./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0 --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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 15:53:04,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:53:04,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:53:04,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:53:04,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:53:04,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:53:04,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:53:04,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:53:04,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:53:04,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:53:04,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:53:04,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:53:04,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:53:04,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:53:04,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:53:04,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:53:04,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:53:04,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:53:04,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:53:04,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:53:04,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:53:04,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:53:04,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:53:04,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:53:04,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:53:04,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:53:04,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:53:04,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:53:04,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:53:04,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:53:04,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:53:04,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:53:04,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:53:04,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:53:04,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:53:04,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:53:04,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:53:04,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:53:04,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:53:04,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:53:04,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:53:04,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 15:53:04,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:53:04,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:53:04,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:53:04,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:53:04,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:53:04,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:53:04,324 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:53:04,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:53:04,324 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:53:04,325 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:53:04,325 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:53:04,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:53:04,325 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:53:04,326 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:53:04,326 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:53:04,326 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:53:04,326 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:53:04,327 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:53:04,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:53:04,328 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:53:04,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:53:04,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:53:04,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:53:04,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:53:04,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:53:04,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:53:04,335 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:53:04,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:53:04,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:53:04,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:53:04,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:53:04,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:53:04,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:53:04,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:53:04,337 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:53:04,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:53:04,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:53:04,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:53:04,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:53:04,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:53:04,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:53:04,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2022-11-16 15:53:04,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:53:04,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:53:04,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:53:04,634 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:53:04,635 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:53:04,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-11-16 15:53:04,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/data/f5c701b33/39c4461b2b4d4dc580dc4651fa823cf6/FLAG5944c6779 [2022-11-16 15:53:05,190 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:53:05,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-11-16 15:53:05,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/data/f5c701b33/39c4461b2b4d4dc580dc4651fa823cf6/FLAG5944c6779 [2022-11-16 15:53:05,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/data/f5c701b33/39c4461b2b4d4dc580dc4651fa823cf6 [2022-11-16 15:53:05,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:53:05,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:53:05,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:53:05,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:53:05,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:53:05,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492195b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05, skipping insertion in model container [2022-11-16 15:53:05,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:53:05,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:53:05,774 WARN L229 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_e9edb02f-7a0c-4309-8772-855505646c46/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-11-16 15:53:05,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:53:05,833 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:53:05,844 WARN L229 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_e9edb02f-7a0c-4309-8772-855505646c46/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-11-16 15:53:05,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:53:05,880 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:53:05,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05 WrapperNode [2022-11-16 15:53:05,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:53:05,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:53:05,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:53:05,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:53:05,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,935 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 137 [2022-11-16 15:53:05,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:53:05,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:53:05,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:53:05,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:53:05,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,972 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:05,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:53:05,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:53:05,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:53:05,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:53:05,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (1/1) ... [2022-11-16 15:53:06,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:53:06,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:06,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:53:06,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:53:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:53:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:53:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:53:06,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:53:06,187 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:53:06,189 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:53:06,586 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:53:07,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:53:07,148 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 15:53:07,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:53:07 BoogieIcfgContainer [2022-11-16 15:53:07,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:53:07,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:53:07,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:53:07,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:53:07,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:53:05" (1/3) ... [2022-11-16 15:53:07,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8493d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:07, skipping insertion in model container [2022-11-16 15:53:07,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:05" (2/3) ... [2022-11-16 15:53:07,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8493d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:07, skipping insertion in model container [2022-11-16 15:53:07,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:53:07" (3/3) ... [2022-11-16 15:53:07,166 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2022-11-16 15:53:07,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:53:07,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:53:07,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:53:07,274 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@485af332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:53:07,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:53:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 15:53:07,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:07,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 15:53:07,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash 294318674, now seen corresponding path program 1 times [2022-11-16 15:53:07,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:07,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145616218] [2022-11-16 15:53:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:07,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:07,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:07,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145616218] [2022-11-16 15:53:07,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145616218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:07,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:07,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 15:53:07,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222124583] [2022-11-16 15:53:07,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:07,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:53:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:53:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:53:07,819 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-16 15:53:07,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:07,870 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2022-11-16 15:53:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:53:07,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-16 15:53:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:07,881 INFO L225 Difference]: With dead ends: 15 [2022-11-16 15:53:07,881 INFO L226 Difference]: Without dead ends: 8 [2022-11-16 15:53:07,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:53:07,888 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:07,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:53:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-16 15:53:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-16 15:53:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2022-11-16 15:53:07,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2022-11-16 15:53:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:07,923 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2022-11-16 15:53:07,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-16 15:53:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2022-11-16 15:53:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 15:53:07,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:07,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 15:53:07,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:53:07,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:53:07,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:07,926 INFO L85 PathProgramCache]: Analyzing trace with hash 587732581, now seen corresponding path program 1 times [2022-11-16 15:53:07,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:07,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849973174] [2022-11-16 15:53:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:07,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:08,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:08,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849973174] [2022-11-16 15:53:08,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849973174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:53:08,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181177040] [2022-11-16 15:53:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:08,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:08,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:08,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:08,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9edb02f-7a0c-4309-8772-855505646c46/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:53:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:08,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 15:53:08,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:08,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:53:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:08,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181177040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:53:08,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1420128241] [2022-11-16 15:53:08,664 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-16 15:53:08,664 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:53:08,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:53:08,674 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:53:08,674 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:58:40,151 WARN L233 SmtUtils]: Spent 5.46m on a formula simplification. DAG size of input: 20872 DAG size of output: 20811 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)