./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 f4b24e32 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-?-f4b24e3 [2022-07-13 21:25:42,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:25:42,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:25:42,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:25:42,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:25:42,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:25:42,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:25:42,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:25:42,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:25:42,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:25:42,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:25:42,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:25:42,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:25:42,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:25:42,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:25:42,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:25:42,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:25:42,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:25:42,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:25:42,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:25:42,738 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:25:42,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:25:42,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:25:42,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:25:42,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:25:42,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:25:42,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:25:42,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:25:42,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:25:42,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:25:42,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:25:42,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:25:42,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:25:42,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:25:42,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:25:42,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:25:42,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:25:42,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:25:42,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:25:42,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:25:42,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:25:42,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:25:42,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:25:42,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:25:42,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:25:42,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:25:42,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:25:42,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:25:42,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:25:42,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:25:42,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:25:42,778 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:25:42,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:25:42,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:25:42,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:25:42,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:25:42,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:25:42,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:25:42,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:25:42,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:25:42,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:25:42,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:25:42,780 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:25:42,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:25:42,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:25:42,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:25:42,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:25:42,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:25:42,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:25:42,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:25:42,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:25:42,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:25:42,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:25:42,782 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:25:42,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:25:42,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:25:42,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2022-07-13 21:25:42,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:25:43,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:25:43,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:25:43,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:25:43,006 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:25:43,007 INFO L432 ainManager$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 [2022-07-13 21:25:43,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665d00f58/f0e4ee9a806e461e9f20604caebfa337/FLAGa60e062c7 [2022-07-13 21:25:43,416 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:25:43,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-07-13 21:25:43,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665d00f58/f0e4ee9a806e461e9f20604caebfa337/FLAGa60e062c7 [2022-07-13 21:25:43,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665d00f58/f0e4ee9a806e461e9f20604caebfa337 [2022-07-13 21:25:43,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:25:43,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:25:43,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:25:43,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:25:43,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:25:43,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60680b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43, skipping insertion in model container [2022-07-13 21:25:43,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:25:43,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:25:43,645 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] [2022-07-13 21:25:43,651 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] [2022-07-13 21:25:43,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:25:43,713 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:25:43,732 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] [2022-07-13 21:25:43,734 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] [2022-07-13 21:25:43,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:25:43,765 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:25:43,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43 WrapperNode [2022-07-13 21:25:43,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:25:43,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:25:43,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:25:43,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:25:43,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,811 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-13 21:25:43,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:25:43,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:25:43,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:25:43,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:25:43,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:25:43,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:25:43,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:25:43,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:25:43,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (1/1) ... [2022-07-13 21:25:43,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:25:43,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:25:43,884 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) [2022-07-13 21:25:43,903 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 [2022-07-13 21:25:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:25:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-13 21:25:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-13 21:25:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-13 21:25:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-13 21:25:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:25:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:25:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:25:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 21:25:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 21:25:44,026 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:25:44,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:25:44,350 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:25:44,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:25:44,356 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:25:44,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:44 BoogieIcfgContainer [2022-07-13 21:25:44,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:25:44,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:25:44,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:25:44,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:25:44,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:25:43" (1/3) ... [2022-07-13 21:25:44,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fbc754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:25:44, skipping insertion in model container [2022-07-13 21:25:44,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:43" (2/3) ... [2022-07-13 21:25:44,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fbc754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:25:44, skipping insertion in model container [2022-07-13 21:25:44,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:44" (3/3) ... [2022-07-13 21:25:44,363 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2022-07-13 21:25:44,372 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:25:44,372 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:25:44,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:25:44,422 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@8d41686, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f014bed [2022-07-13 21:25:44,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:25:44,425 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) [2022-07-13 21:25:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 21:25:44,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:25:44,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:25:44,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:25:44,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:25:44,433 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-13 