./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa --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 af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:02:24,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:02:24,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:02:24,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:02:24,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:02:24,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:02:24,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:02:24,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:02:24,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:02:24,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:02:24,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:02:24,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:02:24,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:02:24,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:02:24,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:02:24,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:02:24,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:02:24,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:02:24,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:02:24,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:02:24,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:02:24,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:02:24,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:02:24,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:02:24,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:02:24,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:02:24,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:02:24,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:02:24,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:02:24,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:02:24,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:02:24,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:02:24,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:02:24,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:02:24,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:02:24,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:02:24,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:02:24,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:02:24,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:02:24,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:02:24,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:02:24,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:02:24,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:02:24,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:02:24,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:02:24,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:02:24,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:02:24,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:02:24,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:02:24,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:02:24,243 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:02:24,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:02:24,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:02:24,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:02:24,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:02:24,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:02:24,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:02:24,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:02:24,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:02:24,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:02:24,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:02:24,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:02:24,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:02:24,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:02:24,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:02:24,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:02:24,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:02:24,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:02:24,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:02:24,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:02:24,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:02:24,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:02:24,246 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:02:24,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:02:24,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:02:24,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:02:24,246 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c [2021-12-06 18:02:24,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:02:24,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:02:24,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:02:24,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:02:24,453 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:02:24,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2021-12-06 18:02:24,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data/c869e12b6/f8de97494bc84ed9841e63d45faf1a5b/FLAG45abb5760 [2021-12-06 18:02:24,915 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:02:24,915 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2021-12-06 18:02:24,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data/c869e12b6/f8de97494bc84ed9841e63d45faf1a5b/FLAG45abb5760 [2021-12-06 18:02:24,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data/c869e12b6/f8de97494bc84ed9841e63d45faf1a5b [2021-12-06 18:02:24,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:02:24,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:02:24,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:02:24,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:02:24,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:02:24,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:02:24" (1/1) ... [2021-12-06 18:02:24,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2318029b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:24, skipping insertion in model container [2021-12-06 18:02:24,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:02:24" (1/1) ... [2021-12-06 18:02:24,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:02:24,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:02:25,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-06 18:02:25,104 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-06 18:02:25,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:02:25,135 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:02:25,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-06 18:02:25,147 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-06 18:02:25,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:02:25,175 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:02:25,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25 WrapperNode [2021-12-06 18:02:25,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:02:25,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:02:25,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:02:25,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:02:25,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,211 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-06 18:02:25,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:02:25,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:02:25,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:02:25,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:02:25,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:02:25,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:02:25,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:02:25,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:02:25,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (1/1) ... [2021-12-06 18:02:25,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:02:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:02:25,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:02:25,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:02:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:02:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-06 18:02:25,293 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-06 18:02:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-06 18:02:25,293 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-06 18:02:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:02:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:02:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:02:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 18:02:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 18:02:25,346 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:02:25,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:02:25,506 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:02:25,514 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:02:25,514 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:02:25,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:02:25 BoogieIcfgContainer [2021-12-06 18:02:25,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:02:25,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:02:25,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:02:25,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:02:25,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:02:24" (1/3) ... [2021-12-06 18:02:25,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165154ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:02:25, skipping insertion in model container [2021-12-06 18:02:25,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:25" (2/3) ... [2021-12-06 18:02:25,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165154ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:02:25, skipping insertion in model container [2021-12-06 18:02:25,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:02:25" (3/3) ... [2021-12-06 18:02:25,524 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_4-2a.c.cil.c [2021-12-06 18:02:25,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:02:25,530 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:02:25,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:02:25,574 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 [2021-12-06 18:02:25,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:02:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:02:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 18:02:25,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:02:25,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:02:25,597 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:02:25,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:02:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-06 18:02:25,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:02:25,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465403138] [2021-12-06 18:02:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:02:25,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:02:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:02:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:02:25,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:02:25,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465403138] [2021-12-06 18:02:25,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465403138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:02:25,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:02:25,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:02:25,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048888325] [2021-12-06 18:02:25,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:02:25,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:02:25,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:02:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:02:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:02:25,770 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:02:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:02:25,798 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-06 18:02:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:02:25,801 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 [2021-12-06 18:02:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:02:25,808 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:02:25,809 INFO L226 Difference]: Without dead ends: 56 [2021-12-06 18:02:25,812 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 [2021-12-06 18:02:25,816 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:02:25,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:02:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-06 18:02:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-06 18:02:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 18:02:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-06 18:02:25,848 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-06 18:02:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:02:25,848 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-06 18:02:25,848 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) [2021-12-06 18:02:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-06 18:02:25,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 18:02:25,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:02:25,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:02:25,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:02:25,849 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:02:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:02:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-06 18:02:25,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:02:25,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128484779] [2021-12-06 18:02:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:02:25,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:02:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:02:25,865 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:02:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:02:25,885 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:02:25,885 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:02:25,887 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 18:02:25,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 18:02:25,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:02:25,891 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 18:02:25,894 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:02:25,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:02:25 BoogieIcfgContainer [2021-12-06 18:02:25,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:02:25,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:02:25,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:02:25,909 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:02:25,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:02:25" (3/4) ... [2021-12-06 18:02:25,911 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:02:25,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:02:25,912 INFO L158 Benchmark]: Toolchain (without parser) took 977.20ms. Allocated memory is still 94.4MB. Free memory was 58.2MB in the beginning and 59.7MB in the end (delta: -1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:02:25,913 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory was 75.0MB in the beginning and 74.9MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:02:25,913 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.59ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 67.8MB in the end (delta: -9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:02:25,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory is still 94.4MB. Free memory was 67.8MB in the beginning and 66.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:02:25,914 INFO L158 Benchmark]: Boogie Preprocessor took 21.15ms. Allocated memory is still 94.4MB. Free memory was 66.1MB in the beginning and 64.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:02:25,914 INFO L158 Benchmark]: RCFGBuilder took 283.09ms. Allocated memory is still 94.4MB. Free memory was 64.6MB in the beginning and 51.4MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 18:02:25,915 INFO L158 Benchmark]: TraceAbstraction took 390.03ms. Allocated memory is still 94.4MB. Free memory was 51.0MB in the beginning and 60.2MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:02:25,915 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 94.4MB. Free memory was 60.2MB in the beginning and 59.7MB in the end (delta: 463.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:02:25,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory was 75.0MB in the beginning and 74.9MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.59ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 67.8MB in the end (delta: -9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.71ms. Allocated memory is still 94.4MB. Free memory was 67.8MB in the beginning and 66.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.15ms. Allocated memory is still 94.4MB. Free memory was 66.1MB in the beginning and 64.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 283.09ms. Allocated memory is still 94.4MB. Free memory was 64.6MB in the beginning and 51.4MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 390.03ms. Allocated memory is still 94.4MB. Free memory was 51.0MB in the beginning and 60.2MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 94.4MB. Free memory was 60.2MB in the beginning and 59.7MB in the end (delta: 463.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 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, 81 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 [2021-12-06 18:02:25,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa --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 af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:02:27,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:02:27,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:02:27,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:02:27,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:02:27,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:02:27,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:02:27,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:02:27,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:02:27,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:02:27,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:02:27,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:02:27,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:02:27,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:02:27,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:02:27,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:02:27,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:02:27,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:02:27,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:02:27,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:02:27,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:02:27,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:02:27,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:02:27,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:02:27,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:02:27,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:02:27,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:02:27,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:02:27,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:02:27,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:02:27,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:02:27,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:02:27,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:02:27,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:02:27,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:02:27,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:02:27,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:02:27,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:02:27,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:02:27,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:02:27,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:02:27,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 18:02:27,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:02:27,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:02:27,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:02:27,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:02:27,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:02:27,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:02:27,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:02:27,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:02:27,591 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:02:27,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:02:27,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:02:27,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:02:27,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:02:27,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:02:27,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:02:27,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:02:27,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:02:27,592 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:02:27,592 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:02:27,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:02:27,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:02:27,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:02:27,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:02:27,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:02:27,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:02:27,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:02:27,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:02:27,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:02:27,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:02:27,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:02:27,594 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:02:27,594 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:02:27,594 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:02:27,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:02:27,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:02:27,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:02:27,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:02:27,595 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c [2021-12-06 18:02:27,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:02:27,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:02:27,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:02:27,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:02:27,851 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:02:27,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2021-12-06 18:02:27,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data/32329c295/af2bb98cbd3a4765b7758913d081411b/FLAGb88e59ee2 [2021-12-06 18:02:28,298 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:02:28,299 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2021-12-06 18:02:28,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data/32329c295/af2bb98cbd3a4765b7758913d081411b/FLAGb88e59ee2 [2021-12-06 18:02:28,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/data/32329c295/af2bb98cbd3a4765b7758913d081411b [2021-12-06 18:02:28,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:02:28,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:02:28,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:02:28,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:02:28,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:02:28,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ad3207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28, skipping insertion in model container [2021-12-06 18:02:28,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:02:28,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:02:28,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-06 18:02:28,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-06 18:02:28,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:02:28,521 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:02:28,536 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-06 18:02:28,537 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-06 18:02:28,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:02:28,578 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:02:28,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28 WrapperNode [2021-12-06 18:02:28,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:02:28,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:02:28,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:02:28,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:02:28,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,615 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-06 18:02:28,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:02:28,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:02:28,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:02:28,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:02:28,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:02:28,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:02:28,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:02:28,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:02:28,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (1/1) ... [2021-12-06 18:02:28,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:02:28,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:02:28,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:02:28,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:02:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:02:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 18:02:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-06 18:02:28,718 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-06 18:02:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-06 18:02:28,718 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-06 18:02:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:02:28,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:02:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 18:02:28,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 18:02:28,782 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:02:28,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:02:31,150 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:02:31,156 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:02:31,156 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:02:31,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:02:31 BoogieIcfgContainer [2021-12-06 18:02:31,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:02:31,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:02:31,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:02:31,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:02:31,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:02:28" (1/3) ... [2021-12-06 18:02:31,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d8b038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:02:31, skipping insertion in model container [2021-12-06 18:02:31,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:02:28" (2/3) ... [2021-12-06 18:02:31,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d8b038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:02:31, skipping insertion in model container [2021-12-06 18:02:31,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:02:31" (3/3) ... [2021-12-06 18:02:31,165 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_4-2a.c.cil.c [2021-12-06 18:02:31,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:02:31,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:02:31,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:02:31,209 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 [2021-12-06 18:02:31,209 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:02:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:02:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 18:02:31,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:02:31,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:02:31,227 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:02:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:02:31,231 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-06 18:02:31,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:02:31,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567722937] [2021-12-06 18:02:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:02:31,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:02:31,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:02:31,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:02:31,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:02:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:02:31,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 18:02:31,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:02:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:02:31,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:02:31,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:02:31,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567722937] [2021-12-06 18:02:31,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567722937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:02:31,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:02:31,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:02:31,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263641172] [2021-12-06 18:02:31,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:02:31,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:02:31,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:02:31,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:02:31,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:02:31,747 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:02:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:02:31,771 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-06 18:02:31,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:02:31,772 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 [2021-12-06 18:02:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:02:31,779 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:02:31,779 INFO L226 Difference]: Without dead ends: 56 [2021-12-06 18:02:31,782 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 [2021-12-06 18:02:31,785 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:02:31,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:02:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-06 18:02:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-06 18:02:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 18:02:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-06 18:02:31,819 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-06 18:02:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:02:31,819 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-06 18:02:31,819 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) [2021-12-06 18:02:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-06 18:02:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 18:02:31,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:02:31,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:02:31,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:02:32,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:02:32,022 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:02:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:02:32,024 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-06 18:02:32,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:02:32,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490146435] [2021-12-06 18:02:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:02:32,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:02:32,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:02:32,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:02:32,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:03:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:03:46,095 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:04:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:04:02,258 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 18:04:02,258 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:04:02,259 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 18:04:02,261 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 18:04:02,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-06 18:04:02,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:04:02,472 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 18:04:02,480 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:04:02,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:04:02 BoogieIcfgContainer [2021-12-06 18:04:02,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:04:02,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:04:02,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:04:02,517 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:04:02,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:02:31" (3/4) ... [2021-12-06 18:04:02,519 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 18:04:02,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:04:02,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:04:02,544 INFO L158 Benchmark]: Toolchain (without parser) took 94219.92ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 36.4MB in the beginning and 43.3MB in the end (delta: -6.9MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-12-06 18:04:02,544 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:04:02,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.76ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 36.3MB in the beginning and 62.6MB in the end (delta: -26.3MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-12-06 18:04:02,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.75ms. Allocated memory is still 83.9MB. Free memory was 62.6MB in the beginning and 60.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:04:02,545 INFO L158 Benchmark]: Boogie Preprocessor took 35.43ms. Allocated memory is still 83.9MB. Free memory was 60.8MB in the beginning and 59.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:04:02,545 INFO L158 Benchmark]: RCFGBuilder took 2505.68ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 46.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 18:04:02,546 INFO L158 Benchmark]: TraceAbstraction took 91355.94ms. Allocated memory is still 83.9MB. Free memory was 45.5MB in the beginning and 45.4MB in the end (delta: 31.6kB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-12-06 18:04:02,546 INFO L158 Benchmark]: Witness Printer took 26.46ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 43.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:04:02,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.76ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 36.3MB in the beginning and 62.6MB in the end (delta: -26.3MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.75ms. Allocated memory is still 83.9MB. Free memory was 62.6MB in the beginning and 60.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.43ms. Allocated memory is still 83.9MB. Free memory was 60.8MB in the beginning and 59.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2505.68ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 46.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 91355.94ms. Allocated memory is still 83.9MB. Free memory was 45.5MB in the beginning and 45.4MB in the end (delta: 31.6kB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Witness Printer took 26.46ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 43.3MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9990200996398926, result=1.3981616497039795, x=0.9990200996398926] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9990200996398926, result=1.3981616497039795, x=0.9990200996398926] [L48] reach_error() VAL [IN=0.9990200996398926, result=1.3981616497039795, x=0.9990200996398926] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 91.3s, 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, 81 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, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 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, 74.4s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2021-12-06 18:04:02,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd76ea5-1469-4334-b30b-d404a3f3c901/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE