./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_7+soft_float_4-3a.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_7+soft_float_4-3a.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 317cf552303296ead23517bc3cb76b321aca03eab157d3f1e74014baa7d95db0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:25:35,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:25:35,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:25:35,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:25:35,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:25:35,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:25:35,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:25:35,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:25:35,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:25:35,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:25:35,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:25:35,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:25:35,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:25:35,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:25:35,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:25:35,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:25:35,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:25:35,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:25:35,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:25:35,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:25:35,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:25:35,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:25:35,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:25:35,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:25:35,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:25:35,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:25:35,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:25:35,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:25:35,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:25:35,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:25:35,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:25:35,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:25:35,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:25:35,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:25:35,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:25:35,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:25:35,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:25:35,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:25:35,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:25:35,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:25:35,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:25:35,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:25:35,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:25:35,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:25:35,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:25:35,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:25:35,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:25:35,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:25:35,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:25:35,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:25:35,247 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:25:35,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:25:35,248 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:25:35,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:25:35,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:25:35,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:25:35,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:25:35,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:25:35,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:25:35,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:25:35,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:25:35,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:25:35,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:25:35,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:25:35,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:25:35,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:25:35,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:25:35,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:25:35,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:25:35,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:25:35,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:25:35,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:25:35,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:25:35,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:25:35,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:25:35,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:25:35,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317cf552303296ead23517bc3cb76b321aca03eab157d3f1e74014baa7d95db0 [2021-12-14 16:25:35,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:25:35,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:25:35,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:25:35,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:25:35,431 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:25:35,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_4-3a.c.cil.c [2021-12-14 16:25:35,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62021f5e/4a8dba953c35476d95487f7e2f60eacd/FLAG2a1abe2ef [2021-12-14 16:25:35,891 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:25:35,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_4-3a.c.cil.c [2021-12-14 16:25:35,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62021f5e/4a8dba953c35476d95487f7e2f60eacd/FLAG2a1abe2ef [2021-12-14 16:25:35,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62021f5e/4a8dba953c35476d95487f7e2f60eacd [2021-12-14 16:25:35,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:25:35,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:25:35,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:25:35,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:25:35,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:25:35,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:25:35" (1/1) ... [2021-12-14 16:25:35,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b901d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:35, skipping insertion in model container [2021-12-14 16:25:35,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:25:35" (1/1) ... [2021-12-14 16:25:35,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:25:35,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:25:36,126 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_7+soft_float_4-3a.c.cil.c[1995,2008] [2021-12-14 16:25:36,129 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_7+soft_float_4-3a.c.cil.c[2364,2377] [2021-12-14 16:25:36,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:25:36,156 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:25:36,173 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_7+soft_float_4-3a.c.cil.c[1995,2008] [2021-12-14 16:25:36,174 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_7+soft_float_4-3a.c.cil.c[2364,2377] [2021-12-14 16:25:36,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:25:36,203 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:25:36,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36 WrapperNode [2021-12-14 16:25:36,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:25:36,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:25:36,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:25:36,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:25:36,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,246 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-14 16:25:36,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:25:36,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:25:36,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:25:36,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:25:36,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:25:36,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:25:36,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:25:36,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:25:36,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (1/1) ... [2021-12-14 16:25:36,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:25:36,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:25:36,357 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 16:25:36,375 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 16:25:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:25:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-14 16:25:36,386 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-14 16:25:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-14 16:25:36,386 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-14 16:25:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:25:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:25:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:25:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:25:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:25:36,432 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:25:36,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:25:36,621 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:25:36,626 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:25:36,626 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:25:36,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:25:36 BoogieIcfgContainer [2021-12-14 16:25:36,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:25:36,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:25:36,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:25:36,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:25:36,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:25:35" (1/3) ... [2021-12-14 16:25:36,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd09088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:25:36, skipping insertion in model container [2021-12-14 16:25:36,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:36" (2/3) ... [2021-12-14 16:25:36,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd09088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:25:36, skipping insertion in model container [2021-12-14 16:25:36,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:25:36" (3/3) ... [2021-12-14 16:25:36,633 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_4-3a.c.cil.c [2021-12-14 16:25:36,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:25:36,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:25:36,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:25:36,683 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 16:25:36,684 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:25:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-14 16:25:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:25:36,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:25:36,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:25:36,699 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:25:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:25:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-14 16:25:36,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:25:36,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054099510] [2021-12-14 16:25:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:25:36,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:25:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:25:36,795 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 16:25:36,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:25:36,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054099510] [2021-12-14 16:25:36,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054099510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:25:36,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:25:36,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:25:36,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736770152] [2021-12-14 16:25:36,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:25:36,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:25:36,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:25:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:25:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:25:36,821 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 16:25:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:25:36,839 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2021-12-14 16:25:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:25:36,840 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 16:25:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:25:36,846 INFO L225 Difference]: With dead ends: 121 [2021-12-14 16:25:36,846 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 16:25:36,849 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 16:25:36,851 INFO L933 BasicCegarLoop]: 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 [2021-12-14 16:25:36,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:25:36,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 16:25:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 16:25:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 16:25:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2021-12-14 16:25:36,877 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2021-12-14 16:25:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:25:36,877 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2021-12-14 16:25:36,878 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 16:25:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2021-12-14 16:25:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:25:36,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:25:36,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:25:36,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:25:36,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:25:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:25:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-14 16:25:36,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:25:36,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322710129] [2021-12-14 16:25:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:25:36,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:25:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:25:36,892 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 16:25:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:25:36,909 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 16:25:36,909 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 16:25:36,910 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 16:25:36,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 16:25:36,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:25:36,913 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 16:25:36,915 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:25:36,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:25:36 BoogieIcfgContainer [2021-12-14 16:25:36,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:25:36,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:25:36,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:25:36,935 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:25:36,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:25:36" (3/4) ... [2021-12-14 16:25:36,937 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 16:25:36,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:25:36,938 INFO L158 Benchmark]: Toolchain (without parser) took 1015.00ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 67.7MB in the beginning and 65.5MB in the end (delta: 2.2MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2021-12-14 16:25:36,939 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 56.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:25:36,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.51ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 67.4MB in the beginning and 106.8MB in the end (delta: -39.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-12-14 16:25:36,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.85ms. Allocated memory is still 134.2MB. Free memory was 106.8MB in the beginning and 105.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:25:36,943 INFO L158 Benchmark]: Boogie Preprocessor took 18.89ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 104.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:25:36,944 INFO L158 Benchmark]: RCFGBuilder took 360.31ms. Allocated memory is still 134.2MB. Free memory was 104.0MB in the beginning and 90.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-14 16:25:36,944 INFO L158 Benchmark]: TraceAbstraction took 304.49ms. Allocated memory is still 134.2MB. Free memory was 90.1MB in the beginning and 66.2MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-14 16:25:36,944 INFO L158 Benchmark]: Witness Printer took 2.91ms. Allocated memory is still 134.2MB. Free memory was 66.2MB in the beginning and 65.5MB in the end (delta: 628.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:25:36,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 56.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.51ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 67.4MB in the beginning and 106.8MB in the end (delta: -39.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.85ms. Allocated memory is still 134.2MB. Free memory was 106.8MB in the beginning and 105.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.89ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 104.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 360.31ms. Allocated memory is still 134.2MB. Free memory was 104.0MB in the beginning and 90.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 304.49ms. Allocated memory is still 134.2MB. Free memory was 90.1MB in the beginning and 66.2MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.91ms. Allocated memory is still 134.2MB. Free memory was 66.2MB in the beginning and 65.5MB in the end (delta: 628.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L309] COND TRUE __VERIFIER_nondet_int() [L310] 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 < 1.4f) 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 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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, 82 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, 82 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=63occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 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 16:25:36,993 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_7+soft_float_4-3a.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 317cf552303296ead23517bc3cb76b321aca03eab157d3f1e74014baa7d95db0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:25:38,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:25:38,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:25:38,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:25:38,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:25:38,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:25:38,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:25:38,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:25:38,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:25:38,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:25:38,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:25:38,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:25:38,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:25:38,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:25:38,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:25:38,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:25:38,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:25:38,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:25:38,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:25:38,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:25:38,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:25:38,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:25:38,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:25:38,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:25:38,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:25:38,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:25:38,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:25:38,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:25:38,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:25:38,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:25:38,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:25:38,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:25:38,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:25:38,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:25:38,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:25:38,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:25:38,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:25:38,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:25:38,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:25:38,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:25:38,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:25:38,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 16:25:38,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:25:38,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:25:38,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:25:38,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:25:38,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:25:38,743 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:25:38,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:25:38,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:25:38,744 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:25:38,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:25:38,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:25:38,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:25:38,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:25:38,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:25:38,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:25:38,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:25:38,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 16:25:38,746 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 16:25:38,746 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 