21:25:44,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:25:44,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881089203] [2022-07-13 21:25:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:25:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:25:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:25:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:25:44,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:25:44,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881089203] [2022-07-13 21:25:44,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881089203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:25:44,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:25:44,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:25:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321862021] [2022-07-13 21:25:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:25:44,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 21:25:44,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:25:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 21:25:44,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 21:25:44,549 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) [2022-07-13 21:25:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:25:44,591 INFO L93 Difference]: Finished difference Result 189 states and 310 transitions. [2022-07-13 21:25:44,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 21:25:44,593 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 [2022-07-13 21:25:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:25:44,601 INFO L225 Difference]: With dead ends: 189 [2022-07-13 21:25:44,602 INFO L226 Difference]: Without dead ends: 90 [2022-07-13 21:25:44,607 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 [2022-07-13 21:25:44,610 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 [2022-07-13 21:25:44,611 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] [2022-07-13 21:25:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-13 21:25:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-13 21:25:44,644 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) [2022-07-13 21:25:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2022-07-13 21:25:44,651 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 7 [2022-07-13 21:25:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:25:44,651 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2022-07-13 21:25:44,651 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) [2022-07-13 21:25:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2022-07-13 21:25:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 21:25:44,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:25:44,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:25:44,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:25:44,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:25:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:25:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-13 21:25:44,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:25:44,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739659386] [2022-07-13 21:25:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:25:44,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:25:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:25:44,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:25:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:25:44,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:25:44,710 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:25:44,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-13 21:25:44,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-13 21:25:44,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:25:44,715 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 21:25:44,717 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:25:44,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:25:44 BoogieIcfgContainer [2022-07-13 21:25:44,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:25:44,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:25:44,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:25:44,736 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:25:44,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:44" (3/4) ... [2022-07-13 21:25:44,738 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 21:25:44,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:25:44,740 INFO L158 Benchmark]: Toolchain (without parser) took 1297.45ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 66.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2022-07-13 21:25:44,740 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:25:44,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.37ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 84.3MB in the end (delta: 800.5kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 21:25:44,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.78ms. Allocated memory is still 113.2MB. Free memory was 84.3MB in the beginning and 82.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:25:44,744 INFO L158 Benchmark]: Boogie Preprocessor took 44.39ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 80.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:25:44,744 INFO L158 Benchmark]: RCFGBuilder took 500.63ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 62.5MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-13 21:25:44,745 INFO L158 Benchmark]: TraceAbstraction took 376.81ms. Allocated memory is still 113.2MB. Free memory was 62.1MB in the beginning and 67.2MB in the end (delta: -5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:25:44,745 INFO L158 Benchmark]: Witness Printer took 2.83ms. Allocated memory is still 113.2MB. Free memory was 67.2MB in the beginning and 66.8MB in the end (delta: 406.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:25:44,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.37ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 84.3MB in the end (delta: 800.5kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.78ms. Allocated memory is still 113.2MB. Free memory was 84.3MB in the beginning and 82.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.39ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 80.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 500.63ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 62.5MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 376.81ms. Allocated memory is still 113.2MB. Free memory was 62.1MB in the beginning and 67.2MB in the end (delta: -5.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.83ms. Allocated memory is still 113.2MB. Free memory was 67.2MB in the beginning and 66.8MB in the end (delta: 406.3kB). 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 [2022-07-13 21:25:44,776 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-?-f4b24e3 [2022-07-13 21:25:46,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:25:46,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:25:46,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:25:46,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:25:46,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:25:46,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:25:46,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:25:46,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:25:46,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:25:46,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:25:46,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:25:46,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:25:46,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:25:46,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:25:46,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:25:46,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:25:46,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:25:46,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:25:46,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:25:46,546 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:25:46,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:25:46,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:25:46,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:25:46,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:25:46,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:25:46,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:25:46,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:25:46,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:25:46,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:25:46,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:25:46,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:25:46,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:25:46,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:25:46,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:25:46,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:25:46,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:25:46,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:25:46,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:25:46,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:25:46,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:25:46,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:25:46,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 21:25:46,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:25:46,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:25:46,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:25:46,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:25:46,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:25:46,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:25:46,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:25:46,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:25:46,593 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:25:46,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:25:46,594 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:25:46,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:25:46,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:25:46,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:25:46,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:25:46,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:25:46,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 21:25:46,595 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 21:25:46,595 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 21:25:46,596 