./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_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 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:42:40,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:42:40,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:42:40,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:42:40,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:42:40,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:42:40,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:42:40,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:42:40,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:42:40,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:42:40,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:42:40,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:42:40,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:42:40,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:42:40,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:42:40,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:42:40,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:42:40,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:42:40,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:42:40,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:42:40,409 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:42:40,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:42:40,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:42:40,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:42:40,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:42:40,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:42:40,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:42:40,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:42:40,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:42:40,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:42:40,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:42:40,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:42:40,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:42:40,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:42:40,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:42:40,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:42:40,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:42:40,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:42:40,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:42:40,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:42:40,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:42:40,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:42:40,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:42:40,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:42:40,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:42:40,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:42:40,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:42:40,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:42:40,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:42:40,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:42:40,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:42:40,439 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:42:40,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:42:40,439 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:42:40,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:42:40,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:42:40,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:42:40,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:42:40,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:42:40,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:42:40,440 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:42:40,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:42:40,441 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:42:40,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:42:40,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:42:40,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:42:40,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:42:40,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:42:40,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:42:40,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:42:40,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:42:40,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:42:40,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:42:40,442 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:42:40,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:42:40,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:42:40,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 [2022-07-12 09:42:40,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:42:40,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:42:40,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:42:40,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:42:40,669 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:42:40,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2022-07-12 09:42:40,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4687eec3d/105a0e90b525453fb29a866c0f2918cb/FLAGeb5577812 [2022-07-12 09:42:41,086 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:42:41,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2022-07-12 09:42:41,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4687eec3d/105a0e90b525453fb29a866c0f2918cb/FLAGeb5577812 [2022-07-12 09:42:41,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4687eec3d/105a0e90b525453fb29a866c0f2918cb [2022-07-12 09:42:41,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:42:41,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:42:41,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:42:41,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:42:41,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:42:41,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae1acd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41, skipping insertion in model container [2022-07-12 09:42:41,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:42:41,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:42:41,662 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_2a.c.cil.c[1998,2011] [2022-07-12 09:42:41,667 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_2a.c.cil.c[2367,2380] [2022-07-12 09:42:41,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:42:41,738 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:42:41,757 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_2a.c.cil.c[1998,2011] [2022-07-12 09:42:41,758 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_2a.c.cil.c[2367,2380] [2022-07-12 09:42:41,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:42:41,799 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:42:41,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41 WrapperNode [2022-07-12 09:42:41,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:42:41,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:42:41,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:42:41,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:42:41,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,843 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 199 [2022-07-12 09:42:41,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:42:41,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:42:41,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:42:41,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:42:41,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:42:41,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:42:41,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:42:41,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:42:41,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (1/1) ... [2022-07-12 09:42:41,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:42:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:42:41,908 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) [2022-07-12 09:42:41,914 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 [2022-07-12 09:42:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:42:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:42:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:42:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:42:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:42:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:42:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:42:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:42:42,030 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:42:42,031 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:42:42,351 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:42:42,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:42:42,356 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:42:42,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:42:42 BoogieIcfgContainer [2022-07-12 09:42:42,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:42:42,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:42:42,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:42:42,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:42:42,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:42:41" (1/3) ... [2022-07-12 09:42:42,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bb89d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:42:42, skipping insertion in model container [2022-07-12 09:42:42,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:41" (2/3) ... [2022-07-12 09:42:42,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bb89d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:42:42, skipping insertion in model container [2022-07-12 09:42:42,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:42:42" (3/3) ... [2022-07-12 09:42:42,366 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_2a.c.cil.c [2022-07-12 09:42:42,377 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:42:42,378 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:42:42,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:42:42,438 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@1636d1e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e7d68c3 [2022-07-12 09:42:42,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:42:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 09:42:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:42:42,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:42:42,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:42:42,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:42:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:42:42,454 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-12 09:42:42,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:42:42,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303648204] [2022-07-12 09:42:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:42:42,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:42:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:42:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:42:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:42:42,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303648204] [2022-07-12 09:42:42,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303648204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:42:42,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:42:42,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:42:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136527054] [2022-07-12 09:42:42,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:42:42,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:42:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:42:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:42:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:42:42,598 INFO L87 Difference]: Start difference. First operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2022-07-12 09:42:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:42:42,621 INFO L93 Difference]: Finished difference Result 189 states and 311 transitions. [2022-07-12 09:42:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:42:42,623 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 [2022-07-12 09:42:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:42:42,628 INFO L225 Difference]: With dead ends: 189 [2022-07-12 09:42:42,628 INFO L226 Difference]: Without dead ends: 88 [2022-07-12 09:42:42,630 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 [2022-07-12 09:42:42,633 INFO L413 NwaCegarLoop]: 140 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, 140 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 [2022-07-12 09:42:42,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:42:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-12 09:42:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-07-12 09:42:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 09:42:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2022-07-12 09:42:42,659 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 7 [2022-07-12 09:42:42,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:42:42,659 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2022-07-12 09:42:42,659 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) [2022-07-12 09:42:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2022-07-12 09:42:42,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:42:42,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:42:42,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:42:42,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:42:42,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:42:42,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:42:42,662 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-12 09:42:42,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:42:42,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499048324] [2022-07-12 09:42:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:42:42,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:42:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:42:42,673 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:42:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:42:42,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 09:42:42,703 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:42:42,705 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:42:42,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:42:42,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:42:42,709 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:42:42,711 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:42:42,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:42:42 BoogieIcfgContainer [2022-07-12 09:42:42,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:42:42,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:42:42,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:42:42,725 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:42:42,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:42:42" (3/4) ... [2022-07-12 09:42:42,727 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 09:42:42,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:42:42,728 INFO L158 Benchmark]: Toolchain (without parser) took 1243.72ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 80.8MB in the beginning and 102.0MB in the end (delta: -21.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-07-12 09:42:42,728 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:42:42,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.54ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 80.6MB in the beginning and 113.5MB in the end (delta: -33.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-07-12 09:42:42,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.32ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 111.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:42:42,729 INFO L158 Benchmark]: Boogie Preprocessor took 41.34ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 109.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:42:42,730 INFO L158 Benchmark]: RCFGBuilder took 471.42ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 90.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-12 09:42:42,730 INFO L158 Benchmark]: TraceAbstraction took 365.68ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 102.6MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:42:42,730 INFO L158 Benchmark]: Witness Printer took 2.67ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 102.0MB in the end (delta: 598.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:42:42,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.54ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 80.6MB in the beginning and 113.5MB in the end (delta: -33.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.32ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 111.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.34ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 109.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.42ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 90.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 365.68ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 102.6MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.67ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 102.0MB in the end (delta: 598.5kB). 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: [L322] COND TRUE __VERIFIER_nondet_int() [L323] 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: 60]: 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 3 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 140 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, 140 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 [2022-07-12 09:42:42,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_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 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:42:44,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:42:44,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:42:44,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:42:44,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:42:44,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:42:44,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:42:44,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:42:44,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:42:44,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:42:44,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:42:44,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:42:44,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:42:44,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:42:44,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:42:44,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:42:44,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:42:44,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:42:44,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:42:44,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:42:44,706 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:42:44,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:42:44,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:42:44,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:42:44,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:42:44,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:42:44,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:42:44,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:42:44,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:42:44,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:42:44,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:42:44,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:42:44,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:42:44,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:42:44,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:42:44,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:42:44,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:42:44,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:42:44,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:42:44,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:42:44,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:42:44,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:42:44,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 09:42:44,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:42:44,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:42:44,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:42:44,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:42:44,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:42:44,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:42:44,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:42:44,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:42:44,757 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:42:44,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:42:44,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:42:44,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:42:44,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:42:44,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:42:44,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:42:44,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:42:44,758 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 09:42:44,758 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 09:42:44,758 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 09:42:44,758 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:42:44,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:42:44,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:42:44,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:42:44,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:42:44,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:42:44,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:42:44,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:42:44,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:42:44,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:42:44,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:42:44,760 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 09:42:44,760 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 09:42:44,760 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:42:44,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:42:44,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:42:44,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 09:42:44,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022d3c5901739211c5eb00a5826c62b3632d6c52c21250401c080cec1ded6145 [2022-07-12 09:42:45,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:42:45,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:42:45,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:42:45,036 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:42:45,036 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:42:45,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2022-07-12 09:42:45,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e708902/f816bf93faff4d4d97f79f2501921324/FLAG4ec8e60f5 [2022-07-12 09:42:45,436 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:42:45,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_2a.c.cil.c [2022-07-12 09:42:45,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e708902/f816bf93faff4d4d97f79f2501921324/FLAG4ec8e60f5 [2022-07-12 09:42:45,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e708902/f816bf93faff4d4d97f79f2501921324 [2022-07-12 09:42:45,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:42:45,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:42:45,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:42:45,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:42:45,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:42:45,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:42:45" (1/1) ... [2022-07-12 09:42:45,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c59f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:45, skipping insertion in model container [2022-07-12 09:42:45,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:42:45" (1/1) ... [2022-07-12 09:42:45,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:42:45,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:42:45,990 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_2a.c.cil.c[1998,2011] [2022-07-12 09:42:45,993 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_2a.c.cil.c[2367,2380] [2022-07-12 09:42:46,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:42:46,034 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:42:46,044 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_2a.c.cil.c[1998,2011] [2022-07-12 09:42:46,045 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_2a.c.cil.c[2367,2380] [2022-07-12 09:42:46,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:42:46,077 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:42:46,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46 WrapperNode [2022-07-12 09:42:46,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:42:46,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:42:46,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:42:46,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:42:46,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,122 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-07-12 09:42:46,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:42:46,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:42:46,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:42:46,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:42:46,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:42:46,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:42:46,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:42:46,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:42:46,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (1/1) ... [2022-07-12 09:42:46,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:42:46,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:42:46,187 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) [2022-07-12 09:42:46,233 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 [2022-07-12 09:42:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:42:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 09:42:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:42:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:42:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:42:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:42:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:42:46,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:42:46,332 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:42:46,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:42:48,768 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:42:48,772 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:42:48,773 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:42:48,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:42:48 BoogieIcfgContainer [2022-07-12 09:42:48,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:42:48,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:42:48,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:42:48,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:42:48,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:42:45" (1/3) ... [2022-07-12 09:42:48,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256635fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:42:48, skipping insertion in model container [2022-07-12 09:42:48,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:42:46" (2/3) ... [2022-07-12 09:42:48,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256635fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:42:48, skipping insertion in model container [2022-07-12 09:42:48,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:42:48" (3/3) ... [2022-07-12 09:42:48,779 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_2a.c.cil.c [2022-07-12 09:42:48,788 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:42:48,788 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:42:48,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:42:48,823 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@fbaf29f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@af51f72 [2022-07-12 09:42:48,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:42:48,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 09:42:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:42:48,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:42:48,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:42:48,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:42:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:42:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-12 09:42:48,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:42:48,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088825481] [2022-07-12 09:42:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:42:48,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:42:48,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:42:48,849 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) [2022-07-12 09:42:48,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 09:42:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:42:49,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 09:42:49,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:42:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:42:49,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:42:49,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 09:42:49,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088825481] [2022-07-12 09:42:49,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088825481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:42:49,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:42:49,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:42:49,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600626103] [2022-07-12 09:42:49,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:42:49,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:42:49,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 09:42:49,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:42:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:42:49,268 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2022-07-12 09:42:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:42:49,302 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-07-12 09:42:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:42:49,306 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 [2022-07-12 09:42:49,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:42:49,316 INFO L225 Difference]: With dead ends: 117 [2022-07-12 09:42:49,316 INFO L226 Difference]: Without dead ends: 52 [2022-07-12 09:42:49,319 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 [2022-07-12 09:42:49,323 INFO L413 NwaCegarLoop]: 82 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, 82 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 [2022-07-12 09:42:49,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:42:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-12 09:42:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-07-12 09:42:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 09:42:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-07-12 09:42:49,367 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-07-12 09:42:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:42:49,367 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-07-12 09:42:49,368 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) [2022-07-12 09:42:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-07-12 09:42:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:42:49,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:42:49,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:42:49,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:42:49,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:42:49,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:42:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:42:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-12 09:42:49,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:42:49,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163435575] [2022-07-12 09:42:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:42:49,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:42:49,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:42:49,581 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) [2022-07-12 09:42:49,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process