./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:14,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:14,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:14,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:14,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:14,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:14,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:14,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:14,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:14,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:14,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:14,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:14,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:14,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:14,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:14,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:14,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:14,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:14,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:14,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:14,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:14,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:14,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:14,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:14,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:14,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:14,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:14,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:14,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:14,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:14,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:14,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:14,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:14,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:14,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:14,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:14,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:14,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:14,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:14,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:14,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:14,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:20:14,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:14,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:14,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:14,982 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:14,982 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:14,982 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:14,983 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:20:14,983 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:14,983 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:14,983 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:20:14,984 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:20:14,984 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:14,984 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:20:14,984 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:20:14,985 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:20:14,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:14,986 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:20:14,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:20:14,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:20:14,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:14,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:14,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:14,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:14,987 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:14,988 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:20:14,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:14,988 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:14,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:14,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:14,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:14,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:14,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:14,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:14,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:14,990 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:20:14,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:20:14,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:14,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:14,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:14,991 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 [2021-11-07 01:20:15,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:15,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:15,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:15,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:15,294 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:15,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-11-07 01:20:15,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data/15c5aaf11/ced6a02651494d95a247dfbbd1e54a72/FLAG3881a95dd [2021-11-07 01:20:15,764 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:15,764 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-11-07 01:20:15,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data/15c5aaf11/ced6a02651494d95a247dfbbd1e54a72/FLAG3881a95dd [2021-11-07 01:20:15,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data/15c5aaf11/ced6a02651494d95a247dfbbd1e54a72 [2021-11-07 01:20:15,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:15,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:15,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:15,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:15,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:15,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:15" (1/1) ... [2021-11-07 01:20:15,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5c62d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:15, skipping insertion in model container [2021-11-07 01:20:15,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:15" (1/1) ... [2021-11-07 01:20:15,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:15,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:16,021 WARN L228 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_f6f2c194-f828-4c90-86a7-c756fcb08960/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-11-07 01:20:16,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:16,032 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:20:16,066 WARN L228 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_f6f2c194-f828-4c90-86a7-c756fcb08960/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-11-07 01:20:16,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:16,083 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:20:16,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16 WrapperNode [2021-11-07 01:20:16,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:16,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:16,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:20:16,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:20:16,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:16,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:20:16,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:20:16,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:20:16,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:20:16,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:20:16,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:20:16,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:20:16,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (1/1) ... [2021-11-07 01:20:16,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:16,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:16,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:20:16,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:20:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:20:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:20:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:20:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-07 01:20:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-07 01:20:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:20:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:20:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:20:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-07 01:20:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:20:16,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:20:16,805 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 01:20:16,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:16 BoogieIcfgContainer [2021-11-07 01:20:16,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:20:16,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:20:16,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:20:16,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:20:16,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:20:15" (1/3) ... [2021-11-07 01:20:16,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c91e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:16, skipping insertion in model container [2021-11-07 01:20:16,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:16" (2/3) ... [2021-11-07 01:20:16,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c91e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:16, skipping insertion in model container [2021-11-07 01:20:16,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:16" (3/3) ... [2021-11-07 01:20:16,820 