./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_4+soft_float_5a.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 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:41:17,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:41:17,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:41:17,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:41:17,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:41:17,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:41:17,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:41:17,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:41:17,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:41:17,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:41:17,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:41:17,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:41:17,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:41:17,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:41:17,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:41:17,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:41:17,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:41:17,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:41:17,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:41:17,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:41:17,848 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:41:17,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:41:17,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:41:17,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:41:17,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:41:17,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:41:17,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:41:17,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:41:17,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:41:17,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:41:17,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:41:17,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:41:17,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:41:17,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:41:17,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:41:17,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:41:17,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:41:17,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:41:17,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:41:17,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:41:17,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:41:17,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:41:17,879 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:41:17,902 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:41:17,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:41:17,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:41:17,905 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:41:17,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:41:17,906 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:41:17,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:41:17,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:41:17,907 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:41:17,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:41:17,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:41:17,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:41:17,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:41:17,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:41:17,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:41:17,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:41:17,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:41:17,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:41:17,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:41:17,910 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:41:17,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:41:17,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:41:17,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:41:17,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:41:17,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:41:17,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:41:17,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:41:17,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:41:17,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:41:17,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:41:17,913 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:41:17,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:41:17,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:41:17,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 [2022-07-12 09:41:18,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:41:18,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:41:18,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:41:18,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:41:18,164 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:41:18,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2022-07-12 09:41:18,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a7f5976/62b4f9265ab248da948d741cd08cc253/FLAG7f26a1d91 [2022-07-12 09:41:18,642 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:41:18,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2022-07-12 09:41:18,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a7f5976/62b4f9265ab248da948d741cd08cc253/FLAG7f26a1d91 [2022-07-12 09:41:19,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a7f5976/62b4f9265ab248da948d741cd08cc253 [2022-07-12 09:41:19,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:41:19,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:41:19,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:41:19,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:41:19,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:41:19,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb06db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19, skipping insertion in model container [2022-07-12 09:41:19,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:41:19,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:41:19,272 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_4+soft_float_5a.c.cil.c[1999,2012] [2022-07-12 09:41:19,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2022-07-12 09:41:19,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:41:19,359 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:41:19,371 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_4+soft_float_5a.c.cil.c[1999,2012] [2022-07-12 09:41:19,372 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_4+soft_float_5a.c.cil.c[2368,2381] [2022-07-12 09:41:19,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:41:19,410 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:41:19,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19 WrapperNode [2022-07-12 09:41:19,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:41:19,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:41:19,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:41:19,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:41:19,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,490 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 199 [2022-07-12 09:41:19,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:41:19,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:41:19,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:41:19,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:41:19,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:41:19,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:41:19,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:41:19,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:41:19,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (1/1) ... [2022-07-12 09:41:19,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:41:19,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:41:19,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:41:19,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:41:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:41:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:41:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:41:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:41:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:41:19,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:41:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:41:19,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:41:19,751 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:41:19,753 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:41:20,189 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:41:20,196 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:41:20,196 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:41:20,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:41:20 BoogieIcfgContainer [2022-07-12 09:41:20,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:41:20,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:41:20,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:41:20,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:41:20,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:41:19" (1/3) ... [2022-07-12 09:41:20,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bb0f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:41:20, skipping insertion in model container [2022-07-12 09:41:20,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:19" (2/3) ... [2022-07-12 09:41:20,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bb0f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:41:20, skipping insertion in model container [2022-07-12 09:41:20,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:41:20" (3/3) ... [2022-07-12 09:41:20,209 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_5a.c.cil.c [2022-07-12 09:41:20,220 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:41:20,220 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:41:20,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:41:20,266 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@603ea2a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5043ae08 [2022-07-12 09:41:20,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:41:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 09:41:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:41:20,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:41:20,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:41:20,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:41:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:41:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-12 09:41:20,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:41:20,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011426054] [2022-07-12 