./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark29_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark29_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ea6dc0bafa5a28653d9fabe4d322befcb916956980332e0149835c6371af6a1 --- 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-5e519f3 [2022-11-03 02:03:13,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:03:13,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:03:13,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:03:13,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:03:13,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:03:13,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:03:13,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:03:13,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:03:13,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:03:13,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:03:13,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:03:13,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:03:13,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:03:13,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:03:13,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:03:13,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:03:13,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:03:13,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:03:13,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:03:13,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:03:13,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:03:13,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:03:13,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:03:13,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:03:13,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:03:13,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:03:13,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:03:13,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:03:13,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:03:13,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:03:13,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:03:13,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:03:13,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:03:13,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:03:13,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:03:13,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:03:13,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:03:13,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:03:13,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:03:13,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:03:13,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 02:03:13,276 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:03:13,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:03:13,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:03:13,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:03:13,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:03:13,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:03:13,279 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:03:13,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:03:13,280 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:03:13,280 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:03:13,280 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:03:13,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:03:13,281 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:03:13,281 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:03:13,281 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:03:13,282 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:03:13,282 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:03:13,282 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:03:13,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:03:13,284 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:03:13,284 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:03:13,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:03:13,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:03:13,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:03:13,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:03:13,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:03:13,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:03:13,286 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:03:13,287 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:03:13,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:03:13,287 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:03:13,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:03:13,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:03:13,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:03:13,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:03:13,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:03:13,289 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:03:13,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:03:13,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:03:13,290 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:03:13,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:03:13,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:03:13,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:03:13,291 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_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ea6dc0bafa5a28653d9fabe4d322befcb916956980332e0149835c6371af6a1 [2022-11-03 02:03:13,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:03:13,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:03:13,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:03:13,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:03:13,709 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:03:13,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2022-11-03 02:03:13,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/data/ff78deda2/b7a581cbf2224a088d875fe08abbd827/FLAG9929f2174 [2022-11-03 02:03:14,518 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:03:14,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2022-11-03 02:03:14,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/data/ff78deda2/b7a581cbf2224a088d875fe08abbd827/FLAG9929f2174 [2022-11-03 02:03:14,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/data/ff78deda2/b7a581cbf2224a088d875fe08abbd827 [2022-11-03 02:03:14,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:03:14,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:03:14,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:03:14,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:03:14,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:03:14,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:03:14" (1/1) ... [2022-11-03 02:03:14,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8a681f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:14, skipping insertion in model container [2022-11-03 02:03:14,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:03:14" (1/1) ... [2022-11-03 02:03:14,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:03:14,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:03:15,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/sv-benchmarks/c/loop-zilu/benchmark29_linear.i[868,881] [2022-11-03 02:03:15,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:03:15,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:03:15,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/sv-benchmarks/c/loop-zilu/benchmark29_linear.i[868,881] [2022-11-03 02:03:15,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:03:15,258 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:03:15,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15 WrapperNode [2022-11-03 02:03:15,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:03:15,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:03:15,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:03:15,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:03:15,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,307 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-11-03 02:03:15,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:03:15,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:03:15,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:03:15,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:03:15,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:03:15,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:03:15,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:03:15,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:03:15,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (1/1) ... [2022-11-03 02:03:15,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:03:15,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:15,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:03:15,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:03:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:03:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:03:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:03:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:03:15,520 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:03:15,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:03:15,748 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:03:15,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:03:15,777 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:03:15,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:15 BoogieIcfgContainer [2022-11-03 02:03:15,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:03:15,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:03:15,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:03:15,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:03:15,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:03:14" (1/3) ... [2022-11-03 02:03:15,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18af94c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:15, skipping insertion in model container [2022-11-03 02:03:15,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:03:15" (2/3) ... [2022-11-03 02:03:15,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18af94c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:15, skipping insertion in model container [2022-11-03 02:03:15,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:15" (3/3) ... [2022-11-03 02:03:15,791 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark29_linear.i [2022-11-03 02:03:15,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:03:15,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-03 02:03:15,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:03:15,958 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;@30978b02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:03:15,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 02:03:15,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:15,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:03:15,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:15,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:03:15,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-03 02:03:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2022-11-03 02:03:16,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:16,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003753930] [2022-11-03 02:03:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:16,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:03:16,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:03:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:03:16,168 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:03:16,171 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:03:16,172 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-03 02:03:16,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-03 02:03:16,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-03 02:03:16,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-03 02:03:16,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:03:16,183 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:03:16,189 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:03:16,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:03:16 BoogieIcfgContainer [2022-11-03 02:03:16,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:03:16,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:03:16,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:03:16,213 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:03:16,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:15" (3/4) ... [2022-11-03 02:03:16,216 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:03:16,255 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a58f7c48-9287-4fd1-8f63-ec2287ae7cb2/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:03:16,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:03:16,257 INFO L158 Benchmark]: Toolchain (without parser) took 1351.55ms. Allocated memory is still 121.6MB. Free memory was 93.5MB in the beginning and 67.5MB in the end (delta: 26.0MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2022-11-03 02:03:16,257 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 121.6MB. Free memory was 75.3MB in the beginning and 75.3MB in the end (delta: 63.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:03:16,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.25ms. Allocated memory is still 121.6MB. Free memory was 93.1MB in the beginning and 96.0MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:03:16,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.39ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 94.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:03:16,260 INFO L158 Benchmark]: Boogie Preprocessor took 35.08ms. Allocated memory is still 121.6MB. Free memory was 94.6MB in the beginning and 93.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:03:16,260 INFO L158 Benchmark]: RCFGBuilder took 436.28ms. Allocated memory is still 121.6MB. Free memory was 93.5MB in the beginning and 83.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:03:16,261 INFO L158 Benchmark]: TraceAbstraction took 429.11ms. Allocated memory is still 121.6MB. Free memory was 82.2MB in the beginning and 69.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:03:16,262 INFO L158 Benchmark]: Witness Printer took 42.91ms. Allocated memory is still 121.6MB. Free memory was 69.0MB in the beginning and 67.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:03:16,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 121.6MB. Free memory was 75.3MB in the beginning and 75.3MB in the end (delta: 63.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.25ms. Allocated memory is still 121.6MB. Free memory was 93.1MB in the beginning and 96.0MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.39ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 94.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.08ms. Allocated memory is still 121.6MB. Free memory was 94.6MB in the beginning and 93.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 436.28ms. Allocated memory is still 121.6MB. Free memory was 93.5MB in the beginning and 83.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 429.11ms. Allocated memory is still 121.6MB. Free memory was 82.2MB in the beginning and 69.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 42.91ms. Allocated memory is still 121.6MB. Free memory was 69.0MB in the beginning and 67.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x