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2021-11-07 01:20:16,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:20:16,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:20:16,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:20:16,895 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=FINITE_AUTOMATA, 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 [2021-11-07 01:20:16,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:20:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.75) internal successors, (49), 29 states have internal predecessors, (49), 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) [2021-11-07 01:20:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:20:16,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:16,939 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:16,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:20:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash -836543721, now seen corresponding path program 1 times [2021-11-07 01:20:16,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:20:16,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580072042] [2021-11-07 01:20:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:16,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:20:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:17,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:20:17,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580072042] [2021-11-07 01:20:17,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580072042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:17,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:17,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:20:17,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594779108] [2021-11-07 01:20:17,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:20:17,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:20:17,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:20:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:20:17,217 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.75) internal successors, (49), 29 states have internal predecessors, (49), 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:17,237 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2021-11-07 01:20:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:20:17,238 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 01:20:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:17,249 INFO L225 Difference]: With dead ends: 59 [2021-11-07 01:20:17,249 INFO L226 Difference]: Without dead ends: 28 [2021-11-07 01:20:17,252 INFO L786 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 [2021-11-07 01:20:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-07 01:20:17,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-07 01:20:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 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) [2021-11-07 01:20:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-11-07 01:20:17,292 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 7 [2021-11-07 01:20:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:17,293 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-07 01:20:17,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-11-07 01:20:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:20:17,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:17,295 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:17,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:20:17,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:20:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2065220720, now seen corresponding path program 1 times [2021-11-07 01:20:17,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:20:17,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868550018] [2021-11-07 01:20:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:17,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:20:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:20:17,388 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:20:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:20:17,542 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:20:17,542 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:20:17,544 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:20:17,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:20:17,552 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:20:17,555 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:20:17,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:20:17 BoogieIcfgContainer [2021-11-07 01:20:17,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:20:17,607 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:20:17,607 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:20:17,608 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:20:17,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:16" (3/4) ... [2021-11-07 01:20:17,612 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:20:17,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:20:17,615 INFO L168 Benchmark]: Toolchain (without parser) took 1824.18 ms. Allocated memory is still 115.3 MB. Free memory was 77.0 MB in the beginning and 85.7 MB in the end (delta: -8.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:17,616 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 115.3 MB. Free memory is still 93.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:17,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.46 ms. Allocated memory is still 115.3 MB. Free memory was 76.7 MB in the beginning and 88.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:17,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.72 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 86.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:17,621 INFO L168 Benchmark]: Boogie Preprocessor took 33.16 ms. Allocated memory is still 115.3 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:17,628 INFO L168 Benchmark]: RCFGBuilder took 643.52 ms. Allocated memory is still 115.3 MB. Free memory was 84.4 MB in the beginning and 66.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:17,628 INFO L168 Benchmark]: TraceAbstraction took 797.13 ms. Allocated memory is still 115.3 MB. Free memory was 66.1 MB in the beginning and 86.4 MB in the end (delta: -20.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:17,629 INFO L168 Benchmark]: Witness Printer took 5.83 ms. Allocated memory is still 115.3 MB. Free memory was 86.4 MB in the beginning and 85.7 MB in the end (delta: 649.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:17,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 115.3 MB. Free memory is still 93.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.46 ms. Allocated memory is still 115.3 MB. Free memory was 76.7 MB in the beginning and 88.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.72 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 86.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.16 ms. Allocated memory is still 115.3 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 643.52 ms. Allocated memory is still 115.3 MB. Free memory was 84.4 MB in the beginning and 66.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 797.13 ms. Allocated memory is still 115.3 MB. Free memory was 66.1 MB in the beginning and 86.4 MB in the end (delta: -20.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.83 ms. Allocated memory is still 115.3 MB. Free memory was 86.4 MB in the beginning and 85.7 MB in the end (delta: 649.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 124]: 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 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L119] float x = 0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L124] reach_error() VAL [halF_exp={11:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=30occurred 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, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:20:17,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/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_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:20,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:20,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:20,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:20,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:20,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:20,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:20,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:20,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:20,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:20,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:20,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:20,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:20,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:20,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:20,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:20,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:20,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:20,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:20,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:20,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:20,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:20,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:20,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:20,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:20,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:20,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:20,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:20,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:20,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:20,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:20,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:20,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:20,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:20,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:20,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:20,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:20,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:20,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:20,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:20,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:20,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:20:20,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:20,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:20,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:20,276 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:20,276 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:20,277 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:20,277 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:20,277 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:20,277 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:20,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:20,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:20:20,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:20:20,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:20,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:20,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:20,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:20,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:20,280 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:20:20,282 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:20:20,282 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:20:20,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:20,282 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:20,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:20,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:20,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:20:20,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:20,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:20,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:20,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:20,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:20,287 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:20:20,288 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:20:20,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:20,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:20,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:20,288 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_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 [2021-11-07 01:20:20,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:20,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:20,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:20,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:20,738 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:20,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-11-07 01:20:20,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data/45c44b7a8/a00f04ac45674bab9cac3515fcf642bc/FLAGfdbd83cd9 [2021-11-07 01:20:21,374 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:21,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-11-07 01:20:21,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data/45c44b7a8/a00f04ac45674bab9cac3515fcf642bc/FLAGfdbd83cd9 [2021-11-07 01:20:21,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/data/45c44b7a8/a00f04ac45674bab9cac3515fcf642bc [2021-11-07 01:20:21,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:21,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:21,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:21,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:21,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:21,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:21" (1/1) ... [2021-11-07 01:20:21,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2767d82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:21, skipping insertion in model container [2021-11-07 01:20:21,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:21" (1/1) ... [2021-11-07 01:20:21,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:21,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:22,011 WARN L228 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_f6f2c194-f828-4c90-86a7-c756fcb08960/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-11-07 01:20:22,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:22,028 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:20:22,107 WARN L228 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_f6f2c194-f828-4c90-86a7-c756fcb08960/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-11-07 01:20:22,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:22,134 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:20:22,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22 WrapperNode [2021-11-07 01:20:22,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:22,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:22,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:20:22,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:20:22,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:22,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:20:22,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:20:22,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:20:22,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:20:22,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:20:22,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:20:22,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:20:22,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (1/1) ... [2021-11-07 01:20:22,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:22,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:22,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:20:22,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:20:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-07 01:20:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:20:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:20:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-07 01:20:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:20:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:20:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:20:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-07 01:20:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:20:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:20:31,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:20:31,876 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 01:20:31,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:31 BoogieIcfgContainer [2021-11-07 01:20:31,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:20:31,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:20:31,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:20:31,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:20:31,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:20:21" (1/3) ... [2021-11-07 01:20:31,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352fb708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:31, skipping insertion in model container [2021-11-07 01:20:31,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:22" (2/3) ... [2021-11-07 01:20:31,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352fb708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:31, skipping insertion in model container [2021-11-07 01:20:31,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:31" (3/3) ... [2021-11-07 01:20:31,887 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2021-11-07 01:20:31,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:20:31,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:20:31,936 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:20:31,943 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=FINITE_AUTOMATA, 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 [2021-11-07 01:20:31,943 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:20:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 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) [2021-11-07 01:20:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:20:31,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:31,964 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:31,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:20:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2021-11-07 01:20:31,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:31,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308098779] [2021-11-07 01:20:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:31,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:31,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:31,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:31,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:20:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:32,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:20:32,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:32,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:32,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:32,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308098779] [2021-11-07 01:20:32,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308098779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:32,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:32,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:20:32,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417981114] [2021-11-07 01:20:32,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:20:32,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:20:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:20:32,751 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-07 01:20:32,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:32,775 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2021-11-07 01:20:32,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:20:32,776 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-07 01:20:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:32,785 INFO L225 Difference]: With dead ends: 70 [2021-11-07 01:20:32,785 INFO L226 Difference]: Without dead ends: 33 [2021-11-07 01:20:32,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:20:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-07 01:20:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-07 01:20:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 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) [2021-11-07 01:20:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-11-07 01:20:32,821 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2021-11-07 01:20:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:32,821 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-11-07 01:20:32,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-07 01:20:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-11-07 01:20:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:20:32,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:32,823 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:32,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:33,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:33,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:20:33,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2021-11-07 01:20:33,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:33,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412491879] [2021-11-07 01:20:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:33,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:33,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:33,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:33,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:20:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:33,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:20:33,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:33,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:34,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:34,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412491879] [2021-11-07 01:20:34,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412491879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:34,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:34,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:20:34,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908327337] [2021-11-07 01:20:34,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:20:34,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:20:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:20:34,176 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2021-11-07 01:20:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:41,348 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2021-11-07 01:20:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:20:41,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 9 [2021-11-07 01:20:41,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:41,430 INFO L225 Difference]: With dead ends: 54 [2021-11-07 01:20:41,431 INFO L226 Difference]: Without dead ends: 33 [2021-11-07 01:20:41,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:20:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-07 01:20:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-11-07 01:20:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2021-11-07 01:20:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-11-07 01:20:41,437 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2021-11-07 01:20:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:41,438 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-11-07 01:20:41,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2021-11-07 01:20:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-11-07 01:20:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:20:41,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:41,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:41,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:20:41,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:41,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:20:41,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:41,655 INFO L85 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2021-11-07 01:20:41,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:41,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126347821] [2021-11-07 01:20:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:41,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:41,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:41,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:41,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:20:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:42,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:20:42,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:42,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:46,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:46,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126347821] [2021-11-07 01:20:46,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126347821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:46,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:46,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:20:46,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573351497] [2021-11-07 01:20:46,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:20:46,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:20:46,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:20:46,606 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 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) [2021-11-07 01:21:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:15,194 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-11-07 01:21:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:21:15,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 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 [2021-11-07 01:21:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:15,196 INFO L225 Difference]: With dead ends: 33 [2021-11-07 01:21:15,196 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 01:21:15,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:21:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 01:21:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-07 01:21:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-11-07 01:21:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-07 01:21:15,204 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2021-11-07 01:21:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:15,205 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-07 01:21:15,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 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) [2021-11-07 01:21:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-07 01:21:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:21:15,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:15,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:15,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:15,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:15,407 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:21:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2021-11-07 01:21:15,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:15,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653436316] [2021-11-07 01:21:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:15,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:15,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:15,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:15,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:21:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:16,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:21:16,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:17,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:19,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:19,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653436316] [2021-11-07 01:21:19,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653436316] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:19,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:19,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:21:19,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604918645] [2021-11-07 01:21:19,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:21:19,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:19,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:21:19,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:21:19,719 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-07 01:21:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:19,863 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-11-07 01:21:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:21:19,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 17 [2021-11-07 01:21:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:19,864 INFO L225 Difference]: With dead ends: 29 [2021-11-07 01:21:19,864 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:21:19,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:21:19,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:21:19,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:21:19,865 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) [2021-11-07 01:21:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:21:19,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-07 01:21:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:19,866 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:21:19,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-07 01:21:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:21:19,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:21:19,870 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:21:19,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:21:20,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:20,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:21:20,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:20,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:20,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:20,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:20,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:20,260 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 75) no Hoare annotation was computed. [2021-11-07 01:21:20,260 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:21:20,261 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-11-07 01:21:20,261 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 01:21:20,261 INFO L857 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-11-07 01:21:20,261 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 54) no Hoare annotation was computed. [2021-11-07 01:21:20,261 INFO L857 garLoopResultBuilder]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-11-07 01:21:20,261 INFO L853 garLoopResultBuilder]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2021-11-07 01:21:20,261 INFO L860 garLoopResultBuilder]: At program point L128(lines 113 129) the Hoare annotation is: true [2021-11-07 01:21:20,262 INFO L857 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-11-07 01:21:20,262 INFO L857 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2021-11-07 01:21:20,262 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2021-11-07 01:21:20,262 INFO L857 garLoopResultBuilder]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2021-11-07 01:21:20,263 INFO L857 garLoopResultBuilder]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2021-11-07 01:21:20,263 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 56) no Hoare annotation was computed. [2021-11-07 01:21:20,263 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-11-07 01:21:20,263 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-11-07 01:21:20,264 INFO L857 garLoopResultBuilder]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2021-11-07 01:21:20,264 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 74) no Hoare annotation was computed. [2021-11-07 01:21:20,264 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 01:21:20,264 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 126) no Hoare annotation was computed. [2021-11-07 01:21:20,264 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-11-07 01:21:20,265 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2021-11-07 01:21:20,273 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-11-07 01:21:20,273 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-11-07 01:21:20,274 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:21:20,274 INFO L857 garLoopResultBuilder]: For program point L124(line 124) no Hoare annotation was computed. [2021-11-07 01:21:20,274 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-11-07 01:21:20,274 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2021-11-07 01:21:20,275 INFO L857 garLoopResultBuilder]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2021-11-07 01:21:20,275 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 110) no Hoare annotation was computed. [2021-11-07 01:21:20,275 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-11-07 01:21:20,275 INFO L853 garLoopResultBuilder]: At program point L109(lines 38 111) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)))) (and (= ~one_exp~0 .cse0) (= (fp.add currentRoundingMode .cse0 (_ +zero 8 24)) |ULTIMATE.start___ieee754_expf_#res|) (= ULTIMATE.start___ieee754_expf_~x (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven))) [2021-11-07 01:21:20,276 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2021-11-07 01:21:20,276 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ~huge_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ULTIMATE.start___ieee754_expf_~x (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-07 01:21:20,276 INFO L857 garLoopResultBuilder]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2021-11-07 01:21:20,279 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-07 01:21:20,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:21:20,289 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-07 01:21:20,294 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-07 01:21:20,296 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-07 01:21:20,296 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-07 01:21:20,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:21:20 BoogieIcfgContainer [2021-11-07 01:21:20,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:21:20,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:21:20,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:21:20,298 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:21:20,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:31" (3/4) ... [2021-11-07 01:21:20,302 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:21:20,313 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-07 01:21:20,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-07 01:21:20,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:21:20,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:21:20,340 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) == \result) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-07 01:21:20,378 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:21:20,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:21:20,380 INFO L168 Benchmark]: Toolchain (without parser) took 58636.13 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 89.0 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:21:20,380 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:21:20,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.04 ms. Allocated memory is still 94.4 MB. Free memory was 59.4 MB in the beginning and 76.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:20,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.87 ms. Allocated memory is still 94.4 MB. Free memory was 76.4 MB in the beginning and 74.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:20,382 INFO L168 Benchmark]: Boogie Preprocessor took 41.11 ms. Allocated memory is still 94.4 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:20,382 INFO L168 Benchmark]: RCFGBuilder took 9655.90 ms. Allocated memory is still 94.4 MB. Free memory was 72.6 MB in the beginning and 55.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:20,383 INFO L168 Benchmark]: TraceAbstraction took 48416.84 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 55.1 MB in the beginning and 95.3 MB in the end (delta: -40.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:20,383 INFO L168 Benchmark]: Witness Printer took 80.71 ms. Allocated memory is still 115.3 MB. Free memory was 95.3 MB in the beginning and 89.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:20,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.04 ms. Allocated memory is still 94.4 MB. Free memory was 59.4 MB in the beginning and 76.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.87 ms. Allocated memory is still 94.4 MB. Free memory was 76.4 MB in the beginning and 74.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.11 ms. Allocated memory is still 94.4 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9655.90 ms. Allocated memory is still 94.4 MB. Free memory was 72.6 MB in the beginning and 55.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 48416.84 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 55.1 MB in the beginning and 95.3 MB in the end (delta: -40.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Witness Printer took 80.71 ms. Allocated memory is still 115.3 MB. Free memory was 95.3 MB in the beginning and 89.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 124]: 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 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 103 SDslu, 173 SDs, 0 SdLazy, 57 SolverSat, 5 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 35.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 48 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 2 QuantifiedInterpolants, 676 SizeOfPredicates, 19 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 [2021-11-07 01:21:20,393 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-07 01:21:20,394 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) == \result) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant [2021-11-07 01:21:20,395 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-07 01:21:20,396 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && huge_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-07 01:21:20,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f2c194-f828-4c90-86a7-c756fcb08960/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE