./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF --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 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:37:45,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:37:45,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:37:45,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:37:45,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:37:45,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:37:45,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:37:45,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:37:45,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:37:45,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:37:45,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:37:45,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:37:45,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:37:45,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:37:45,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:37:45,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:37:45,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:37:45,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:37:45,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:37:45,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:37:45,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:37:45,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:37:45,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:37:45,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:37:45,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:37:45,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:37:45,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:37:45,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:37:45,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:37:45,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:37:45,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:37:45,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:37:45,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:37:45,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:37:45,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:37:45,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:37:45,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:37:45,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:37:45,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:37:45,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:37:45,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:37:45,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:37:46,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:37:46,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:37:46,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:37:46,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:37:46,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:37:46,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:37:46,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:37:46,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:37:46,045 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:37:46,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:37:46,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:37:46,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:37:46,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:37:46,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:37:46,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:37:46,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:37:46,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:37:46,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:37:46,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:37:46,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:37:46,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:37:46,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:37:46,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:37:46,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:37:46,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:37:46,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:37:46,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:37:46,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:37:46,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:37:46,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:37:46,052 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:37:46,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:37:46,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:37:46,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:37:46,053 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_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc [2021-11-20 05:37:46,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:37:46,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:37:46,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:37:46,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:37:46,373 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:37:46,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2021-11-20 05:37:46,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data/5e8a02b90/06f768fbc7e84abebccd37b97981c7c8/FLAGaf9dcce2b [2021-11-20 05:37:47,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:37:47,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2021-11-20 05:37:47,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data/5e8a02b90/06f768fbc7e84abebccd37b97981c7c8/FLAGaf9dcce2b [2021-11-20 05:37:47,475 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data/5e8a02b90/06f768fbc7e84abebccd37b97981c7c8 [2021-11-20 05:37:47,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:37:47,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:37:47,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:37:47,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:37:47,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:37:47,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:37:47" (1/1) ... [2021-11-20 05:37:47,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e0e053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:47, skipping insertion in model container [2021-11-20 05:37:47,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:37:47" (1/1) ... [2021-11-20 05:37:47,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:37:47,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:37:47,901 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_c25d4a10-d9a8-4413-8726-45d1ccc092a1/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2021-11-20 05:37:47,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:37:47,927 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:37:48,013 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_c25d4a10-d9a8-4413-8726-45d1ccc092a1/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2021-11-20 05:37:48,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:37:48,044 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:37:48,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48 WrapperNode [2021-11-20 05:37:48,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:37:48,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:37:48,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:37:48,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:37:48,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,129 INFO L137 Inliner]: procedures = 18, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 148 [2021-11-20 05:37:48,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:37:48,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:37:48,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:37:48,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:37:48,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:37:48,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:37:48,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:37:48,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:37:48,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2021-11-20 05:37:48,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:37:48,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:37:48,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:37:48,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:37:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:37:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:37:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:37:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-20 05:37:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:37:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 05:37:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:37:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:37:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:37:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:37:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-11-20 05:37:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-11-20 05:37:48,491 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:37:48,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:37:48,889 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:37:48,897 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:37:48,897 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-20 05:37:48,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:37:48 BoogieIcfgContainer [2021-11-20 05:37:48,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:37:48,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:37:48,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:37:48,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:37:48,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:37:47" (1/3) ... [2021-11-20 05:37:48,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79503035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:37:48, skipping insertion in model container [2021-11-20 05:37:48,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (2/3) ... [2021-11-20 05:37:48,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79503035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:37:48, skipping insertion in model container [2021-11-20 05:37:48,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:37:48" (3/3) ... [2021-11-20 05:37:48,910 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2021-11-20 05:37:48,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:37:48,917 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:37:48,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:37:48,995 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 [2021-11-20 05:37:48,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:37:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 54 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:37:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 05:37:49,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:37:49,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:37:49,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:37:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1029505661, now seen corresponding path program 1 times [2021-11-20 05:37:49,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:49,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241572817] [2021-11-20 05:37:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:49,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:37:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:37:49,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:37:49,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241572817] [2021-11-20 05:37:49,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241572817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:37:49,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:37:49,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:37:49,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605164798] [2021-11-20 05:37:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:37:49,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:37:49,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:37:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:37:49,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:37:49,334 INFO L87 Difference]: Start difference. First operand has 58 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 54 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-20 05:37:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:37:49,382 INFO L93 Difference]: Finished difference Result 114 states and 182 transitions. [2021-11-20 05:37:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:37:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-20 05:37:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:37:49,397 INFO L225 Difference]: With dead ends: 114 [2021-11-20 05:37:49,398 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 05:37:49,403 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 [2021-11-20 05:37:49,409 INFO L933 BasicCegarLoop]: 76 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, 76 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 [2021-11-20 05:37:49,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:37:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 05:37:49,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-20 05:37:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:37:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2021-11-20 05:37:49,470 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 73 transitions. Word has length 10 [2021-11-20 05:37:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:37:49,470 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 73 transitions. [2021-11-20 05:37:49,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-20 05:37:49,470 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 73 transitions. [2021-11-20 05:37:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:37:49,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:37:49,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:37:49,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:37:49,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:37:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:37:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1305801536, now seen corresponding path program 1 times [2021-11-20 05:37:49,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:37:49,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837878561] [2021-11-20 05:37:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:37:49,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:37:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:37:49,524 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:37:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:37:49,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:37:49,631 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:37:49,635 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:37:49,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:37:49,642 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 05:37:49,646 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:37:49,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:37:49 BoogieIcfgContainer [2021-11-20 05:37:49,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:37:49,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:37:49,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:37:49,714 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:37:49,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:37:48" (3/4) ... [2021-11-20 05:37:49,718 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:37:49,719 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:37:49,720 INFO L158 Benchmark]: Toolchain (without parser) took 2238.26ms. Allocated memory is still 132.1MB. Free memory was 103.1MB in the beginning and 56.8MB in the end (delta: 46.3MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2021-11-20 05:37:49,721 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 48.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:37:49,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.22ms. Allocated memory is still 132.1MB. Free memory was 103.1MB in the beginning and 104.5MB in the end (delta: -1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:37:49,726 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.26ms. Allocated memory is still 132.1MB. Free memory was 104.5MB in the beginning and 102.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:37:49,727 INFO L158 Benchmark]: Boogie Preprocessor took 83.80ms. Allocated memory is still 132.1MB. Free memory was 102.3MB in the beginning and 100.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:37:49,730 INFO L158 Benchmark]: RCFGBuilder took 683.91ms. Allocated memory is still 132.1MB. Free memory was 100.3MB in the beginning and 84.5MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-20 05:37:49,731 INFO L158 Benchmark]: TraceAbstraction took 810.77ms. Allocated memory is still 132.1MB. Free memory was 84.0MB in the beginning and 57.3MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-20 05:37:49,732 INFO L158 Benchmark]: Witness Printer took 5.33ms. Allocated memory is still 132.1MB. Free memory was 57.3MB in the beginning and 56.8MB in the end (delta: 494.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:37:49,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 48.