./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_1+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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:54:53,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:54:53,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:54:53,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:54:53,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:54:53,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:54:53,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:54:53,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:54:53,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:54:53,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:54:53,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:54:53,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:54:53,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:54:53,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:54:53,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:54:53,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:54:53,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:54:53,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:54:53,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:54:53,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:54:53,953 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:54:53,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:54:53,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:54:53,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:54:53,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:54:53,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:54:53,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:54:53,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:54:53,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:54:53,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:54:53,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:54:53,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:54:53,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:54:53,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:54:53,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:54:53,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:54:53,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:54:53,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:54:53,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:54:53,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:54:53,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:54:53,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:54:53,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:54:54,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:54:54,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:54:54,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:54:54,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:54:54,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:54:54,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:54:54,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:54:54,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:54:54,012 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:54:54,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:54:54,013 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:54:54,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:54:54,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:54:54,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:54:54,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:54:54,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:54:54,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:54:54,014 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:54:54,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:54:54,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:54:54,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:54:54,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:54:54,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:54:54,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:54:54,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:54:54,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:54:54,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:54:54,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:54:54,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:54:54,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:54:54,018 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:54:54,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:54:54,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:54:54,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2022-07-22 20:54:54,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:54:54,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:54:54,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:54:54,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:54:54,271 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:54:54,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2022-07-22 20:54:54,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a98fc116/242245ebbee345eb90a009b3267e68e3/FLAG751cd0151 [2022-07-22 20:54:54,694 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:54:54,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2022-07-22 20:54:54,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a98fc116/242245ebbee345eb90a009b3267e68e3/FLAG751cd0151 [2022-07-22 20:54:55,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a98fc116/242245ebbee345eb90a009b3267e68e3 [2022-07-22 20:54:55,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:54:55,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:54:55,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:54:55,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:54:55,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:54:55,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3a8dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55, skipping insertion in model container [2022-07-22 20:54:55,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:54:55,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:54:55,291 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2022-07-22 20:54:55,295 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2022-07-22 20:54:55,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:54:55,386 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:54:55,406 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2022-07-22 20:54:55,410 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2022-07-22 20:54:55,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:54:55,464 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:54:55,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55 WrapperNode [2022-07-22 20:54:55,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:54:55,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:54:55,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:54:55,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:54:55,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,514 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-22 20:54:55,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:54:55,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:54:55,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:54:55,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:54:55,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:54:55,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:54:55,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:54:55,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:54:55,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (1/1) ... [2022-07-22 20:54:55,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:54:55,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:54:55,605 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) [2022-07-22 20:54:55,614 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 [2022-07-22 20:54:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:54:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 20:54:55,645 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 20:54:55,645 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-22 20:54:55,646 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-22 20:54:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:54:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:54:55,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:54:55,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 20:54:55,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 20:54:55,709 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:54:55,710 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:54:56,035 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:54:56,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:54:56,043 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 20:54:56,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:54:56 BoogieIcfgContainer [2022-07-22 20:54:56,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:54:56,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:54:56,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:54:56,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:54:56,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:54:55" (1/3) ... [2022-07-22 20:54:56,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f70e3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:54:56, skipping insertion in model container [2022-07-22 20:54:56,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:55" (2/3) ... [2022-07-22 20:54:56,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f70e3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:54:56, skipping insertion in model container [2022-07-22 20:54:56,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:54:56" (3/3) ... [2022-07-22 20:54:56,065 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2022-07-22 20:54:56,077 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:54:56,082 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:54:56,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:54:56,131 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@438ec20a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b469cdb [2022-07-22 20:54:56,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:54:56,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 85 states have internal predecessors, (139), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-22 20:54:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 20:54:56,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:56,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:56,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-22 20:54:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:56,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750850588] [2022-07-22 20:54:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:56,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:56,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:56,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750850588] [2022-07-22 20:54:56,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750850588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:56,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:56,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:54:56,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960087627] [2022-07-22 20:54:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:56,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:54:56,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:54:56,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:54:56,300 INFO L87 Difference]: Start difference. First operand has 97 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 85 states have internal predecessors, (139), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:54:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:56,352 INFO L93 Difference]: Finished difference Result 189 states and 310 transitions. [2022-07-22 20:54:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:54:56,356 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 [2022-07-22 20:54:56,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:56,367 INFO L225 Difference]: With dead ends: 189 [2022-07-22 20:54:56,367 INFO L226 Difference]: Without dead ends: 90 [2022-07-22 20:54:56,374 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 [2022-07-22 20:54:56,378 