09:41:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:41:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:41:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:41:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:41:20,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:41:20,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011426054] [2022-07-12 09:41:20,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011426054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:41:20,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:41:20,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:41:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491974038] [2022-07-12 09:41:20,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:41:20,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:41:20,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:41:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:41:20,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:41:20,438 INFO L87 Difference]: Start difference. First operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:41:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:41:20,543 INFO L93 Difference]: Finished difference Result 189 states and 311 transitions. [2022-07-12 09:41:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:41:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:41:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:41:20,554 INFO L225 Difference]: With dead ends: 189 [2022-07-12 09:41:20,554 INFO L226 Difference]: Without dead ends: 88 [2022-07-12 09:41:20,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:41:20,566 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:41:20,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:41:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-12 09:41:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-07-12 09:41:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 09:41:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2022-07-12 09:41:20,622 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 7 [2022-07-12 09:41:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:41:20,623 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2022-07-12 09:41:20,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:41:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2022-07-12 09:41:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:41:20,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:41:20,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:41:20,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:41:20,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:41:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:41:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-12 09:41:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:41:20,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139330408] [2022-07-12 09:41:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:41:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:41:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:41:20,658 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:41:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:41:20,696 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 09:41:20,697 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:41:20,699 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:41:20,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:41:20,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:41:20,706 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:41:20,709 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:41:20,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:41:20 BoogieIcfgContainer [2022-07-12 09:41:20,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:41:20,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:41:20,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:41:20,734 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:41:20,735 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:41:20" (3/4) ... [2022-07-12 09:41:20,737 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 09:41:20,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:41:20,739 INFO L158 Benchmark]: Toolchain (without parser) took 1681.25ms. Allocated memory is still 113.2MB. Free memory was 80.1MB in the beginning and 78.3MB in the end (delta: 1.8MB). Peak memory consumption was 812.0kB. Max. memory is 16.1GB. [2022-07-12 09:41:20,740 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 81.8MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:41:20,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.81ms. Allocated memory is still 113.2MB. Free memory was 80.1MB in the beginning and 84.5MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 09:41:20,743 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.83ms. Allocated memory is still 113.2MB. Free memory was 84.5MB in the beginning and 82.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:41:20,745 INFO L158 Benchmark]: Boogie Preprocessor took 55.18ms. Allocated memory is still 113.2MB. Free memory was 82.5MB in the beginning and 80.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:41:20,745 INFO L158 Benchmark]: RCFGBuilder took 650.27ms. Allocated memory is still 113.2MB. Free memory was 80.3MB in the beginning and 61.5MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-12 09:41:20,746 INFO L158 Benchmark]: TraceAbstraction took 533.04ms. Allocated memory is still 113.2MB. Free memory was 60.9MB in the beginning and 78.3MB in the end (delta: -17.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:41:20,746 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 113.2MB. Free memory is still 78.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:41:20,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 81.8MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.81ms. Allocated memory is still 113.2MB. Free memory was 80.1MB in the beginning and 84.5MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.83ms. Allocated memory is still 113.2MB. Free memory was 84.5MB in the beginning and 82.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.18ms. Allocated memory is still 113.2MB. Free memory was 82.5MB in the beginning and 80.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 650.27ms. Allocated memory is still 113.2MB. Free memory was 80.3MB in the beginning and 61.5MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 533.04ms. Allocated memory is still 113.2MB. Free memory was 60.9MB in the beginning and 78.3MB in the end (delta: -17.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 113.2MB. Free memory is still 78.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39844f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 140 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 09:41:20,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_4+soft_float_5a.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 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:41:22,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:41:22,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:41:22,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:41:22,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:41:22,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:41:22,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:41:22,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:41:22,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:41:22,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:41:22,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:41:22,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:41:22,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:41:22,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:41:22,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:41:22,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:41:22,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:41:22,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:41:22,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:41:22,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:41:22,799 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:41:22,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:41:22,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:41:22,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:41:22,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:41:22,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:41:22,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:41:22,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:41:22,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:41:22,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:41:22,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:41:22,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:41:22,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:41:22,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:41:22,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:41:22,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:41:22,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:41:22,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:41:22,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:41:22,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:41:22,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:41:22,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:41:22,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 09:41:22,858 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:41:22,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:41:22,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:41:22,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:41:22,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:41:22,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:41:22,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:41:22,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:41:22,861 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:41:22,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:41:22,862 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:41:22,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:41:22,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:41:22,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:41:22,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:41:22,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:41:22,872 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 09:41:22,872 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 09:41:22,872 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 09:41:22,872 