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.22ms. Allocated memory is still 132.1MB. Free memory was 103.1MB in the beginning and 104.5MB in the end (delta: -1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.26ms. Allocated memory is still 132.1MB. Free memory was 104.5MB in the beginning and 102.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.80ms. Allocated memory is still 132.1MB. Free memory was 102.3MB in the beginning and 100.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 683.91ms. Allocated memory is still 132.1MB. Free memory was 100.3MB in the beginning and 84.5MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 810.77ms. Allocated memory is still 132.1MB. Free memory was 84.0MB in the beginning and 57.3MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 5.33ms. Allocated memory is still 132.1MB. Free memory was 57.3MB in the beginning and 56.8MB in the end (delta: 494.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 184]: 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 183, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L83-L90] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; VAL [one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L179] float x = 1.0f; [L180] CALL, EXPR __ieee754_acosf(x) [L93] float z, p, q, r, w, s, c, df; [L94] __int32_t hx, ix; VAL [\old(x)=1, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L96] ieee_float_shape_type gf_u; [L97] gf_u.value = (x) [L98] EXPR gf_u.word [L98] (hx) = gf_u.word [L100] ix = hx & 0x7fffffff VAL [\old(x)=1, hx=6, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L101] COND TRUE ix == 0x3f800000 VAL [\old(x)=1, hx=6, ix=1065353216, one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L102] COND TRUE hx > 0 [L103] return 0.0; VAL [\old(x)=1, \result=0, hx=6, ix=1065353216, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L180] RET, EXPR __ieee754_acosf(x) [L180] float res = __ieee754_acosf(x); [L183] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, res == 0.0f && __signbit_float(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L183] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L184] reach_error() VAL [one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 76 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, 76 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=58occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2021-11-20 05:37:49,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/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_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF --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 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:37:52,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:37:52,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:37:52,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:37:52,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:37:52,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:37:52,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:37:52,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:37:52,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:37:52,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:37:52,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:37:52,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:37:52,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:37:52,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:37:52,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:37:52,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:37:52,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:37:52,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:37:52,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:37:52,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:37:52,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:37:52,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:37:52,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:37:52,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:37:52,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:37:52,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:37:52,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:37:52,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:37:52,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:37:52,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:37:52,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:37:52,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:37:52,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:37:52,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:37:52,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:37:52,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:37:52,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:37:52,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:37:52,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:37:52,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:37:52,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:37:52,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 05:37:52,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:37:52,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:37:52,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:37:52,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:37:52,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:37:52,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:37:52,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:37:52,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:37:52,575 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:37:52,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:37:52,575 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:37:52,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:37:52,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:37:52,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:37:52,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:37:52,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:37:52,576 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:37:52,576 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:37:52,576 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:37:52,576 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:37:52,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:37:52,577 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:37:52,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:37:52,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:37:52,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:37:52,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:37:52,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:37:52,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:37:52,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:37:52,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:37:52,578 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:37:52,578 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:37:52,578 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:37:52,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:37:52,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:37:52,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:37:52,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:37:52,579 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_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc [2021-11-20 05:37:53,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:37:53,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:37:53,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:37:53,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:37:53,047 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:37:53,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2021-11-20 05:37:53,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data/96bfc866a/743b302716f145968c6082f6ce91f0ba/FLAGdfad77cd3 [2021-11-20 05:37:53,728 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:37:53,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2021-11-20 05:37:53,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data/96bfc866a/743b302716f145968c6082f6ce91f0ba/FLAGdfad77cd3 [2021-11-20 05:37:54,044 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/data/96bfc866a/743b302716f145968c6082f6ce91f0ba [2021-11-20 05:37:54,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:37:54,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:37:54,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:37:54,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:37:54,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:37:54,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6899d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54, skipping insertion in model container [2021-11-20 05:37:54,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:37:54,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:37:54,346 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_c25d4a10-d9a8-4413-8726-45d1ccc092a1/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2021-11-20 05:37:54,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:37:54,364 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:37:54,466 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_c25d4a10-d9a8-4413-8726-45d1ccc092a1/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2021-11-20 05:37:54,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:37:54,491 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:37:54,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54 WrapperNode [2021-11-20 05:37:54,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:37:54,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:37:54,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:37:54,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:37:54,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,543 INFO L137 Inliner]: procedures = 21, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 148 [2021-11-20 05:37:54,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:37:54,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:37:54,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:37:54,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:37:54,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:37:54,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:37:54,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:37:54,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:37:54,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (1/1) ... [2021-11-20 05:37:54,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:37:54,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:37:54,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:37:54,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:37:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:37:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:37:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:37:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-20 05:37:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:37:54,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:37:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:37:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-20 05:37:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:37:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:37:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-11-20 05:37:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-11-20 05:37:54,802 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:37:54,818 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:38:04,860 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:38:04,868 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:38:04,869 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-20 05:38:04,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:38:04 BoogieIcfgContainer [2021-11-20 05:38:04,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:38:04,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:38:04,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:38:04,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:38:04,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:37:54" (1/3) ... [2021-11-20 05:38:04,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3804d3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:38:04, skipping insertion in model container [2021-11-20 05:38:04,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:54" (2/3) ... [2021-11-20 05:38:04,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3804d3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:38:04, skipping insertion in model container [2021-11-20 05:38:04,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:38:04" (3/3) ... [2021-11-20 05:38:04,902 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2021-11-20 05:38:04,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:38:04,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:38:04,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:38:04,974 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 [2021-11-20 05:38:04,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:38:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 54 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:38:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 05:38:05,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:05,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:05,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:05,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1029505661, now seen corresponding path program 1 times [2021-11-20 05:38:05,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:05,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581551752] [2021-11-20 05:38:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:05,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:05,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:05,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:05,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:38:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:05,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 05:38:05,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:05,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:05,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:05,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581551752] [2021-11-20 05:38:05,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581551752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:05,846 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:05,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:38:05,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902856509] [2021-11-20 05:38:05,849 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:05,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:38:05,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:38:05,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:38:05,884 INFO L87 Difference]: Start difference. First operand has 58 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 54 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-20 05:38:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:05,910 INFO L93 Difference]: Finished difference Result 114 states and 182 transitions. [2021-11-20 05:38:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:38:05,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-20 05:38:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:05,920 INFO L225 Difference]: With dead ends: 114 [2021-11-20 05:38:05,921 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 05:38:05,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:38:05,928 INFO L933 BasicCegarLoop]: 76 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, 76 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 [2021-11-20 05:38:05,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:38:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 05:38:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-20 05:38:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:38:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2021-11-20 05:38:05,970 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 73 transitions. Word has length 10 [2021-11-20 05:38:05,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:05,971 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 73 transitions. [2021-11-20 05:38:05,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-20 05:38:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 73 transitions. [2021-11-20 05:38:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:38:05,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:05,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:05,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:06,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:06,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:06,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1305801536, now seen corresponding path program 1 times [2021-11-20 05:38:06,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:06,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297529253] [2021-11-20 