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:56,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:54:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-22 20:54:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-22 20:54:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 79 states have internal predecessors, (111), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-22 20:54:56,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2022-07-22 20:54:56,452 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 7 [2022-07-22 20:54:56,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:56,453 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2022-07-22 20:54:56,453 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) [2022-07-22 20:54:56,453 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2022-07-22 20:54:56,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 20:54:56,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:56,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:56,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:54:56,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:56,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-22 20:54:56,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:56,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988421930] [2022-07-22 20:54:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:56,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:54:56,493 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 20:54:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:54:56,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 20:54:56,536 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 20:54:56,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 20:54:56,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 20:54:56,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:54:56,542 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 20:54:56,545 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 20:54:56,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 08:54:56 BoogieIcfgContainer [2022-07-22 20:54:56,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 20:54:56,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 20:54:56,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 20:54:56,570 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 20:54:56,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:54:56" (3/4) ... [2022-07-22 20:54:56,573 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 20:54:56,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 20:54:56,575 INFO L158 Benchmark]: Toolchain (without parser) took 1460.27ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.9MB in the beginning and 74.7MB in the end (delta: -25.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:54:56,575 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 86.0MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:54:56,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.05ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.7MB in the beginning and 76.5MB in the end (delta: -27.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 20:54:56,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.02ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 74.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:54:56,580 INFO L158 Benchmark]: Boogie Preprocessor took 61.25ms. Allocated memory is still 104.9MB. Free memory was 74.8MB in the beginning and 73.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:54:56,581 INFO L158 Benchmark]: RCFGBuilder took 466.99ms. Allocated memory is still 104.9MB. Free memory was 72.9MB in the beginning and 54.8MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-22 20:54:56,581 INFO L158 Benchmark]: TraceAbstraction took 522.20ms. Allocated memory is still 104.9MB. Free memory was 54.4MB in the beginning and 75.2MB in the end (delta: -20.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:54:56,582 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 74.7MB in the end (delta: 562.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:54:56,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 86.0MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.05ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.7MB in the beginning and 76.5MB in the end (delta: -27.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.02ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 74.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.25ms. Allocated memory is still 104.9MB. Free memory was 74.8MB in the beginning and 73.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 466.99ms. Allocated memory is still 104.9MB. Free memory was 72.9MB in the beginning and 54.8MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 522.20ms. Allocated memory is still 104.9MB. Free memory was 54.4MB in the beginning and 75.2MB in the end (delta: -20.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 74.7MB in the end (delta: 562.8kB). Peak memory consumption was 2.1MB. 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 < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 134 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s 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 [2022-07-22 20:54:56,631 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_1+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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:54:58,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:54:58,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:54:58,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:54:58,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:54:58,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:54:58,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:54:58,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:54:58,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:54:58,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:54:58,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:54:58,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:54:58,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:54:58,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:54:58,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:54:58,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:54:58,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:54:58,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:54:58,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:54:58,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:54:58,595 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:54:58,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:54:58,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:54:58,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:54:58,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:54:58,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:54:58,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:54:58,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:54:58,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:54:58,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:54:58,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:54:58,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:54:58,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:54:58,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:54:58,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:54:58,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:54:58,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:54:58,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:54:58,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:54:58,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:54:58,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:54:58,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:54:58,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 20:54:58,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:54:58,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:54:58,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:54:58,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:54:58,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:54:58,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:54:58,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:54:58,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:54:58,666 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:54:58,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:54:58,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:54:58,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:54:58,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:54:58,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:54:58,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:54:58,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:54:58,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 20:54:58,669 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 20:54:58,669 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 20:54:58,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:54:58,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:54:58,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:54:58,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:54:58,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:54:58,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:54:58,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:54:58,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:54:58,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:54:58,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:54:58,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:54:58,672 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 20:54:58,672 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 20:54:58,673 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:54:58,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:54:58,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:54:58,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 20:54:58,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2022-07-22 20:54:58,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:54:59,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:54:59,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:54:59,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:54:59,031 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:54:59,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2022-07-22 20:54:59,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414b2cb29/fc912e01000f4c07acfa31b40ecffc88/FLAGee7830f04 [2022-07-22 20:54:59,511 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:54:59,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2022-07-22 20:54:59,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414b2cb29/fc912e01000f4c07acfa31b40ecffc88/FLAGee7830f04 [2022-07-22 20:54:59,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414b2cb29/fc912e01000f4c07acfa31b40ecffc88 [2022-07-22 20:54:59,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:54:59,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:54:59,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:54:59,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:54:59,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:54:59,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:54:59,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151ba14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59, skipping insertion in model container [2022-07-22 20:54:59,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:54:59,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:54:59,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:54:59,776 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2022-07-22 20:54:59,800 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2022-07-22 20:54:59,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:54:59,861 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:54:59,882 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2022-07-22 20:54:59,884 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2022-07-22 20:54:59,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:54:59,941 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:54:59,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59 WrapperNode [2022-07-22 20:54:59,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:54:59,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:54:59,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:54:59,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:54:59,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:54:59,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:54:59,994 