-22 21:24:49,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49" (1/1) ... [2019-08-22 21:24:49,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49" (1/1) ... [2019-08-22 21:24:49,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49" (1/1) ... [2019-08-22 21:24:49,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49" (1/1) ... [2019-08-22 21:24:49,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-22 21:24:49,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-22 21:24:49,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-22 21:24:49,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-22 21:24:49,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:24:49" (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 [2019-08-22 21:24:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-22 21:24:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-22 21:24:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-22 21:24:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-22 21:24:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-08-22 21:24:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-08-22 21:24:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-08-22 21:24:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-22 21:24:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-08-22 21:24:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-08-22 21:24:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-08-22 21:24:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-08-22 21:24:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-22 21:24:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-22 21:24:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-08-22 21:24:49,492 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-22 21:24:49,493 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-22 21:24:49,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:24:49 BoogieIcfgContainer [2019-08-22 21:24:49,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-22 21:24:49,503 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-22 21:24:49,503 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-22 21:24:49,503 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-22 21:24:49,507 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:24:49" (1/1) ... [2019-08-22 21:24:49,531 INFO L148 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-22 21:24:49,533 INFO L155 IcfgInterpreter]: Building call graph [2019-08-22 21:24:49,539 INFO L160 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-08-22 21:24:49,564 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-22 21:24:49,566 INFO L185 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 [2019-08-22 21:24:49,651 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 [2019-08-22 21:24:49,651 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-22 21:24:49,679 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-22 21:24:49,680 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-22 21:24:49,680 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-08-22 21:24:49,698 INFO L185 IcfgInterpreter]: Interpreting procedure main with input of size 22