./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH --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 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:31:43,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:31:43,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:31:43,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:31:43,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:31:43,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:31:43,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:31:43,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:31:43,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:31:43,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:31:43,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:31:43,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:31:43,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:31:43,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:31:43,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:31:43,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:31:43,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:31:43,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:31:43,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:31:43,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:31:43,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:31:43,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:31:43,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:31:43,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:31:43,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:31:43,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:31:43,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:31:43,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:31:43,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:31:43,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:31:43,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:31:43,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:31:43,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:31:43,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:31:43,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:31:43,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:31:43,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:31:43,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:31:43,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:31:43,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:31:43,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:31:43,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:31:43,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:31:43,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:31:43,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:31:43,286 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:31:43,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:31:43,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:31:43,287 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:31:43,287 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:31:43,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:31:43,287 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:31:43,287 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:31:43,287 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:31:43,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:31:43,294 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:31:43,294 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:31:43,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:31:43,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:31:43,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:31:43,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:31:43,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:31:43,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:31:43,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:31:43,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:31:43,297 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:31:43,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:31:43,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:31:43,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:31:43,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:31:43,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:31:43,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:31:43,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:31:43,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:31:43,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:31:43,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:31:43,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:31:43,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:31:43,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:31:43,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:31:43,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:31:43,303 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_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2021-11-03 05:31:43,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:31:43,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:31:43,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:31:43,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:31:43,610 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:31:43,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2021-11-03 05:31:43,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data/be28aea68/21c9e123325746ce808ed9a12057dbd5/FLAG1541d4250 [2021-11-03 05:31:44,204 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:31:44,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2021-11-03 05:31:44,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data/be28aea68/21c9e123325746ce808ed9a12057dbd5/FLAG1541d4250 [2021-11-03 05:31:44,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data/be28aea68/21c9e123325746ce808ed9a12057dbd5 [2021-11-03 05:31:44,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:31:44,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:31:44,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:31:44,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:31:44,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:31:44,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e576577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44, skipping insertion in model container [2021-11-03 05:31:44,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:31:44,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:31:44,855 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_f9b1946c-4c29-4f69-8908-f25df2e9bc45/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2021-11-03 05:31:44,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:31:44,883 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:31:44,899 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_f9b1946c-4c29-4f69-8908-f25df2e9bc45/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2021-11-03 05:31:44,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:31:44,914 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:31:44,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44 WrapperNode [2021-11-03 05:31:44,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:31:44,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:31:44,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:31:44,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:31:44,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:31:44,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:31:44,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:31:44,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:31:44,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:31:44,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:31:44,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:31:44,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:31:44,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (1/1) ... [2021-11-03 05:31:44,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:31:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:31:45,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:31:45,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:31:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:31:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:31:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:31:45,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:31:45,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:31:45,401 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:31:45,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:45 BoogieIcfgContainer [2021-11-03 05:31:45,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:31:45,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:31:45,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:31:45,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:31:45,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:31:44" (1/3) ... [2021-11-03 05:31:45,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1fb10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:31:45, skipping insertion in model container [2021-11-03 05:31:45,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:44" (2/3) ... [2021-11-03 05:31:45,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1fb10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:31:45, skipping insertion in model container [2021-11-03 05:31:45,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:45" (3/3) ... [2021-11-03 05:31:45,427 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2021-11-03 05:31:45,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:31:45,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:31:45,498 