./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d3a0113f0e8b781548a014794ff4c594483afc44f19a8c585ba3b3e554b1b3f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:17:11,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:17:11,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:17:11,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:17:11,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:17:11,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:17:11,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:17:11,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:17:11,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:17:11,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:17:11,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:17:11,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:17:11,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:17:11,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:17:11,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:17:11,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:17:11,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:17:11,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:17:11,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:17:11,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:17:11,214 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:17:11,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:17:11,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:17:11,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:17:11,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:17:11,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:17:11,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:17:11,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:17:11,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:17:11,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:17:11,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:17:11,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:17:11,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:17:11,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:17:11,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:17:11,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:17:11,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:17:11,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:17:11,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:17:11,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:17:11,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:17:11,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:17:11,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:17:11,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:17:11,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:17:11,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:17:11,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:17:11,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:17:11,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:17:11,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:17:11,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:17:11,271 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:17:11,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:17:11,272 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:17:11,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:17:11,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:17:11,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:17:11,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:17:11,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:17:11,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:17:11,273 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:17:11,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:17:11,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:17:11,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:17:11,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:17:11,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:17:11,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:17:11,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:17:11,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:17:11,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:17:11,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:17:11,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:17:11,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:17:11,276 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:17:11,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:17:11,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:17:11,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d3a0113f0e8b781548a014794ff4c594483afc44f19a8c585ba3b3e554b1b3f [2022-07-21 08:17:11,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:17:11,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:17:11,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:17:11,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:17:11,606 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:17:11,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c [2022-07-21 08:17:11,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad82f3277/7374758382924b19837a65e4d71eecc6/FLAGa9c90fc64 [2022-07-21 08:17:12,153 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:17:12,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c [2022-07-21 08:17:12,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad82f3277/7374758382924b19837a65e4d71eecc6/FLAGa9c90fc64 [2022-07-21 08:17:12,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad82f3277/7374758382924b19837a65e4d71eecc6 [2022-07-21 08:17:12,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:17:12,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:17:12,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:17:12,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:17:12,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:17:12,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:12,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ba6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12, skipping insertion in model container [2022-07-21 08:17:12,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:12,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:17:12,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:17:12,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[1998,2011] [2022-07-21 08:17:12,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[2392,2405] [2022-07-21 08:17:12,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:17:12,948 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:17:12,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[1998,2011] [2022-07-21 08:17:12,960 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[2392,2405] [2022-07-21 08:17:12,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:17:12,998 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:17:12,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12 WrapperNode [2022-07-21 08:17:12,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:17:13,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:17:13,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:17:13,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:17:13,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,037 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-21 08:17:13,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:17:13,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:17:13,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:17:13,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:17:13,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:17:13,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:17:13,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:17:13,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:17:13,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (1/1) ... [2022-07-21 08:17:13,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:17:13,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:17:13,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:17:13,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:17:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:17:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-21 08:17:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-21 08:17:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-21 08:17:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-21 08:17:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:17:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:17:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:17:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 08:17:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 08:17:13,259 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:17:13,276 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:17:13,691 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:17:13,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:17:13,705 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 08:17:13,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:17:13 BoogieIcfgContainer [2022-07-21 08:17:13,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:17:13,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:17:13,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:17:13,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:17:13,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:17:12" (1/3) ... [2022-07-21 08:17:13,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451fe2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:17:13, skipping insertion in model container [2022-07-21 08:17:13,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:12" (2/3) ... [2022-07-21 08:17:13,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451fe2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:17:13, skipping insertion in model container [2022-07-21 08:17:13,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:17:13" (3/3) ... [2022-07-21 08:17:13,715 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_4-2a.c.cil.c [2022-07-21 08:17:13,727 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:17:13,728 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:17:13,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:17:13,809 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c5624c7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5ccd68fa [2022-07-21 08:17:13,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:17:13,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 85 states have internal predecessors, (139), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 08:17:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:17:13,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:17:13,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:17:13,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:17:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:17:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-21 08:17:13,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:17:13,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537691423] [2022-07-21 08:17:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:17:13,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:17:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:17:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:17:13,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:17:13,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537691423] [2022-07-21 08:17:13,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537691423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:17:13,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:17:13,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:17:13,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388155232] [2022-07-21 08:17:13,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:17:13,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:17:13,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:17:14,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:17:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:17:14,009 INFO L87 Difference]: Start difference. First operand has 97 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 85 states have internal predecessors, (139), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:17:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:17:14,064 INFO L93 Difference]: Finished difference Result 189 states and 310 transitions. [2022-07-21 08:17:14,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:17:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 08:17:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:17:14,074 INFO L225 Difference]: With dead ends: 189 [2022-07-21 08:17:14,075 INFO L226 Difference]: Without dead ends: 90 [2022-07-21 08:17:14,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:17:14,086 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:17:14,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:17:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-21 08:17:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-21 08:17:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 79 states have internal predecessors, (111), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 08:17:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2022-07-21 08:17:14,137 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 7 [2022-07-21 08:17:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:17:14,138 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2022-07-21 08:17:14,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:17:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2022-07-21 08:17:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:17:14,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:17:14,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:17:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:17:14,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:17:14,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:17:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-21 08:17:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:17:14,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607004350] [2022-07-21 08:17:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:17:14,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:17:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:17:14,172 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:17:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:17:14,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:17:14,219 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:17:14,220 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 08:17:14,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-21 08:17:14,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:17:14,225 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 08:17:14,245 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:17:14,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:17:14 BoogieIcfgContainer [2022-07-21 08:17:14,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:17:14,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:17:14,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:17:14,270 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:17:14,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:17:13" (3/4) ... [2022-07-21 08:17:14,273 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 08:17:14,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:17:14,274 INFO L158 Benchmark]: Toolchain (without parser) took 1591.06ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.1MB in the beginning and 47.2MB in the end (delta: -16.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:17:14,275 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 37.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:17:14,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.86ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.0MB in the beginning and 45.7MB in the end (delta: -14.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-07-21 08:17:14,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.61ms. Allocated memory is still 67.1MB. Free memory was 45.7MB in the beginning and 43.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:17:14,280 INFO L158 Benchmark]: Boogie Preprocessor took 42.67ms. Allocated memory is still 67.1MB. Free memory was 43.9MB in the beginning and 42.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:17:14,280 INFO L158 Benchmark]: RCFGBuilder took 623.31ms. Allocated memory is still 67.1MB. Free memory was 42.2MB in the beginning and 39.3MB in the end (delta: 2.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-07-21 08:17:14,281 INFO L158 Benchmark]: TraceAbstraction took 558.89ms. Allocated memory is still 67.1MB. Free memory was 38.6MB in the beginning and 47.9MB in the end (delta: -9.3MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-21 08:17:14,281 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 47.2MB in the end (delta: 331.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:17:14,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 37.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.86ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.0MB in the beginning and 45.7MB in the end (delta: -14.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.61ms. Allocated memory is still 67.1MB. Free memory was 45.7MB in the beginning and 43.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.67ms. Allocated memory is still 67.1MB. Free memory was 43.9MB in the beginning and 42.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.31ms. Allocated memory is still 67.1MB. Free memory was 42.2MB in the beginning and 39.3MB in the end (delta: 2.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * TraceAbstraction took 558.89ms. Allocated memory is still 67.1MB. Free memory was 38.6MB in the beginning and 47.9MB in the end (delta: -9.3MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 47.2MB in the end (delta: 331.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 134 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 08:17:14,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d3a0113f0e8b781548a014794ff4c594483afc44f19a8c585ba3b3e554b1b3f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:17:16,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:17:16,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:17:16,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:17:16,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:17:16,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:17:16,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:17:16,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:17:16,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:17:16,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:17:16,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:17:16,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:17:16,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:17:16,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:17:16,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:17:16,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:17:16,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:17:16,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:17:16,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:17:16,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:17:16,259 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:17:16,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:17:16,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:17:16,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:17:16,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:17:16,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:17:16,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:17:16,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:17:16,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:17:16,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:17:16,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:17:16,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:17:16,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:17:16,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:17:16,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:17:16,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:17:16,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:17:16,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:17:16,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:17:16,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:17:16,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:17:16,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:17:16,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 08:17:16,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:17:16,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:17:16,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:17:16,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:17:16,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:17:16,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:17:16,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:17:16,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:17:16,323 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:17:16,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:17:16,324 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:17:16,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:17:16,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:17:16,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:17:16,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:17:16,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:17:16,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 08:17:16,325 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 08:17:16,325 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 08:17:16,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:17:16,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:17:16,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:17:16,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:17:16,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:17:16,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:17:16,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:17:16,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:17:16,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:17:16,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:17:16,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:17:16,328 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 08:17:16,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 08:17:16,328 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:17:16,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:17:16,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:17:16,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 08:17:16,329 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d3a0113f0e8b781548a014794ff4c594483afc44f19a8c585ba3b3e554b1b3f [2022-07-21 08:17:16,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:17:16,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:17:16,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:17:16,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:17:16,670 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:17:16,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c [2022-07-21 08:17:16,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3f17be3/fe75f5bdeecc419ca56b9350cdc0bc89/FLAG3776f6289 [2022-07-21 08:17:17,188 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:17:17,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c [2022-07-21 08:17:17,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3f17be3/fe75f5bdeecc419ca56b9350cdc0bc89/FLAG3776f6289 [2022-07-21 08:17:17,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3f17be3/fe75f5bdeecc419ca56b9350cdc0bc89 [2022-07-21 08:17:17,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:17:17,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:17:17,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:17:17,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:17:17,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:17:17,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:17,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4115c22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17, skipping insertion in model container [2022-07-21 08:17:17,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:17,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:17:17,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:17:17,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[1998,2011] [2022-07-21 08:17:17,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[2392,2405] [2022-07-21 08:17:17,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:17:17,861 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:17:17,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[1998,2011] [2022-07-21 08:17:17,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-2a.c.cil.c[2392,2405] [2022-07-21 08:17:17,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:17:17,936 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:17:17,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17 WrapperNode [2022-07-21 08:17:17,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:17:17,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:17:17,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:17:17,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:17:17,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:17,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:17,994 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-21 08:17:17,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:17:17,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:17:17,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:17:17,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:17:18,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:18,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:18,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:18,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:18,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:18,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:18,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:18,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:17:18,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:17:18,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:17:18,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:17:18,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (1/1) ... [2022-07-21 08:17:18,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:17:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:17:18,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:17:18,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:17:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:17:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 08:17:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-21 08:17:18,134 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-21 08:17:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-21 08:17:18,135 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-21 08:17:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:17:18,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:17:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 08:17:18,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 08:17:18,224 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:17:18,244 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:17:20,770 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:17:20,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:17:20,777 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 08:17:20,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:17:20 BoogieIcfgContainer [2022-07-21 08:17:20,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:17:20,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:17:20,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:17:20,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:17:20,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:17:17" (1/3) ... [2022-07-21 08:17:20,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49272ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:17:20, skipping insertion in model container [2022-07-21 08:17:20,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:17:17" (2/3) ... [2022-07-21 08:17:20,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49272ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:17:20, skipping insertion in model container [2022-07-21 08:17:20,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:17:20" (3/3) ... [2022-07-21 08:17:20,786 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_4-2a.c.cil.c [2022-07-21 08:17:20,799 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:17:20,800 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:17:20,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:17:20,851 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75593781, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ddb7821 [2022-07-21 08:17:20,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:17:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 08:17:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:17:20,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:17:20,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:17:20,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:17:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:17:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-21 08:17:20,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 08:17:20,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548986895] [2022-07-21 08:17:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:17:20,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 08:17:20,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 08:17:20,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 08:17:20,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 08:17:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:17:21,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 08:17:21,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:17:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:17:21,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:17:21,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 08:17:21,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548986895] [2022-07-21 08:17:21,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548986895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:17:21,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:17:21,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:17:21,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136049989] [2022-07-21 08:17:21,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:17:21,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:17:21,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 08:17:21,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:17:21,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:17:21,355 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:17:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:17:21,380 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-07-21 08:17:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:17:21,382 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 08:17:21,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:17:21,388 INFO L225 Difference]: With dead ends: 121 [2022-07-21 08:17:21,388 INFO L226 Difference]: Without dead ends: 56 [2022-07-21 08:17:21,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:17:21,400 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:17:21,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:17:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-21 08:17:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-21 08:17:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 08:17:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-07-21 08:17:21,436 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-07-21 08:17:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:17:21,437 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-07-21 08:17:21,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:17:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-07-21 08:17:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:17:21,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:17:21,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:17:21,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:17:21,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 08:17:21,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:17:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:17:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-21 08:17:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 08:17:21,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507562261] [2022-07-21 08:17:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:17:21,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 08:17:21,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 08:17:21,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 08:17:21,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process