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:25:46,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:25:46,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:25:46,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:25:46,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:25:46,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:25:46,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:25:46,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:25:46,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:25:46,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:25:46,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:25:46,597 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 21:25:46,597 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 21:25:46,598 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:25:46,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:25:46,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:25:46,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 21:25:46,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2022-07-13 21:25:46,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:25:46,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:25:46,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:25:46,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:25:46,884 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:25:46,885 INFO L432 ainManager$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 [2022-07-13 21:25:46,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fce4c68/882bc999b4a04a90b22592b27495cde6/FLAGd295ad10c [2022-07-13 21:25:47,330 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:25:47,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-07-13 21:25:47,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fce4c68/882bc999b4a04a90b22592b27495cde6/FLAGd295ad10c [2022-07-13 21:25:47,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fce4c68/882bc999b4a04a90b22592b27495cde6 [2022-07-13 21:25:47,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:25:47,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:25:47,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:25:47,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:25:47,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:25:47,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1b73ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47, skipping insertion in model container [2022-07-13 21:25:47,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:25:47,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:25:47,551 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] [2022-07-13 21:25:47,558 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] [2022-07-13 21:25:47,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:25:47,616 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:25:47,629 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] [2022-07-13 21:25:47,631 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] [2022-07-13 21:25:47,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:25:47,665 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:25:47,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47 WrapperNode [2022-07-13 21:25:47,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:25:47,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:25:47,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:25:47,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:25:47,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,714 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-13 21:25:47,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:25:47,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:25:47,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:25:47,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:25:47,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:25:47,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:25:47,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:25:47,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:25:47,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (1/1) ... [2022-07-13 21:25:47,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:25:47,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:25:47,786 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) [2022-07-13 21:25:47,794 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 [2022-07-13 21:25:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:25:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 21:25:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-13 21:25:47,823 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-13 21:25:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-13 21:25:47,823 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-13 21:25:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:25:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:25:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 21:25:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 21:25:47,875 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:25:47,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:25:50,308 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:25:50,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:25:50,313 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:25:50,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:50 BoogieIcfgContainer [2022-07-13 21:25:50,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:25:50,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:25:50,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:25:50,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:25:50,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:25:47" (1/3) ... [2022-07-13 21:25:50,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e0f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:25:50, skipping insertion in model container [2022-07-13 21:25:50,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:47" (2/3) ... [2022-07-13 21:25:50,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e0f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:25:50, skipping insertion in model container [2022-07-13 21:25:50,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:50" (3/3) ... [2022-07-13 21:25:50,320 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2022-07-13 21:25:50,329 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:25:50,329 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:25:50,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:25:50,364 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@5b2bcabd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@493ee248 [2022-07-13 21:25:50,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:25:50,367 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) [2022-07-13 21:25:50,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 21:25:50,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:25:50,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:25:50,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:25:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:25:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-13 21:25:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 21:25:50,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397569900] [2022-07-13 21:25:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:25:50,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 21:25:50,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 21:25:50,386 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) [2022-07-13 21:25:50,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 21:25:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:25:50,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 21:25:50,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:25:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:25:50,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:25:50,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 21:25:50,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397569900] [2022-07-13 21:25:50,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397569900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:25:50,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:25:50,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:25:50,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925798044] [2022-07-13 21:25:50,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:25:50,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 21:25:50,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 21:25:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 21:25:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 21:25:50,819 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) [2022-07-13 21:25:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:25:50,847 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-07-13 21:25:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 21:25:50,849 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 [2022-07-13 21:25:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:25:50,855 INFO L225 Difference]: With dead ends: 121 [2022-07-13 21:25:50,855 INFO L226 Difference]: Without dead ends: 56 [2022-07-13 21:25:50,858 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 [2022-07-13 21:25:50,861 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 [2022-07-13 21:25:50,864 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] [2022-07-13 21:25:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-13 21:25:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-13 21:25:50,907 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) [2022-07-13 21:25:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-07-13 21:25:50,914 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-07-13 21:25:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:25:50,915 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-07-13 21:25:50,915 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) [2022-07-13 21:25:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-07-13 21:25:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 21:25:50,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:25:50,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:25:50,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 21:25:51,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 21:25:51,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:25:51,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:25:51,134 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-13 21:25:51,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 21:25:51,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669574572] [2022-07-13 21:25:51,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:25:51,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 21:25:51,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 21:25:51,139 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) [2022-07-13 21:25:51,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process