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:31:45,507 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 [2021-11-03 05:31:45,507 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:31:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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) [2021-11-03 05:31:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:31:45,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:45,532 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:31:45,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:31:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1394921896, now seen corresponding path program 1 times [2021-11-03 05:31:45,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:45,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538813256] [2021-11-03 05:31:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:45,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:31:45,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:31:45,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538813256] [2021-11-03 05:31:45,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538813256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:45,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:45,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 05:31:45,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360018939] [2021-11-03 05:31:45,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:31:45,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:31:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:31:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:31:45,787 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:45,929 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2021-11-03 05:31:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:31:45,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 05:31:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:45,945 INFO L225 Difference]: With dead ends: 89 [2021-11-03 05:31:45,945 INFO L226 Difference]: Without dead ends: 73 [2021-11-03 05:31:45,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:31:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-03 05:31:45,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 19. [2021-11-03 05:31:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-11-03 05:31:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-03 05:31:46,003 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2021-11-03 05:31:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:46,005 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-03 05:31:46,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:31:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-03 05:31:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:31:46,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:46,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:31:46,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:31:46,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:31:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1411932557, now seen corresponding path program 1 times [2021-11-03 05:31:46,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:31:46,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678773926] [2021-11-03 05:31:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:46,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:31:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:31:46,051 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:31:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:31:46,137 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 05:31:46,137 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:31:46,139 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:31:46,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:31:46,145 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 05:31:46,149 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:31:46,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:31:46 BoogieIcfgContainer [2021-11-03 05:31:46,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:31:46,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:31:46,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:31:46,185 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:31:46,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:45" (3/4) ... [2021-11-03 05:31:46,189 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:31:46,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:31:46,191 INFO L168 Benchmark]: Toolchain (without parser) took 1612.43 ms. Allocated memory is still 155.2 MB. Free memory was 123.6 MB in the beginning and 87.6 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:46,192 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 92.3 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:31:46,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.88 ms. Allocated memory is still 155.2 MB. Free memory was 123.2 MB in the beginning and 130.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:46,194 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.74 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 129.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:46,194 INFO L168 Benchmark]: Boogie Preprocessor took 22.21 ms. Allocated memory is still 155.2 MB. Free memory was 129.4 MB in the beginning and 128.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:46,195 INFO L168 Benchmark]: RCFGBuilder took 430.27 ms. Allocated memory is still 155.2 MB. Free memory was 128.4 MB in the beginning and 116.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:46,196 INFO L168 Benchmark]: TraceAbstraction took 778.51 ms. Allocated memory is still 155.2 MB. Free memory was 115.8 MB in the beginning and 87.6 MB in the end (delta: 28.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:31:46,197 INFO L168 Benchmark]: Witness Printer took 4.90 ms. Allocated memory is still 155.2 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:31:46,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 92.3 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.88 ms. Allocated memory is still 155.2 MB. Free memory was 123.2 MB in the beginning and 130.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.74 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 129.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.21 ms. Allocated memory is still 155.2 MB. Free memory was 129.4 MB in the beginning and 128.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 430.27 ms. Allocated memory is still 155.2 MB. Free memory was 128.4 MB in the beginning and 116.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 778.51 ms. Allocated memory is still 155.2 MB. Free memory was 115.8 MB in the beginning and 87.6 MB in the end (delta: 28.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.90 ms. Allocated memory is still 155.2 MB. Free memory is still 87.6 MB. There was no memory consumed. 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: 66]: 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 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 47. Possible FailurePath: [L1] int __return_main; [L14] float main__X; [L15] float main__Y; [L16] float main__S; [L17] float main__R; [L18] float main__D; [L19] int main__i; [L20] main__Y = 0 [L21] main__i = 0 VAL [__return_main=0] [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; VAL [__return_main=0] [L28] COND TRUE main__X >= -128.0 VAL [__return_main=0] [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0] [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; VAL [__return_main=0] [L37] COND TRUE main__D >= 0.0 VAL [__return_main=0] [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 VAL [__return_main=0] [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D [L52] int main____CPAchecker_TMP_2; VAL [__return_main=0] [L53] COND FALSE !(main__Y >= -129.0) VAL [__return_main=0] [L79] main____CPAchecker_TMP_2 = 0 VAL [__return_main=0] [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L64] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L66] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 120 SDslu, 99 SDs, 0 SdLazy, 31 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 54 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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 [2021-11-03 05:31:46,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/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_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH --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 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:31:48,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:31:48,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:31:48,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:31:48,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:31:48,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:31:48,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:31:48,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:31:48,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:31:48,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:31:48,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:31:48,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:31:48,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:31:48,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:31:48,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:31:48,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:31:48,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:31:48,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:31:48,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:31:48,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:31:48,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:31:48,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:31:48,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:31:48,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:31:48,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:31:48,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:31:48,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:31:48,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:31:48,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:31:48,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:31:48,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:31:48,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:31:48,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:31:48,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:31:48,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:31:48,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:31:48,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:31:48,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:31:48,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:31:48,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:31:48,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:31:48,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:31:48,927 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:31:48,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:31:48,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:31:48,929 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:31:48,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:31:48,929 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:31:48,930 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:31:48,930 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:31:48,930 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:31:48,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:31:48,933 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:31:48,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:31:48,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:31:48,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:31:48,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:31:48,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:31:48,934 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:31:48,934 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:31:48,934 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:31:48,935 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:31:48,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:31:48,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:31:48,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:31:48,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:31:48,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:31:48,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:31:48,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:31:48,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:31:48,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:31:48,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:31:48,937 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:31:48,937 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:31:48,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:31:48,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:31:48,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:31:48,939 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_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18b0d5e6a0e5bf3511d59ae2b1faedfad3abe1ea74492067ae408dc7e088829e [2021-11-03 05:31:49,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:31:49,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:31:49,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:31:49,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:31:49,335 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:31:49,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2021-11-03 05:31:49,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data/8659101ed/99b5fbb9938b4ad385b5acc8b610081e/FLAG1b6fe1d3e [2021-11-03 05:31:50,066 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:31:50,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2021-11-03 05:31:50,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data/8659101ed/99b5fbb9938b4ad385b5acc8b610081e/FLAG1b6fe1d3e [2021-11-03 05:31:50,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/data/8659101ed/99b5fbb9938b4ad385b5acc8b610081e [2021-11-03 05:31:50,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:31:50,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:31:50,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:31:50,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:31:50,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:31:50,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c19d788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50, skipping insertion in model container [2021-11-03 05:31:50,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:31:50,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:31:50,608 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_f9b1946c-4c29-4f69-8908-f25df2e9bc45/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2021-11-03 05:31:50,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:31:50,632 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:31:50,655 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_f9b1946c-4c29-4f69-8908-f25df2e9bc45/sv-benchmarks/c/float-benchs/rlim_invariant.c.p+cfa-reducer.c[1464,1477] [2021-11-03 05:31:50,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:31:50,674 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:31:50,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50 WrapperNode [2021-11-03 05:31:50,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:31:50,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:31:50,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:31:50,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:31:50,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:31:50,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:31:50,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:31:50,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:31:50,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:31:50,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:31:50,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:31:50,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:31:50,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (1/1) ... [2021-11-03 05:31:50,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:31:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:31:50,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:31:50,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:31:50,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:31:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:31:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:31:50,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:31:52,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:31:52,361 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:31:52,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:52 BoogieIcfgContainer [2021-11-03 05:31:52,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:31:52,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:31:52,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:31:52,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:31:52,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:31:50" (1/3) ... [2021-11-03 05:31:52,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291b51c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:31:52, skipping insertion in model container [2021-11-03 05:31:52,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:31:50" (2/3) ... [2021-11-03 05:31:52,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291b51c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:31:52, skipping insertion in model container [2021-11-03 05:31:52,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:31:52" (3/3) ... [2021-11-03 05:31:52,373 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2021-11-03 05:31:52,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:31:52,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:31:52,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:31:52,434 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 [2021-11-03 05:31:52,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:31:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-11-03 05:31:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:31:52,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:52,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:31:52,454 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:31:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash -34829450, now seen corresponding path program 1 times [2021-11-03 05:31:52,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:31:52,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216276831] [2021-11-03 05:31:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:52,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:31:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:31:52,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:31:52,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:31:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:52,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:31:52,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:31:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:31:52,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:31:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:31:53,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:31:53,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216276831] [2021-11-03 05:31:53,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216276831] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:31:53,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:31:53,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:31:53,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269680146] [2021-11-03 05:31:53,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:31:53,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:31:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:31:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:31:53,045 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-03 05:31:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:31:53,137 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2021-11-03 05:31:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:31:53,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-11-03 05:31:53,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:31:53,149 INFO L225 Difference]: With dead ends: 71 [2021-11-03 05:31:53,150 INFO L226 Difference]: Without dead ends: 57 [2021-11-03 05:31:53,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:31:53,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-03 05:31:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 23. [2021-11-03 05:31:53,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 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) [2021-11-03 05:31:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-11-03 05:31:53,193 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16 [2021-11-03 05:31:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:31:53,194 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-11-03 05:31:53,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-03 05:31:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-11-03 05:31:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:31:53,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:31:53,196 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:31:53,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:31:53,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:31:53,418 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:31:53,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:31:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash -17818789, now seen corresponding path program 1 times [2021-11-03 05:31:53,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:31:53,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862631971] [2021-11-03 05:31:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:31:53,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:31:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:31:53,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:31:53,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:31:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:31:53,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:31:53,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:32:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:02,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:32:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:53,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:32:53,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862631971] [2021-11-03 05:32:53,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862631971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:53,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:53,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-03 05:32:53,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720934347] [2021-11-03 05:32:53,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:32:53,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:32:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:32:53,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=72, Unknown=4, NotChecked=0, Total=110 [2021-11-03 05:32:53,615 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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) [2021-11-03 05:33:44,457 WARN L207 SmtUtils]: Spent 21.07 s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-03 05:34:06,343 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-03 05:35:50,026 WARN L207 SmtUtils]: Spent 15.79 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-03 05:38:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:38,493 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2021-11-03 05:38:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:38:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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 16 [2021-11-03 05:38:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:38,505 INFO L225 Difference]: With dead ends: 130 [2021-11-03 05:38:38,505 INFO L226 Difference]: Without dead ends: 109 [2021-11-03 05:38:38,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 129.2s TimeCoverageRelationStatistics Valid=95, Invalid=194, Unknown=17, NotChecked=0, Total=306 [2021-11-03 05:38:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-03 05:38:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 35. [2021-11-03 05:38:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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) [2021-11-03 05:38:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2021-11-03 05:38:38,520 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 16 [2021-11-03 05:38:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:38,520 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-03 05:38:38,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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) [2021-11-03 05:38:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2021-11-03 05:38:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 05:38:38,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:38,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:38,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:38,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:38,723 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:38,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:38,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1069421883, now seen corresponding path program 1 times [2021-11-03 05:38:38,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:38,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534913235] [2021-11-03 05:38:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:38,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:38,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:38,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:38,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9b1946c-4c29-4f69-8908-f25df2e9bc45/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:38:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:38,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:38:38,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:38:44,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:39:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:39:37,755 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:39:37,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534913235] [2021-11-03 05:39:37,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534913235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:39:37,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:39:37,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-03 05:39:37,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495942748] [2021-11-03 05:39:37,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:39:37,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:39:37,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:39:37,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=72, Unknown=4, NotChecked=0, Total=110 [2021-11-03 05:39:37,758 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 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) [2021-11-03 05:40:19,366 WARN L207 SmtUtils]: Spent 18.10 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-03 05:41:22,728 WARN L207 SmtUtils]: Spent 8.46 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-03 05:41:30,227 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~main__R~0 (_ FloatingPoint 8 24)) (ULTIMATE.start_main_~main__D~0 (_ FloatingPoint 8 24))) (and (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~main__D~0) (_ +zero 11 53)) (= c_ULTIMATE.start_main_~main__Y~0 (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) ULTIMATE.start_main_~main__D~0)) (fp.geq ULTIMATE.start_main_~main__R~0 ULTIMATE.start_main_~main__D~0))) (forall ((ULTIMATE.start_main_~main__D~0 (_ FloatingPoint 8 24))) (or (not (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~main__D~0) (_ +zero 11 53))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__Y~0 ULTIMATE.start_main_~main__D~0)) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (forall ((ULTIMATE.start_main_~main__R~0 (_ FloatingPoint 8 24))) (not (fp.geq ULTIMATE.start_main_~main__R~0 ULTIMATE.start_main_~main__D~0))))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__D~0) (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~main__Y~0 c_ULTIMATE.start_main_~main__D~0)) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (forall ((ULTIMATE.start_main_~main__R~0 (_ FloatingPoint 8 24))) (not (fp.geq ULTIMATE.start_main_~main__R~0 c_ULTIMATE.start_main_~main__D~0)))) (= c_ULTIMATE.start_main_~main__S~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-11-03 05:43:50,203 WARN L207 SmtUtils]: Spent 24.69 s on a formula simplification that was a NOOP. DAG size: 29 [2021-11-03 05:44:44,520 WARN L207 SmtUtils]: Spent 6.34 s on a formula simplification that was a NOOP. DAG size: 20 [2021-11-03 05:45:36,038 WARN L207 SmtUtils]: Spent 18.56 s on a formula simplification that was a NOOP. DAG size: 33