./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_6+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_6+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 f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:02:17,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:02:17,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:02:17,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:02:17,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:02:17,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:02:17,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:02:17,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:02:17,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:02:17,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:02:17,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:02:17,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:02:17,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:02:17,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:02:17,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:02:17,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:02:17,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:02:17,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:02:17,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:02:17,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:02:17,678 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:02:17,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:02:17,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:02:17,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:02:17,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:02:17,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:02:17,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:02:17,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:02:17,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:02:17,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:02:17,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:02:17,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:02:17,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:02:17,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:02:17,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:02:17,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:02:17,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:02:17,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:02:17,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:02:17,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:02:17,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:02:17,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:02:17,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:02:17,720 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:02:17,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:02:17,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:02:17,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:02:17,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:02:17,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:02:17,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:02:17,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:02:17,722 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:02:17,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:02:17,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:02:17,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:02:17,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:02:17,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:02:17,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:02:17,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:02:17,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:02:17,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:02:17,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:02:17,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:02:17,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:02:17,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:02:17,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:02:17,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:02:17,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:02:17,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:02:17,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:02:17,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:02:17,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:02:17,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:02:17,727 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:02:17,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:02:17,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:02:17,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2022-07-22 21:02:17,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:02:17,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:02:17,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:02:17,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:02:17,919 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:02:17,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-07-22 21:02:17,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f1677c6/07c0bb5ce7234d1faf6fdd15be1962f8/FLAG36af1af21 [2022-07-22 21:02:18,389 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:02:18,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-07-22 21:02:18,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f1677c6/07c0bb5ce7234d1faf6fdd15be1962f8/FLAG36af1af21 [2022-07-22 21:02:18,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f1677c6/07c0bb5ce7234d1faf6fdd15be1962f8 [2022-07-22 21:02:18,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:02:18,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:02:18,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:02:18,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:02:18,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:02:18,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290bc177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18, skipping insertion in model container [2022-07-22 21:02:18,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:02:18,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:02:18,595 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-22 21:02:18,601 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-22 21:02:18,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:02:18,664 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:02:18,676 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-22 21:02:18,677 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-22 21:02:18,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:02:18,712 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:02:18,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18 WrapperNode [2022-07-22 21:02:18,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:02:18,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:02:18,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:02:18,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:02:18,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,750 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-22 21:02:18,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:02:18,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:02:18,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:02:18,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:02:18,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:02:18,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:02:18,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:02:18,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:02:18,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (1/1) ... [2022-07-22 21:02:18,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:02:18,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:02:18,840 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 21:02:18,856 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 21:02:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:02:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 21:02:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 21:02:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-22 21:02:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-22 21:02:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:02:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:02:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:02:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 21:02:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 21:02:18,975 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:02:18,976 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:02:19,294 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:02:19,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:02:19,302 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:02:19,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:02:19 BoogieIcfgContainer [2022-07-22 21:02:19,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:02:19,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:02:19,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:02:19,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:02:19,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:02:18" (1/3) ... [2022-07-22 21:02:19,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130847f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:02:19, skipping insertion in model container [2022-07-22 21:02:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:18" (2/3) ... [2022-07-22 21:02:19,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130847f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:02:19, skipping insertion in model container [2022-07-22 21:02:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:02:19" (3/3) ... [2022-07-22 21:02:19,310 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2022-07-22 21:02:19,318 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:02:19,319 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:02:19,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:02:19,371 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@16d2a330, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@26cc6faf [2022-07-22 21:02:19,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 21:02:19,374 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 21:02:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:02:19,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:02:19,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:02:19,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:02:19,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:02:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-22 21:02:19,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:02:19,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675687904] [2022-07-22 21:02:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:02:19,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:02:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:02:19,489 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 21:02:19,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:02:19,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675687904] [2022-07-22 21:02:19,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675687904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:02:19,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:02:19,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:02:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874504364] [2022-07-22 21:02:19,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:02:19,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:02:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:02:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:02:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:02:19,521 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 21:02:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 21:02:19,560 INFO L93 Difference]: Finished difference Result 189 states and 310 transitions. [2022-07-22 21:02:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:02:19,562 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 21:02:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 21:02:19,571 INFO L225 Difference]: With dead ends: 189 [2022-07-22 21:02:19,571 INFO L226 Difference]: Without dead ends: 90 [2022-07-22 21:02:19,577 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 21:02:19,579 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 21:02:19,580 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 21:02:19,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-22 21:02:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-22 21:02:19,612 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 21:02:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2022-07-22 21:02:19,619 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 7 [2022-07-22 21:02:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 21:02:19,619 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2022-07-22 21:02:19,620 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 21:02:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2022-07-22 21:02:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:02:19,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:02:19,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:02:19,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:02:19,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:02:19,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:02:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-22 21:02:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:02:19,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518716765] [2022-07-22 21:02:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:02:19,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:02:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:02:19,647 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:02:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:02:19,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:02:19,683 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:02:19,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 21:02:19,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 21:02:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:02:19,688 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:02:19,691 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:02:19,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:02:19 BoogieIcfgContainer [2022-07-22 21:02:19,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:02:19,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:02:19,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:02:19,709 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:02:19,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:02:19" (3/4) ... [2022-07-22 21:02:19,711 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 21:02:19,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:02:19,713 INFO L158 Benchmark]: Toolchain (without parser) took 1302.47ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 76.7MB in the beginning and 104.5MB in the end (delta: -27.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 21:02:19,713 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory was 65.5MB in the beginning and 65.5MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:02:19,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.69ms. Allocated memory is still 107.0MB. Free memory was 76.7MB in the beginning and 77.8MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 21:02:19,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.45ms. Allocated memory is still 107.0MB. Free memory was 77.8MB in the beginning and 76.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:02:19,717 INFO L158 Benchmark]: Boogie Preprocessor took 56.66ms. Allocated memory is still 107.0MB. Free memory was 76.2MB in the beginning and 74.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:02:19,717 INFO L158 Benchmark]: RCFGBuilder took 494.62ms. Allocated memory is still 107.0MB. Free memory was 74.3MB in the beginning and 56.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-22 21:02:19,718 INFO L158 Benchmark]: TraceAbstraction took 402.77ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 56.0MB in the beginning and 104.5MB in the end (delta: -48.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:02:19,718 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 142.6MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:02:19,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory was 65.5MB in the beginning and 65.5MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.69ms. Allocated memory is still 107.0MB. Free memory was 76.7MB in the beginning and 77.8MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.45ms. Allocated memory is still 107.0MB. Free memory was 77.8MB in the beginning and 76.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.66ms. Allocated memory is still 107.0MB. Free memory was 76.2MB in the beginning and 74.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.62ms. Allocated memory is still 107.0MB. Free memory was 74.3MB in the beginning and 56.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 402.77ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 56.0MB in the beginning and 104.5MB in the end (delta: -48.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 142.6MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.399f) 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: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 134 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-22 21:02:19,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_6+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 f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:02:21,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:02:21,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:02:21,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:02:21,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:02:21,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:02:21,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:02:21,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:02:21,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:02:21,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:02:21,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:02:21,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:02:21,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:02:21,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:02:21,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:02:21,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:02:21,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:02:21,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:02:21,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:02:21,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:02:21,856 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:02:21,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:02:21,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:02:21,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:02:21,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:02:21,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:02:21,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:02:21,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:02:21,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:02:21,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:02:21,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:02:21,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:02:21,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:02:21,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:02:21,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:02:21,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:02:21,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:02:21,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:02:21,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:02:21,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:02:21,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:02:21,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:02:21,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 21:02:21,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:02:21,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:02:21,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:02:21,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:02:21,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:02:21,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:02:21,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:02:21,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:02:21,905 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:02:21,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:02:21,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:02:21,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:02:21,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:02:21,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:02:21,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:02:21,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:02:21,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 21:02:21,907 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 21:02:21,907 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 21:02:21,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:02:21,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:02:21,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:02:21,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:02:21,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:02:21,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:02:21,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:02:21,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:02:21,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:02:21,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:02:21,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:02:21,909 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 21:02:21,909 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 21:02:21,909 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:02:21,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:02:21,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:02:21,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 21:02:21,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2022-07-22 21:02:22,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:02:22,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:02:22,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:02:22,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:02:22,189 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:02:22,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-07-22 21:02:22,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc8b1d30/37948e7ee1a94496824ff0bd5f308ac7/FLAG3e6d88bb6 [2022-07-22 21:02:22,610 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:02:22,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-07-22 21:02:22,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc8b1d30/37948e7ee1a94496824ff0bd5f308ac7/FLAG3e6d88bb6 [2022-07-22 21:02:22,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc8b1d30/37948e7ee1a94496824ff0bd5f308ac7 [2022-07-22 21:02:22,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:02:22,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:02:22,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:02:22,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:02:22,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:02:22,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f98765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22, skipping insertion in model container [2022-07-22 21:02:22,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:02:22,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:02:22,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-22 21:02:22,783 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-22 21:02:22,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:02:22,812 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:02:22,821 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-22 21:02:22,823 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-22 21:02:22,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:02:22,853 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:02:22,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22 WrapperNode [2022-07-22 21:02:22,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:02:22,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:02:22,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:02:22,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:02:22,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,901 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-22 21:02:22,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:02:22,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:02:22,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:02:22,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:02:22,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:02:22,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:02:22,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:02:22,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:02:22,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (1/1) ... [2022-07-22 21:02:22,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:02:22,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:02:23,025 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 21:02:23,096 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 21:02:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:02:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 21:02:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 21:02:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 21:02:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-22 21:02:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-22 21:02:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:02:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:02:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 21:02:23,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 21:02:23,163 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:02:23,164 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:02:25,657 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:02:25,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:02:25,662 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:02:25,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:02:25 BoogieIcfgContainer [2022-07-22 21:02:25,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:02:25,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:02:25,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:02:25,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:02:25,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:02:22" (1/3) ... [2022-07-22 21:02:25,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a141a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:02:25, skipping insertion in model container [2022-07-22 21:02:25,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:02:22" (2/3) ... [2022-07-22 21:02:25,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a141a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:02:25, skipping insertion in model container [2022-07-22 21:02:25,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:02:25" (3/3) ... [2022-07-22 21:02:25,669 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2022-07-22 21:02:25,677 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:02:25,678 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:02:25,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:02:25,728 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@576a59a5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@758d3efc [2022-07-22 21:02:25,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 21:02:25,731 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 21:02:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:02:25,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:02:25,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:02:25,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:02:25,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:02:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-22 21:02:25,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 21:02:25,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542858708] [2022-07-22 21:02:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:02:25,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 21:02:25,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 21:02:25,757 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 21:02:25,758 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 21:02:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:02:26,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 21:02:26,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:02:26,134 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 21:02:26,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:02:26,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 21:02:26,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542858708] [2022-07-22 21:02:26,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542858708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:02:26,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:02:26,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:02:26,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506206535] [2022-07-22 21:02:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:02:26,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:02:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 21:02:26,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:02:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:02:26,164 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 21:02:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 21:02:26,182 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-07-22 21:02:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:02:26,184 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 21:02:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 21:02:26,189 INFO L225 Difference]: With dead ends: 121 [2022-07-22 21:02:26,189 INFO L226 Difference]: Without dead ends: 56 [2022-07-22 21:02:26,191 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 21:02:26,205 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 21:02:26,206 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 21:02:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-22 21:02:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-22 21:02:26,239 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 21:02:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-07-22 21:02:26,246 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-07-22 21:02:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 21:02:26,246 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-07-22 21:02:26,247 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 21:02:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-07-22 21:02:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:02:26,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:02:26,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:02:26,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 21:02:26,465 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 21:02:26,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:02:26,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:02:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-22 21:02:26,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 21:02:26,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642203911] [2022-07-22 21:02:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:02:26,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 21:02:26,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 21:02:26,491 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 21:02:26,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process