./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_3+soft_float_1-2a.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 266a58712a9e3b3c15bc4c8023b36b45db38173e85b035c92eb7b44ae9d55916 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:22:23,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:22:23,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:22:23,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:22:23,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:22:23,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:22:23,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:22:23,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:22:23,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:22:23,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:22:23,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:22:23,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:22:23,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:22:23,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:22:23,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:22:23,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:22:23,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:22:23,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:22:23,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:22:23,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:22:23,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:22:23,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:22:23,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:22:23,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:22:23,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:22:23,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:22:23,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:22:23,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:22:23,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:22:23,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:22:23,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:22:23,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:22:23,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:22:23,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:22:23,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:22:23,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:22:23,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:22:23,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:22:23,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:22:23,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:22:23,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:22:23,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:22:23,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:22:23,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:22:23,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:22:23,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:22:23,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:22:23,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:22:23,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:22:23,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:22:23,981 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:22:23,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:22:23,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:22:23,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:22:23,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:22:23,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:22:23,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:22:23,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:22:23,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:22:23,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:22:23,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:22:23,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:22:23,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:22:23,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:22:23,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:22:23,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:22:23,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:22:23,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:22:23,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:22:23,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:22:23,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:22:23,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:22:23,994 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:22:23,994 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:22:23,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:22:23,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:22:23,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 266a58712a9e3b3c15bc4c8023b36b45db38173e85b035c92eb7b44ae9d55916 [2021-12-14 16:22:24,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:22:24,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:22:24,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:22:24,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:22:24,199 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:22:24,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c [2021-12-14 16:22:24,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9661824d3/b2f0eb94390149ea90becb9ed9ac2222/FLAG136d9ac15 [2021-12-14 16:22:24,643 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:22:24,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c [2021-12-14 16:22:24,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9661824d3/b2f0eb94390149ea90becb9ed9ac2222/FLAG136d9ac15 [2021-12-14 16:22:24,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9661824d3/b2f0eb94390149ea90becb9ed9ac2222 [2021-12-14 16:22:24,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:22:24,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:22:24,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:22:24,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:22:24,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:22:24,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcfb37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24, skipping insertion in model container [2021-12-14 16:22:24,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:22:24,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:22:24,810 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_3+soft_float_1-2a.c.cil.c[1999,2012] [2021-12-14 16:22:24,814 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_3+soft_float_1-2a.c.cil.c[2393,2406] [2021-12-14 16:22:24,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:22:24,858 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:22:24,868 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_3+soft_float_1-2a.c.cil.c[1999,2012] [2021-12-14 16:22:24,869 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_3+soft_float_1-2a.c.cil.c[2393,2406] [2021-12-14 16:22:24,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:22:24,895 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:22:24,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24 WrapperNode [2021-12-14 16:22:24,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:22:24,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:22:24,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:22:24,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:22:24,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,922 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2021-12-14 16:22:24,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:22:24,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:22:24,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:22:24,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:22:24,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:22:24,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:22:24,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:22:24,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:22:24,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (1/1) ... [2021-12-14 16:22:24,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:22:24,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:22:24,998 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) [2021-12-14 16:22:25,014 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 [2021-12-14 16:22:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:22:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-14 16:22:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-14 16:22:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:22:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:22:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:22:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:22:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:22:25,093 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:22:25,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:22:25,271 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:22:25,278 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:22:25,278 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:22:25,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:25 BoogieIcfgContainer [2021-12-14 16:22:25,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:22:25,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:22:25,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:22:25,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:22:25,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:22:24" (1/3) ... [2021-12-14 16:22:25,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395fe7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:22:25, skipping insertion in model container [2021-12-14 16:22:25,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:24" (2/3) ... [2021-12-14 16:22:25,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395fe7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:22:25, skipping insertion in model container [2021-12-14 16:22:25,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:25" (3/3) ... [2021-12-14 16:22:25,286 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_1-2a.c.cil.c [2021-12-14 16:22:25,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:22:25,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:22:25,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:22:25,324 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:22:25,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:22:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 16:22:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:22:25,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:22:25,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:22:25,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:22:25,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:22:25,344 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-14 16:22:25,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:22:25,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489641022] [2021-12-14 16:22:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:22:25,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:22:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:22:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:22:25,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:22:25,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489641022] [2021-12-14 16:22:25,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489641022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:22:25,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:22:25,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:22:25,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363703210] [2021-12-14 16:22:25,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:22:25,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:22:25,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:22:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:22:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:22:25,482 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2021-12-14 16:22:25,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:22:25,524 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-12-14 16:22:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:22:25,526 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 [2021-12-14 16:22:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:22:25,536 INFO L225 Difference]: With dead ends: 157 [2021-12-14 16:22:25,536 INFO L226 Difference]: Without dead ends: 74 [2021-12-14 16:22:25,539 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:22:25,546 INFO L933 BasicCegarLoop]: 116 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, 116 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 [2021-12-14 16:22:25,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:22:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-14 16:22:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-14 16:22:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-14 16:22:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-12-14 16:22:25,593 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-12-14 16:22:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:22:25,594 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-12-14 16:22:25,594 INFO L471 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) [2021-12-14 16:22:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-12-14 16:22:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:22:25,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:22:25,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:22:25,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:22:25,596 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:22:25,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:22:25,599 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-14 16:22:25,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:22:25,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789316241] [2021-12-14 16:22:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:22:25,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:22:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:22:25,631 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 16:22:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:22:25,673 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 16:22:25,681 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 16:22:25,683 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 16:22:25,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 16:22:25,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:22:25,689 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 16:22:25,692 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:22:25,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:22:25 BoogieIcfgContainer [2021-12-14 16:22:25,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:22:25,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:22:25,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:22:25,714 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:22:25,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:25" (3/4) ... [2021-12-14 16:22:25,717 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 16:22:25,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:22:25,718 INFO L158 Benchmark]: Toolchain (without parser) took 1056.89ms. Allocated memory is still 111.1MB. Free memory was 73.8MB in the beginning and 83.3MB in the end (delta: -9.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:22:25,719 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory was 84.5MB in the beginning and 84.4MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:22:25,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.48ms. Allocated memory is still 111.1MB. Free memory was 73.8MB in the beginning and 80.6MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 16:22:25,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.88ms. Allocated memory is still 111.1MB. Free memory was 80.6MB in the beginning and 78.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:22:25,732 INFO L158 Benchmark]: Boogie Preprocessor took 20.12ms. Allocated memory is still 111.1MB. Free memory was 78.5MB in the beginning and 77.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:22:25,732 INFO L158 Benchmark]: RCFGBuilder took 336.04ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 61.5MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-14 16:22:25,733 INFO L158 Benchmark]: TraceAbstraction took 432.43ms. Allocated memory is still 111.1MB. Free memory was 60.9MB in the beginning and 83.7MB in the end (delta: -22.8MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-12-14 16:22:25,733 INFO L158 Benchmark]: Witness Printer took 3.37ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 83.3MB in the end (delta: 327.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:22:25,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory was 84.5MB in the beginning and 84.4MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.48ms. Allocated memory is still 111.1MB. Free memory was 73.8MB in the beginning and 80.6MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.88ms. Allocated memory is still 111.1MB. Free memory was 80.6MB in the beginning and 78.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.12ms. Allocated memory is still 111.1MB. Free memory was 78.5MB in the beginning and 77.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 336.04ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 61.5MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 432.43ms. Allocated memory is still 111.1MB. Free memory was 60.9MB in the beginning and 83.7MB in the end (delta: -22.8MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Witness Printer took 3.37ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 83.3MB in the end (delta: 327.4kB). 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: [L403] COND TRUE __VERIFIER_nondet_int() [L404] 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 < 1.39843f) 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 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 116 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, 116 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=81occurred 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 [2021-12-14 16:22:25,779 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_3+soft_float_1-2a.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 266a58712a9e3b3c15bc4c8023b36b45db38173e85b035c92eb7b44ae9d55916 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:22:27,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:22:27,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:22:27,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:22:27,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:22:27,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:22:27,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:22:27,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:22:27,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:22:27,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:22:27,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:22:27,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:22:27,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:22:27,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:22:27,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:22:27,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:22:27,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:22:27,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:22:27,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:22:27,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:22:27,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:22:27,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:22:27,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:22:27,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:22:27,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:22:27,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:22:27,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:22:27,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:22:27,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:22:27,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:22:27,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:22:27,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:22:27,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:22:27,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:22:27,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:22:27,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:22:27,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:22:27,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:22:27,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:22:27,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:22:27,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:22:27,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 16:22:27,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:22:27,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:22:27,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:22:27,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:22:27,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:22:27,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:22:27,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:22:27,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:22:27,624 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:22:27,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:22:27,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:22:27,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:22:27,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:22:27,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:22:27,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:22:27,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:22:27,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 16:22:27,626 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 16:22:27,626 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 16:22:27,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:22:27,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:22:27,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:22:27,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:22:27,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:22:27,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:22:27,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:22:27,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:22:27,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:22:27,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:22:27,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:22:27,628 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 16:22:27,628 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 16:22:27,628 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:22:27,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:22:27,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:22:27,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:22:27,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 16:22:27,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 266a58712a9e3b3c15bc4c8023b36b45db38173e85b035c92eb7b44ae9d55916 [2021-12-14 16:22:27,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:22:27,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:22:27,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:22:27,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:22:27,937 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:22:27,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c [2021-12-14 16:22:28,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a99e0cd4/fc2dec1f2e634a12b9588b3eefdf9eb4/FLAGa5629a5b3 [2021-12-14 16:22:28,411 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:22:28,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c [2021-12-14 16:22:28,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a99e0cd4/fc2dec1f2e634a12b9588b3eefdf9eb4/FLAGa5629a5b3 [2021-12-14 16:22:28,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a99e0cd4/fc2dec1f2e634a12b9588b3eefdf9eb4 [2021-12-14 16:22:28,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:22:28,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:22:28,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:22:28,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:22:28,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:22:28,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddb94bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28, skipping insertion in model container [2021-12-14 16:22:28,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:22:28,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:22:28,619 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_3+soft_float_1-2a.c.cil.c[1999,2012] [2021-12-14 16:22:28,623 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_3+soft_float_1-2a.c.cil.c[2393,2406] [2021-12-14 16:22:28,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:22:28,692 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:22:28,710 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_3+soft_float_1-2a.c.cil.c[1999,2012] [2021-12-14 16:22:28,713 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_3+soft_float_1-2a.c.cil.c[2393,2406] [2021-12-14 16:22:28,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:22:28,752 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:22:28,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28 WrapperNode [2021-12-14 16:22:28,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:22:28,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:22:28,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:22:28,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:22:28,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,802 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2021-12-14 16:22:28,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:22:28,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:22:28,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:22:28,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:22:28,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:22:28,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:22:28,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:22:28,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:22:28,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (1/1) ... [2021-12-14 16:22:28,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:22:28,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:22:28,905 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) [2021-12-14 16:22:28,908 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 [2021-12-14 16:22:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:22:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 16:22:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-14 16:22:28,938 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-14 16:22:28,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:22:28,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:22:28,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:22:28,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:22:29,038 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:22:29,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:22:31,563 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:22:31,568 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:22:31,568 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:22:31,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:31 BoogieIcfgContainer [2021-12-14 16:22:31,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:22:31,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:22:31,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:22:31,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:22:31,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:22:28" (1/3) ... [2021-12-14 16:22:31,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d387260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:22:31, skipping insertion in model container [2021-12-14 16:22:31,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:28" (2/3) ... [2021-12-14 16:22:31,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d387260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:22:31, skipping insertion in model container [2021-12-14 16:22:31,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:31" (3/3) ... [2021-12-14 16:22:31,575 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_1-2a.c.cil.c [2021-12-14 16:22:31,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:22:31,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:22:31,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:22:31,631 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:22:31,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:22:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 16:22:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:22:31,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:22:31,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:22:31,646 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:22:31,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:22:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-14 16:22:31,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 16:22:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937866099] [2021-12-14 16:22:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:22:31,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 16:22:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 16:22:31,660 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) [2021-12-14 16:22:31,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 16:22:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:22:32,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 16:22:32,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:22:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:22:32,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:22:32,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 16:22:32,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937866099] [2021-12-14 16:22:32,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937866099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:22:32,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:22:32,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:22:32,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461915477] [2021-12-14 16:22:32,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:22:32,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:22:32,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 16:22:32,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:22:32,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:22:32,113 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2021-12-14 16:22:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:22:32,132 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-12-14 16:22:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:22:32,133 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 [2021-12-14 16:22:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:22:32,138 INFO L225 Difference]: With dead ends: 157 [2021-12-14 16:22:32,139 INFO L226 Difference]: Without dead ends: 74 [2021-12-14 16:22:32,141 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:22:32,143 INFO L933 BasicCegarLoop]: 116 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, 116 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 [2021-12-14 16:22:32,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:22:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-14 16:22:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-14 16:22:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-14 16:22:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-12-14 16:22:32,170 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-12-14 16:22:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:22:32,170 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-12-14 16:22:32,170 INFO L471 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) [2021-12-14 16:22:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-12-14 16:22:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:22:32,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:22:32,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:22:32,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 16:22:32,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 16:22:32,386 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:22:32,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:22:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-14 16:22:32,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 16:22:32,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592944573] [2021-12-14 16:22:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:22:32,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 16:22:32,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 16:22:32,389 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) [2021-12-14 16:22:32,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 16:23:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:23:39,791 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.