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-22 20:54:59,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:54:59,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:54:59,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:54:59,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:55:00,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:55:00,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:55:00,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:55:00,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:55:00,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:55:00,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:55:00,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:55:00,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:55:00,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:55:00,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:55:00,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:55:00,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (1/1) ... [2022-07-22 20:55:00,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:55:00,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:55:00,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:55:00,099 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 [2022-07-22 20:55:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:55:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 20:55:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 20:55:00,125 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 20:55:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-22 20:55:00,125 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-22 20:55:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:55:00,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:55:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 20:55:00,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 20:55:00,185 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:55:00,186 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:55:02,713 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:55:02,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:55:02,723 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 20:55:02,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:55:02 BoogieIcfgContainer [2022-07-22 20:55:02,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:55:02,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:55:02,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:55:02,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:55:02,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:54:59" (1/3) ... [2022-07-22 20:55:02,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497ba61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:55:02, skipping insertion in model container [2022-07-22 20:55:02,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:59" (2/3) ... [2022-07-22 20:55:02,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497ba61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:55:02, skipping insertion in model container [2022-07-22 20:55:02,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:55:02" (3/3) ... [2022-07-22 20:55:02,731 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2022-07-22 20:55:02,743 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:55:02,743 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:55:02,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:55:02,792 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@db551de, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f5693cf [2022-07-22 20:55:02,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:55:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-22 20:55:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 20:55:02,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:02,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:02,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:02,807 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-22 20:55:02,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 20:55:02,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401965983] [2022-07-22 20:55:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:02,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 20:55:02,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 20:55:02,819 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) [2022-07-22 20:55:02,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 20:55:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:03,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 20:55:03,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:55:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:55:03,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:55:03,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 20:55:03,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401965983] [2022-07-22 20:55:03,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401965983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:55:03,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:55:03,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:55:03,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727374881] [2022-07-22 20:55:03,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:55:03,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:55:03,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 20:55:03,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:55:03,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:55:03,230 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:55:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:55:03,267 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-07-22 20:55:03,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:55:03,270 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 [2022-07-22 20:55:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:55:03,283 INFO L225 Difference]: With dead ends: 121 [2022-07-22 20:55:03,284 INFO L226 Difference]: Without dead ends: 56 [2022-07-22 20:55:03,288 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 [2022-07-22 20:55:03,294 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:55:03,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:55:03,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-22 20:55:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-22 20:55:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-22 20:55:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-07-22 20:55:03,344 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-07-22 20:55:03,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:55:03,345 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-07-22 20:55:03,346 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) [2022-07-22 20:55:03,346 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-07-22 20:55:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 20:55:03,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:03,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:03,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:55:03,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 20:55:03,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-22 20:55:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 20:55:03,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476936328] [2022-07-22 20:55:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:03,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 20:55:03,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 20:55:03,572 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) [2022-07-22 20:55:03,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 20:57:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:57:53,318 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 20:58:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:58:52,003 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-22 20:58:52,004 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 20:58:52,005 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 20:58:52,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 20:58:52,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:58:52,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 20:58:52,212 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 20:58:52,215 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 20:58:52,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 08:58:52 BoogieIcfgContainer [2022-07-22 20:58:52,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 20:58:52,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 20:58:52,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 20:58:52,238 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 20:58:52,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:55:02" (3/4) ... [2022-07-22 20:58:52,240 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 20:58:52,266 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 20:58:52,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 20:58:52,267 INFO L158 Benchmark]: Toolchain (without parser) took 232725.35ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 40.1MB in the beginning and 46.2MB in the end (delta: -6.1MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-07-22 20:58:52,268 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 41.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:58:52,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.77ms. Allocated memory is still 60.8MB. Free memory was 40.0MB in the beginning and 39.9MB in the end (delta: 86.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 20:58:52,269 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.85ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 38.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:58:52,269 INFO L158 Benchmark]: Boogie Preprocessor took 56.00ms. Allocated memory is still 60.8MB. Free memory was 38.0MB in the beginning and 36.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:58:52,270 INFO L158 Benchmark]: RCFGBuilder took 2671.36ms. Allocated memory is still 60.8MB. Free memory was 36.2MB in the beginning and 40.0MB in the end (delta: -3.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-07-22 20:58:52,270 INFO L158 Benchmark]: TraceAbstraction took 229509.03ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 39.4MB in the beginning and 47.8MB in the end (delta: -8.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-07-22 20:58:52,271 INFO L158 Benchmark]: Witness Printer took 30.55ms. Allocated memory is still 75.5MB. Free memory was 47.8MB in the beginning and 46.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:58:52,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 41.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.77ms. Allocated memory is still 60.8MB. Free memory was 40.0MB in the beginning and 39.9MB in the end (delta: 86.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.85ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 38.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.00ms. Allocated memory is still 60.8MB. Free memory was 38.0MB in the beginning and 36.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2671.36ms. Allocated memory is still 60.8MB. Free memory was 36.2MB in the beginning and 40.0MB in the end (delta: -3.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 229509.03ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 39.4MB in the beginning and 47.8MB in the end (delta: -8.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Witness Printer took 30.55ms. Allocated memory is still 75.5MB. Free memory was 47.8MB in the beginning and 46.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a 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=0.9793358445167542, result=1.3925530910491943, x=0.9793358445167542] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.9793358445167542, result=1.3925530910491943, x=0.9793358445167542] [L48] reach_error() VAL [IN=0.9793358445167542, result=1.3925530910491943, x=0.9793358445167542] - 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: 229.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 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, 6 GetRequests, 6 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, 170.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-07-22 20:58:52,361 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE