./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_7+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 44a691d0c7049cc6934dd4c9eebe75a3ba34b64a09862ea689fabb3c0e0e6b0c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:19:58,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:19:58,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:19:58,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:19:58,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:19:58,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:19:58,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:19:58,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:19:58,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:19:58,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:19:58,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:19:58,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:19:58,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:19:58,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:19:58,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:19:58,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:19:58,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:19:58,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:19:58,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:19:58,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:19:58,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:19:58,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:19:58,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:19:58,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:19:58,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:19:58,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:19:58,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:19:58,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:19:58,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:19:58,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:19:58,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:19:58,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:19:58,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:19:58,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:19:58,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:19:58,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:19:58,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:19:58,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:19:58,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:19:58,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:19:58,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:19:58,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:19:58,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:19:58,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:19:58,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:19:58,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:19:58,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:19:58,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:19:58,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:19:58,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:19:58,433 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:19:58,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:19:58,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:19:58,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:19:58,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:19:58,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:19:58,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:19:58,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:19:58,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:19:58,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:19:58,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:19:58,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:19:58,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:19:58,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:19:58,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:19:58,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:19:58,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:58,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:19:58,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:19:58,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:19:58,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:19:58,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:19:58,436 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:19:58,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:19:58,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:19:58,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:19:58,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a691d0c7049cc6934dd4c9eebe75a3ba34b64a09862ea689fabb3c0e0e6b0c [2021-12-22 13:19:58,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:19:58,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:19:58,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:19:58,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:19:58,664 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:19:58,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c [2021-12-22 13:19:58,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b644fbe/7c28ed3e23474a6c84c0a49709679afa/FLAG9cc68e301 [2021-12-22 13:19:59,157 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:19:59,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c [2021-12-22 13:19:59,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b644fbe/7c28ed3e23474a6c84c0a49709679afa/FLAG9cc68e301 [2021-12-22 13:19:59,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6b644fbe/7c28ed3e23474a6c84c0a49709679afa [2021-12-22 13:19:59,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:19:59,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:19:59,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:59,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:19:59,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:19:59,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631a5606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59, skipping insertion in model container [2021-12-22 13:19:59,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:19:59,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:19:59,385 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_7+soft_float_4-2a.c.cil.c[1995,2008] [2021-12-22 13:19:59,389 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_7+soft_float_4-2a.c.cil.c[2389,2402] [2021-12-22 13:19:59,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:59,424 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:19:59,433 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_7+soft_float_4-2a.c.cil.c[1995,2008] [2021-12-22 13:19:59,436 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_7+soft_float_4-2a.c.cil.c[2389,2402] [2021-12-22 13:19:59,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:59,464 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:19:59,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59 WrapperNode [2021-12-22 13:19:59,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:59,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:59,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:19:59,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:19:59,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,495 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-22 13:19:59,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:59,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:19:59,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:19:59,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:19:59,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:19:59,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:19:59,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:19:59,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:19:59,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (1/1) ... [2021-12-22 13:19:59,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:59,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:19:59,548 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) [2021-12-22 13:19:59,559 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 [2021-12-22 13:19:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:19:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-22 13:19:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-22 13:19:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-22 13:19:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-22 13:19:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:19:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:19:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:19:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:19:59,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:19:59,633 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:19:59,634 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:19:59,820 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:19:59,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:19:59,825 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:19:59,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:59 BoogieIcfgContainer [2021-12-22 13:19:59,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:19:59,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:19:59,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:19:59,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:19:59,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:19:59" (1/3) ... [2021-12-22 13:19:59,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2493d546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:59, skipping insertion in model container [2021-12-22 13:19:59,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:59" (2/3) ... [2021-12-22 13:19:59,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2493d546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:59, skipping insertion in model container [2021-12-22 13:19:59,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:59" (3/3) ... [2021-12-22 13:19:59,834 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_4-2a.c.cil.c [2021-12-22 13:19:59,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:19:59,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:19:59,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:19:59,872 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:19:59,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:19:59,894 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) [2021-12-22 13:19:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:59,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:59,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:59,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-22 13:19:59,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:19:59,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964158792] [2021-12-22 13:19:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:59,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:19:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:20:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:20:00,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:20:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964158792] [2021-12-22 13:20:00,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964158792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:20:00,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:20:00,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:20:00,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267451220] [2021-12-22 13:20:00,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:20:00,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:20:00,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:20:00,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:20:00,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:20:00,048 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) [2021-12-22 13:20:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:20:00,065 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-22 13:20:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:20:00,067 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 [2021-12-22 13:20:00,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:20:00,072 INFO L225 Difference]: With dead ends: 121 [2021-12-22 13:20:00,072 INFO L226 Difference]: Without dead ends: 56 [2021-12-22 13:20:00,074 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:20:00,076 INFO L933 BasicCegarLoop]: 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 [2021-12-22 13:20:00,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:20:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-22 13:20:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-22 13:20:00,101 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) [2021-12-22 13:20:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-22 13:20:00,103 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-22 13:20:00,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:20:00,103 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-22 13:20:00,104 INFO L471 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) [2021-12-22 13:20:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-22 13:20:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:20:00,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:20:00,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:20:00,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:20:00,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:20:00,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:20:00,106 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-22 13:20:00,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:20:00,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018642330] [2021-12-22 13:20:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:20:00,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:20:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:20:00,115 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 13:20:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:20:00,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 13:20:00,132 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 13:20:00,133 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 13:20:00,134 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 13:20:00,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:20:00,137 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 13:20:00,138 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:20:00,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:20:00 BoogieIcfgContainer [2021-12-22 13:20:00,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:20:00,153 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:20:00,153 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:20:00,153 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:20:00,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:59" (3/4) ... [2021-12-22 13:20:00,156 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 13:20:00,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:20:00,156 INFO L158 Benchmark]: Toolchain (without parser) took 968.47ms. Allocated memory is still 113.2MB. Free memory was 75.4MB in the beginning and 42.3MB in the end (delta: 33.0MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2021-12-22 13:20:00,157 INFO L158 Benchmark]: CDTParser took 2.66ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 92.2MB in the end (delta: -9.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:20:00,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.40ms. Allocated memory is still 113.2MB. Free memory was 75.2MB in the beginning and 83.4MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 13:20:00,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.87ms. Allocated memory is still 113.2MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:20:00,158 INFO L158 Benchmark]: Boogie Preprocessor took 24.97ms. Allocated memory is still 113.2MB. Free memory was 81.8MB in the beginning and 80.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:20:00,158 INFO L158 Benchmark]: RCFGBuilder took 304.66ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 67.1MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-22 13:20:00,164 INFO L158 Benchmark]: TraceAbstraction took 322.63ms. Allocated memory is still 113.2MB. Free memory was 66.6MB in the beginning and 42.7MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-22 13:20:00,165 INFO L158 Benchmark]: Witness Printer took 2.58ms. Allocated memory is still 113.2MB. Free memory was 42.7MB in the beginning and 42.3MB in the end (delta: 394.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:20:00,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.66ms. Allocated memory is still 113.2MB. Free memory was 83.2MB in the beginning and 92.2MB in the end (delta: -9.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.40ms. Allocated memory is still 113.2MB. Free memory was 75.2MB in the beginning and 83.4MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.87ms. Allocated memory is still 113.2MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.97ms. Allocated memory is still 113.2MB. Free memory was 81.8MB in the beginning and 80.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 304.66ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 67.1MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 322.63ms. Allocated memory is still 113.2MB. Free memory was 66.6MB in the beginning and 42.7MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.58ms. Allocated memory is still 113.2MB. Free memory was 42.7MB in the beginning and 42.3MB in the end (delta: 394.1kB). 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 < 1.4f) 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, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 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, 81 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=63occurred 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 [2021-12-22 13:20:00,201 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_7+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 44a691d0c7049cc6934dd4c9eebe75a3ba34b64a09862ea689fabb3c0e0e6b0c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:20:01,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:20:01,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:20:01,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:20:01,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:20:01,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:20:01,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:20:01,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:20:01,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:20:01,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:20:01,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:20:01,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:20:01,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:20:01,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:20:01,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:20:01,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:20:01,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:20:01,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:20:01,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:20:01,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:20:01,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:20:01,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:20:01,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:20:01,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:20:01,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:20:01,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:20:01,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:20:01,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:20:01,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:20:01,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:20:01,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:20:01,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:20:01,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:20:01,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:20:01,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:20:01,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:20:01,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:20:01,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:20:01,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:20:01,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:20:01,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:20:01,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 13:20:01,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:20:01,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:20:01,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:20:01,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:20:01,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:20:01,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:20:01,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:20:01,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:20:01,873 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:20:01,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:20:01,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:20:01,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:20:01,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:20:01,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:20:01,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:20:01,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:20:01,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 13:20:01,875 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 13:20:01,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 13:20:01,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:20:01,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:20:01,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:20:01,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:20:01,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:20:01,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:20:01,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:20:01,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:20:01,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:20:01,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:20:01,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:20:01,878 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 13:20:01,878 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 13:20:01,879 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:20:01,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:20:01,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:20:01,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:20:01,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 13:20:01,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a691d0c7049cc6934dd4c9eebe75a3ba34b64a09862ea689fabb3c0e0e6b0c [2021-12-22 13:20:02,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:20:02,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:20:02,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:20:02,148 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:20:02,149 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:20:02,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c [2021-12-22 13:20:02,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f136c8467/8d0ec30fc023413f82fa1de59d4d28aa/FLAG0977fd462 [2021-12-22 13:20:02,582 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:20:02,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_4-2a.c.cil.c [2021-12-22 13:20:02,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f136c8467/8d0ec30fc023413f82fa1de59d4d28aa/FLAG0977fd462 [2021-12-22 13:20:02,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f136c8467/8d0ec30fc023413f82fa1de59d4d28aa [2021-12-22 13:20:02,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:20:02,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:20:02,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:20:02,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:20:02,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:20:02,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:02,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743b2882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02, skipping insertion in model container [2021-12-22 13:20:02,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:02,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:20:02,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:20:02,820 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_7+soft_float_4-2a.c.cil.c[1995,2008] [2021-12-22 13:20:02,825 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_7+soft_float_4-2a.c.cil.c[2389,2402] [2021-12-22 13:20:02,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:20:02,888 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:20:02,902 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_7+soft_float_4-2a.c.cil.c[1995,2008] [2021-12-22 13:20:02,904 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_7+soft_float_4-2a.c.cil.c[2389,2402] [2021-12-22 13:20:02,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:20:02,948 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:20:02,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02 WrapperNode [2021-12-22 13:20:02,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:20:02,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:20:02,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:20:02,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:20:02,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:02,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:02,990 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-22 13:20:02,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:20:02,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:20:02,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:20:02,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:20:02,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:02,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:03,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:03,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:03,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:03,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:03,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:03,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:20:03,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:20:03,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:20:03,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:20:03,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (1/1) ... [2021-12-22 13:20:03,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:20:03,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:20:03,062 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) [2021-12-22 13:20:03,078 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 [2021-12-22 13:20:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:20:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 13:20:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-22 13:20:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-22 13:20:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-22 13:20:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-22 13:20:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:20:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:20:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:20:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:20:03,141 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:20:03,142 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:20:05,558 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:20:05,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:20:05,563 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:20:05,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:20:05 BoogieIcfgContainer [2021-12-22 13:20:05,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:20:05,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:20:05,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:20:05,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:20:05,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:20:02" (1/3) ... [2021-12-22 13:20:05,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e57fc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:20:05, skipping insertion in model container [2021-12-22 13:20:05,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:02" (2/3) ... [2021-12-22 13:20:05,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e57fc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:20:05, skipping insertion in model container [2021-12-22 13:20:05,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:20:05" (3/3) ... [2021-12-22 13:20:05,593 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_4-2a.c.cil.c [2021-12-22 13:20:05,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:20:05,599 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:20:05,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:20:05,643 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:20:05,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:20:05,652 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) [2021-12-22 13:20:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:20:05,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:20:05,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:20:05,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:20:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:20:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-22 13:20:05,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 13:20:05,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570439425] [2021-12-22 13:20:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:20:05,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 13:20:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 13:20:05,669 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) [2021-12-22 13:20:05,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 13:20:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:20:06,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 13:20:06,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:20:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:20:06,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:20:06,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 13:20:06,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570439425] [2021-12-22 13:20:06,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570439425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:20:06,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:20:06,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:20:06,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371099401] [2021-12-22 13:20:06,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:20:06,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:20:06,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 13:20:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:20:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:20:06,090 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) [2021-12-22 13:20:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:20:06,108 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-22 13:20:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:20:06,110 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 [2021-12-22 13:20:06,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:20:06,116 INFO L225 Difference]: With dead ends: 121 [2021-12-22 13:20:06,116 INFO L226 Difference]: Without dead ends: 56 [2021-12-22 13:20:06,119 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:20:06,123 INFO L933 BasicCegarLoop]: 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 [2021-12-22 13:20:06,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:20:06,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-22 13:20:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-22 13:20:06,150 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) [2021-12-22 13:20:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-22 13:20:06,158 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-22 13:20:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:20:06,158 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-22 13:20:06,159 INFO L471 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) [2021-12-22 13:20:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-22 13:20:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:20:06,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:20:06,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:20:06,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:20:06,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 13:20:06,375 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:20:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:20:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-22 13:20:06,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 13:20:06,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005275451] [2021-12-22 13:20:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:20:06,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 13:20:06,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 13:20:06,378 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) [2021-12-22 13:20:06,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process