05:38:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:06,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:06,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:06,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:06,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:38:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:06,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:38:06,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:07,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:07,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:07,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297529253] [2021-11-20 05:38:07,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297529253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:07,305 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:07,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 05:38:07,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296244178] [2021-11-20 05:38:07,306 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:07,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:38:07,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:38:07,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:38:07,309 INFO L87 Difference]: Start difference. First operand 55 states and 73 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-20 05:38:10,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:38:13,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:38:15,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:38:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:15,662 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2021-11-20 05:38:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:38:15,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 11 [2021-11-20 05:38:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:15,863 INFO L225 Difference]: With dead ends: 60 [2021-11-20 05:38:15,863 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 05:38:15,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:38:15,865 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:15,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 261 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 3 Unknown, 9 Unchecked, 8.3s Time] [2021-11-20 05:38:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 05:38:15,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 05:38:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:38:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2021-11-20 05:38:15,881 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 11 [2021-11-20 05:38:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:15,882 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2021-11-20 05:38:15,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-20 05:38:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2021-11-20 05:38:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:38:15,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:15,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:15,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:16,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:16,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:16,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:16,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1303954494, now seen corresponding path program 1 times [2021-11-20 05:38:16,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:16,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265559991] [2021-11-20 05:38:16,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:16,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:16,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:16,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:16,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:38:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:16,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:38:16,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:17,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:17,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:17,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265559991] [2021-11-20 05:38:17,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265559991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:17,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:17,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:38:17,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93480310] [2021-11-20 05:38:17,400 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:17,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:38:17,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:38:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:38:17,402 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-20 05:38:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:17,415 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2021-11-20 05:38:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:38:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 11 [2021-11-20 05:38:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:17,417 INFO L225 Difference]: With dead ends: 75 [2021-11-20 05:38:17,418 INFO L226 Difference]: Without dead ends: 66 [2021-11-20 05:38:17,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:38:17,420 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 16 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:17,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 327 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2021-11-20 05:38:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-20 05:38:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2021-11-20 05:38:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:38:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2021-11-20 05:38:17,430 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 11 [2021-11-20 05:38:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:17,431 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2021-11-20 05:38:17,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-20 05:38:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2021-11-20 05:38:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:38:17,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:17,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:17,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:17,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:17,646 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1098932832, now seen corresponding path program 1 times [2021-11-20 05:38:17,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:17,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489506816] [2021-11-20 05:38:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:17,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:17,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:17,655 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:17,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:38:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:18,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:38:18,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:18,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:19,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:19,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489506816] [2021-11-20 05:38:19,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489506816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:19,377 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:19,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 05:38:19,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740776430] [2021-11-20 05:38:19,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:19,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:38:19,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:19,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:38:19,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:38:19,379 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-20 05:38:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:19,468 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2021-11-20 05:38:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:38:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 11 [2021-11-20 05:38:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:19,470 INFO L225 Difference]: With dead ends: 64 [2021-11-20 05:38:19,470 INFO L226 Difference]: Without dead ends: 16 [2021-11-20 05:38:19,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:38:19,472 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:19,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2021-11-20 05:38:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-20 05:38:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-20 05:38:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 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) [2021-11-20 05:38:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-11-20 05:38:19,477 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2021-11-20 05:38:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:19,478 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-11-20 05:38:19,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-20 05:38:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-11-20 05:38:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:38:19,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:19,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:38:19,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:38:19,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:19,702 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:38:19,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:19,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1217406699, now seen corresponding path program 1 times [2021-11-20 05:38:19,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:19,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857740334] [2021-11-20 05:38:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:19,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:19,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:19,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:19,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:38:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:20,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:38:20,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:21,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:22,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:22,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857740334] [2021-11-20 05:38:22,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857740334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:22,633 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:22,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-20 05:38:22,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733476594] [2021-11-20 05:38:22,634 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:22,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:38:22,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:22,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:38:22,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:38:22,636 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-11-20 05:38:22,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:22,849 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-11-20 05:38:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:38:22,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 15 [2021-11-20 05:38:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:22,850 INFO L225 Difference]: With dead ends: 16 [2021-11-20 05:38:22,850 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 05:38:22,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:38:22,856 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:22,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2021-11-20 05:38:22,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 05:38:22,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 05:38:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-20 05:38:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 05:38:22,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-20 05:38:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:22,859 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 05:38:22,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-11-20 05:38:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 05:38:22,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 05:38:22,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:38:22,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-20 05:38:23,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:23,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 05:38:23,365 INFO L861 garLoopResultBuilder]: At program point L188(lines 173 189) the Hoare annotation is: true [2021-11-20 05:38:23,365 INFO L858 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2021-11-20 05:38:23,365 INFO L858 garLoopResultBuilder]: For program point L143(lines 143 147) no Hoare annotation was computed. [2021-11-20 05:38:23,365 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 111) no Hoare annotation was computed. [2021-11-20 05:38:23,365 INFO L858 garLoopResultBuilder]: For program point L143-1(lines 133 158) no Hoare annotation was computed. [2021-11-20 05:38:23,365 INFO L858 garLoopResultBuilder]: For program point L143-2(lines 143 147) no Hoare annotation was computed. [2021-11-20 05:38:23,365 INFO L858 garLoopResultBuilder]: For program point L106(lines 106 108) no Hoare annotation was computed. [2021-11-20 05:38:23,365 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 105) no Hoare annotation was computed. [2021-11-20 05:38:23,366 INFO L858 garLoopResultBuilder]: For program point L164-1(lines 164 168) no Hoare annotation was computed. [2021-11-20 05:38:23,366 INFO L854 garLoopResultBuilder]: At program point L164-2(lines 164 168) the Hoare annotation is: (and (= (_ bv1065353216 32) |ULTIMATE.start___ieee754_acosf_~ix~1#1|) |ULTIMATE.start_main_#t~short15#1| (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) |ULTIMATE.start___signbit_float_~x#1|))) [2021-11-20 05:38:23,366 INFO L858 garLoopResultBuilder]: For program point L164-3(lines 164 168) no Hoare annotation was computed. [2021-11-20 05:38:23,366 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 05:38:23,366 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 05:38:23,366 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 05:38:23,366 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 184) no Hoare annotation was computed. [2021-11-20 05:38:23,367 INFO L854 garLoopResultBuilder]: At program point L136(line 136) the Hoare annotation is: false [2021-11-20 05:38:23,367 INFO L858 garLoopResultBuilder]: For program point L136-1(line 136) no Hoare annotation was computed. [2021-11-20 05:38:23,367 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 05:38:23,367 INFO L858 garLoopResultBuilder]: For program point L95-1(lines 95 99) no Hoare annotation was computed. [2021-11-20 05:38:23,367 INFO L854 garLoopResultBuilder]: At program point L95-2(lines 95 99) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_acosf_~x#1| ((_ to_fp 8 24) currentRoundingMode 1.0))) [2021-11-20 05:38:23,368 INFO L854 garLoopResultBuilder]: At program point L157(lines 92 159) the Hoare annotation is: (and (= (_ bv1065353216 32) |ULTIMATE.start___ieee754_acosf_~ix~1#1|) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) |ULTIMATE.start___ieee754_acosf_#res#1|))) [2021-11-20 05:38:23,368 INFO L858 garLoopResultBuilder]: For program point L95-3(lines 95 99) no Hoare annotation was computed. [2021-11-20 05:38:23,368 INFO L854 garLoopResultBuilder]: At program point L170(lines 161 171) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32)) (= (_ bv1065353216 32) |ULTIMATE.start___ieee754_acosf_~ix~1#1|) |ULTIMATE.start_main_#t~short15#1|) [2021-11-20 05:38:23,368 INFO L854 garLoopResultBuilder]: At program point L129(line 129) the Hoare annotation is: false [2021-11-20 05:38:23,369 INFO L858 garLoopResultBuilder]: For program point L129-1(line 129) no Hoare annotation was computed. [2021-11-20 05:38:23,369 INFO L858 garLoopResultBuilder]: For program point L121(lines 121 158) no Hoare annotation was computed. [2021-11-20 05:38:23,369 INFO L858 garLoopResultBuilder]: For program point L183(line 183) no Hoare annotation was computed. [2021-11-20 05:38:23,369 INFO L858 garLoopResultBuilder]: For program point L183-2(lines 183 186) no Hoare annotation was computed. [2021-11-20 05:38:23,370 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 158) no Hoare annotation was computed. [2021-11-20 05:38:23,370 INFO L858 garLoopResultBuilder]: For program point L138-1(lines 138 142) no Hoare annotation was computed. [2021-11-20 05:38:23,370 INFO L854 garLoopResultBuilder]: At program point L138-2(lines 138 142) the Hoare annotation is: false [2021-11-20 05:38:23,370 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 108) no Hoare annotation was computed. [2021-11-20 05:38:23,370 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-11-20 05:38:23,371 INFO L861 garLoopResultBuilder]: At program point L52-2(lines 52 61) the Hoare annotation is: true [2021-11-20 05:38:23,371 INFO L858 garLoopResultBuilder]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2021-11-20 05:38:23,371 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-11-20 05:38:23,371 INFO L858 garLoopResultBuilder]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2021-11-20 05:38:23,372 INFO L858 garLoopResultBuilder]: For program point L65(lines 65 71) no Hoare annotation was computed. [2021-11-20 05:38:23,372 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2021-11-20 05:38:23,372 INFO L861 garLoopResultBuilder]: At program point __ieee754_sqrtfENTRY(lines 16 81) the Hoare annotation is: true [2021-11-20 05:38:23,372 INFO L858 garLoopResultBuilder]: For program point __ieee754_sqrtfFINAL(lines 16 81) no Hoare annotation was computed. [2021-11-20 05:38:23,372 INFO L858 garLoopResultBuilder]: For program point L37(lines 37 41) no Hoare annotation was computed. [2021-11-20 05:38:23,373 INFO L858 garLoopResultBuilder]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2021-11-20 05:38:23,373 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 34) no Hoare annotation was computed. [2021-11-20 05:38:23,373 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 58) no Hoare annotation was computed. [2021-11-20 05:38:23,373 INFO L858 garLoopResultBuilder]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2021-11-20 05:38:23,373 INFO L858 garLoopResultBuilder]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2021-11-20 05:38:23,374 INFO L858 garLoopResultBuilder]: For program point __ieee754_sqrtfEXIT(lines 16 81) no Hoare annotation was computed. [2021-11-20 05:38:23,374 INFO L861 garLoopResultBuilder]: At program point L21-2(lines 21 25) the Hoare annotation is: true [2021-11-20 05:38:23,374 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2021-11-20 05:38:23,374 INFO L858 garLoopResultBuilder]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2021-11-20 05:38:23,375 INFO L861 garLoopResultBuilder]: At program point L75-2(lines 75 79) the Hoare annotation is: true [2021-11-20 05:38:23,375 INFO L858 garLoopResultBuilder]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2021-11-20 05:38:23,375 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2021-11-20 05:38:23,375 INFO L861 garLoopResultBuilder]: At program point L38-3(lines 38 39) the Hoare annotation is: true [2021-11-20 05:38:23,375 INFO L858 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-11-20 05:38:23,376 INFO L858 garLoopResultBuilder]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2021-11-20 05:38:23,376 INFO L858 garLoopResultBuilder]: For program point L63(lines 63 72) no Hoare annotation was computed. [2021-11-20 05:38:23,380 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-20 05:38:23,381 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:38:23,391 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,397 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,398 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,399 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:38:23 BoogieIcfgContainer [2021-11-20 05:38:23,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:38:23,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:38:23,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:38:23,403 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:38:23,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:38:04" (3/4) ... [2021-11-20 05:38:23,407 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 05:38:23,414 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_sqrtf [2021-11-20 05:38:23,422 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2021-11-20 05:38:23,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-20 05:38:23,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 05:38:23,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 05:38:23,449 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) [2021-11-20 05:38:23,450 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1065353216bv32 == ix && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == \result) [2021-11-20 05:38:23,451 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1065353216bv32 == ix && aux-res == 0.0f && __signbit_float(res) == 0-aux) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x) [2021-11-20 05:38:23,452 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == 0bv32 && 1065353216bv32 == ix) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2021-11-20 05:38:23,483 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:38:23,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:38:23,484 INFO L158 Benchmark]: Toolchain (without parser) took 29434.79ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 53.6MB in the beginning and 53.2MB in the end (delta: 471.1kB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-20 05:38:23,485 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 69.2MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:38:23,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.91ms. Allocated memory is still 69.2MB. Free memory was 53.4MB in the beginning and 50.2MB in the end (delta: 3.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-11-20 05:38:23,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.70ms. Allocated memory is still 69.2MB. Free memory was 50.2MB in the beginning and 48.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:38:23,486 INFO L158 Benchmark]: Boogie Preprocessor took 44.54ms. Allocated memory is still 69.2MB. Free memory was 48.0MB in the beginning and 45.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:38:23,486 INFO L158 Benchmark]: RCFGBuilder took 10302.71ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 51.4MB in the end (delta: -5.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-20 05:38:23,487 INFO L158 Benchmark]: TraceAbstraction took 18508.16ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 51.1MB in the beginning and 59.5MB in the end (delta: -8.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-11-20 05:38:23,487 INFO L158 Benchmark]: Witness Printer took 80.90ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 53.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 05:38:23,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 69.2MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 442.91ms. Allocated memory is still 69.2MB. Free memory was 53.4MB in the beginning and 50.2MB in the end (delta: 3.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.70ms. Allocated memory is still 69.2MB. Free memory was 50.2MB in the beginning and 48.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.54ms. Allocated memory is still 69.2MB. Free memory was 48.0MB in the beginning and 45.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 10302.71ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 51.4MB in the end (delta: -5.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 18508.16ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 51.1MB in the beginning and 59.5MB in the end (delta: -8.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Witness Printer took 80.90ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 53.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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 - PositiveResult [Line: 184]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 764 SdHoareTripleChecker+Invalid, 8.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 524 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 240 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 44 HoareAnnotationTreeSize, 28 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 106 ConstructedInterpolants, 20 QuantifiedInterpolants, 352 SizeOfPredicates, 29 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: Loop Invariant [2021-11-20 05:38:23,499 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,499 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1065353216bv32 == ix && aux-res == 0.0f && __signbit_float(res) == 0-aux) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 92]: Loop Invariant [2021-11-20 05:38:23,500 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,500 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: 1065353216bv32 == ix && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 95]: Loop Invariant [2021-11-20 05:38:23,500 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-20 05:38:23,501 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: (\result == 0bv32 && 1065353216bv32 == ix) && aux-res == 0.0f && __signbit_float(res) == 0-aux RESULT: Ultimate proved your program to be correct! [2021-11-20 05:38:23,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c25d4a10-d9a8-4413-8726-45d1ccc092a1/bin/uautomizer-DQz5hQGWxF/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 Writing output log to file Ultimate.log Result: TRUE