16:25:38,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:25:38,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:25:38,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:25:38,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:25:38,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:25:38,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:25:38,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:25:38,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:25:38,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:25:38,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:25:38,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:25:38,748 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 16:25:38,748 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 16:25:38,748 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:25:38,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:25:38,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:25:38,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:25:38,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 16:25:38,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317cf552303296ead23517bc3cb76b321aca03eab157d3f1e74014baa7d95db0 [2021-12-14 16:25:39,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:25:39,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:25:39,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:25:39,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:25:39,067 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:25:39,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_4-3a.c.cil.c [2021-12-14 16:25:39,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b93247a/ccb8db3e296d48a8a1780872e8ce2cf4/FLAG074ccf660 [2021-12-14 16:25:39,464 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:25:39,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_4-3a.c.cil.c [2021-12-14 16:25:39,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b93247a/ccb8db3e296d48a8a1780872e8ce2cf4/FLAG074ccf660 [2021-12-14 16:25:39,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b93247a/ccb8db3e296d48a8a1780872e8ce2cf4 [2021-12-14 16:25:39,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:25:39,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:25:39,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:25:39,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:25:39,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:25:39,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:25:39" (1/1) ... [2021-12-14 16:25:39,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5325b857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:39, skipping insertion in model container [2021-12-14 16:25:39,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:25:39" (1/1) ... [2021-12-14 16:25:39,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:25:39,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:25:40,056 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_7+soft_float_4-3a.c.cil.c[1995,2008] [2021-12-14 16:25:40,066 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_7+soft_float_4-3a.c.cil.c[2364,2377] [2021-12-14 16:25:40,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:25:40,092 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:25:40,102 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_7+soft_float_4-3a.c.cil.c[1995,2008] [2021-12-14 16:25:40,103 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_7+soft_float_4-3a.c.cil.c[2364,2377] [2021-12-14 16:25:40,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:25:40,126 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:25:40,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40 WrapperNode [2021-12-14 16:25:40,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:25:40,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:25:40,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:25:40,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:25:40,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,159 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-14 16:25:40,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:25:40,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:25:40,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:25:40,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:25:40,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:25:40,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:25:40,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:25:40,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:25:40,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (1/1) ... [2021-12-14 16:25:40,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:25:40,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:25:40,265 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 16:25:40,284 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 16:25:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:25:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 16:25:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-14 16:25:40,294 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-14 16:25:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-14 16:25:40,294 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-14 16:25:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:25:40,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:25:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:25:40,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:25:40,361 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:25:40,363 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:25:42,789 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:25:42,803 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:25:42,804 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:25:42,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:25:42 BoogieIcfgContainer [2021-12-14 16:25:42,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:25:42,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:25:42,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:25:42,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:25:42,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:25:39" (1/3) ... [2021-12-14 16:25:42,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4355dbb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:25:42, skipping insertion in model container [2021-12-14 16:25:42,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:25:40" (2/3) ... [2021-12-14 16:25:42,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4355dbb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:25:42, skipping insertion in model container [2021-12-14 16:25:42,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:25:42" (3/3) ... [2021-12-14 16:25:42,811 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_4-3a.c.cil.c [2021-12-14 16:25:42,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:25:42,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:25:42,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:25:42,856 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 16:25:42,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:25:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-14 16:25:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:25:42,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:25:42,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:25:42,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:25:42,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:25:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-14 16:25:42,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 16:25:42,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845788286] [2021-12-14 16:25:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:25:42,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 16:25:42,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 16:25:42,883 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 16:25:42,884 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 16:25:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:25:43,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 16:25:43,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:25:43,301 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 16:25:43,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:25:43,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 16:25:43,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845788286] [2021-12-14 16:25:43,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845788286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:25:43,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:25:43,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:25:43,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962936400] [2021-12-14 16:25:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:25:43,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:25:43,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 16:25:43,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:25:43,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:25:43,331 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 16:25:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:25:43,366 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2021-12-14 16:25:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:25:43,367 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 16:25:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:25:43,372 INFO L225 Difference]: With dead ends: 121 [2021-12-14 16:25:43,373 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 16:25:43,375 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 16:25:43,378 INFO L933 BasicCegarLoop]: 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 [2021-12-14 16:25:43,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:25:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 16:25:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 16:25:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 16:25:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2021-12-14 16:25:43,417 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2021-12-14 16:25:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:25:43,417 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2021-12-14 16:25:43,418 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 16:25:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2021-12-14 16:25:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:25:43,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:25:43,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:25:43,442 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 16:25:43,642 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 16:25:43,644 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:25:43,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:25:43,646 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-14 16:25:43,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 16:25:43,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050941810] [2021-12-14 16:25:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:25:43,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 16:25:43,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 16:25:43,650 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 16:25:43,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process