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:41:22,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:41:22,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:41:22,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:41:22,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:41:22,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:41:22,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:41:22,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:41:22,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:41:22,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:41:22,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:41:22,881 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 09:41:22,881 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 09:41:22,881 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:41:22,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:41:22,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:41:22,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 09:41:22,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 [2022-07-12 09:41:23,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:41:23,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:41:23,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:41:23,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:41:23,182 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:41:23,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2022-07-12 09:41:23,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5de533c/42b0a291a5f246e9af186138070c3d4e/FLAG4c5727a1c [2022-07-12 09:41:23,629 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:41:23,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2022-07-12 09:41:23,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5de533c/42b0a291a5f246e9af186138070c3d4e/FLAG4c5727a1c [2022-07-12 09:41:23,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5de533c/42b0a291a5f246e9af186138070c3d4e [2022-07-12 09:41:23,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:41:23,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:41:23,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:41:23,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:41:23,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:41:23,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:41:23" (1/1) ... [2022-07-12 09:41:23,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c47e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:23, skipping insertion in model container [2022-07-12 09:41:23,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:41:23" (1/1) ... [2022-07-12 09:41:23,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:41:23,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:41:23,914 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_4+soft_float_5a.c.cil.c[1999,2012] [2022-07-12 09:41:23,922 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_4+soft_float_5a.c.cil.c[2368,2381] [2022-07-12 09:41:23,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:41:24,007 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:41:24,024 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_4+soft_float_5a.c.cil.c[1999,2012] [2022-07-12 09:41:24,029 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_4+soft_float_5a.c.cil.c[2368,2381] [2022-07-12 09:41:24,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:41:24,074 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:41:24,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24 WrapperNode [2022-07-12 09:41:24,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:41:24,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:41:24,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:41:24,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:41:24,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,121 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-07-12 09:41:24,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:41:24,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:41:24,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:41:24,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:41:24,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:41:24,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:41:24,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:41:24,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:41:24,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (1/1) ... [2022-07-12 09:41:24,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:41:24,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:41:24,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:41:24,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:41:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:41:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 09:41:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:41:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:41:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:41:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:41:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:41:24,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:41:24,346 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:41:24,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:41:26,842 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:41:26,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:41:26,848 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:41:26,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:41:26 BoogieIcfgContainer [2022-07-12 09:41:26,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:41:26,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:41:26,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:41:26,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:41:26,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:41:23" (1/3) ... [2022-07-12 09:41:26,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34db5836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:41:26, skipping insertion in model container [2022-07-12 09:41:26,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:41:24" (2/3) ... [2022-07-12 09:41:26,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34db5836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:41:26, skipping insertion in model container [2022-07-12 09:41:26,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:41:26" (3/3) ... [2022-07-12 09:41:26,857 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_5a.c.cil.c [2022-07-12 09:41:26,869 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:41:26,869 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:41:26,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:41:26,912 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@785fffa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@391ddffa [2022-07-12 09:41:26,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:41:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 09:41:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:41:26,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:41:26,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:41:26,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:41:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:41:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-12 09:41:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:41:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343836528] [2022-07-12 09:41:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:41:26,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:41:26,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:41:26,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 09:41:26,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 09:41:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:41:27,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 09:41:27,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:41:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:41:27,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:41:27,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 09:41:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343836528] [2022-07-12 09:41:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343836528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:41:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:41:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:41:27,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208218833] [2022-07-12 09:41:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:41:27,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:41:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 09:41:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:41:27,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:41:27,509 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:41:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:41:27,540 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-07-12 09:41:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:41:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:41:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:41:27,551 INFO L225 Difference]: With dead ends: 117 [2022-07-12 09:41:27,551 INFO L226 Difference]: Without dead ends: 52 [2022-07-12 09:41:27,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:41:27,562 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:41:27,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:41:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-12 09:41:27,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-07-12 09:41:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 09:41:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-07-12 09:41:27,605 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-07-12 09:41:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:41:27,606 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-07-12 09:41:27,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:41:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-07-12 09:41:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:41:27,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:41:27,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:41:27,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 09:41:27,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:41:27,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:41:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:41:27,809 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-12 09:41:27,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:41:27,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017921569] [2022-07-12 09:41:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:41:27,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:41:27,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:41:27,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 09:41:27,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process