./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_2-1_abstracted.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_2-1_abstracted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh --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 34e19e65adf4a23bba9764eb43ac93a7b7093535b62c86432228778ce05d2a5b --- 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-2329fc7 [2022-12-14 05:41:01,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:41:01,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:41:01,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:41:01,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:41:01,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:41:01,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:41:01,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:41:01,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:41:01,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:41:01,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:41:01,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:41:01,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:41:01,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:41:01,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:41:01,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:41:01,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:41:01,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:41:01,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:41:01,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:41:01,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:41:01,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:41:01,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:41:01,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:41:01,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:41:01,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:41:01,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:41:01,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:41:01,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:41:01,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:41:01,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:41:01,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:41:01,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:41:01,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:41:01,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:41:01,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:41:01,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:41:01,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:41:01,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:41:01,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:41:01,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:41:01,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:41:01,331 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:41:01,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:41:01,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:41:01,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:41:01,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:41:01,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:41:01,332 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:41:01,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:41:01,333 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:41:01,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:41:01,333 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:41:01,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:41:01,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:41:01,334 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:41:01,334 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:41:01,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:41:01,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:41:01,334 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:41:01,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:41:01,335 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:41:01,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:41:01,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:41:01,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:41:01,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:41:01,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:41:01,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:41:01,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:41:01,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:41:01,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:41:01,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:41:01,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:41:01,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:41:01,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:41:01,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:41:01,338 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:41:01,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:41:01,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:41:01,338 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:41:01,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:41:01,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:41:01,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:41:01,338 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_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34e19e65adf4a23bba9764eb43ac93a7b7093535b62c86432228778ce05d2a5b [2022-12-14 05:41:01,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:41:01,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:41:01,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:41:01,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:41:01,545 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:41:01,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-acceleration/simple_2-1_abstracted.c [2022-12-14 05:41:04,083 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:41:04,228 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:41:04,229 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/sv-benchmarks/c/loop-acceleration/simple_2-1_abstracted.c [2022-12-14 05:41:04,233 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/data/52c8aa205/2d630b5943dd42df84728cce168a9ba9/FLAG9c87bd741 [2022-12-14 05:41:04,659 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/data/52c8aa205/2d630b5943dd42df84728cce168a9ba9 [2022-12-14 05:41:04,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:41:04,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:41:04,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:41:04,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:41:04,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:41:04,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd6e955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04, skipping insertion in model container [2022-12-14 05:41:04,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:41:04,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:41:04,777 WARN L237 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_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/sv-benchmarks/c/loop-acceleration/simple_2-1_abstracted.c[790,803] [2022-12-14 05:41:04,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:41:04,791 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:41:04,800 WARN L237 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_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/sv-benchmarks/c/loop-acceleration/simple_2-1_abstracted.c[790,803] [2022-12-14 05:41:04,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:41:04,811 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:41:04,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04 WrapperNode [2022-12-14 05:41:04,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:41:04,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:41:04,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:41:04,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:41:04,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,832 INFO L138 Inliner]: procedures = 20, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2022-12-14 05:41:04,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:41:04,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:41:04,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:41:04,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:41:04,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,843 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:41:04,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:41:04,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:41:04,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:41:04,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (1/1) ... [2022-12-14 05:41:04,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:41:04,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:41:04,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:41:04,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:41:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:41:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:41:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:41:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:41:04,959 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:41:04,961 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:41:05,018 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:41:05,048 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:41:05,048 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:41:05,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:41:05 BoogieIcfgContainer [2022-12-14 05:41:05,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:41:05,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:41:05,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:41:05,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:41:05,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:41:04" (1/3) ... [2022-12-14 05:41:05,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23705b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:41:05, skipping insertion in model container [2022-12-14 05:41:05,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:04" (2/3) ... [2022-12-14 05:41:05,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23705b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:41:05, skipping insertion in model container [2022-12-14 05:41:05,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:41:05" (3/3) ... [2022-12-14 05:41:05,059 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_2-1_abstracted.c [2022-12-14 05:41:05,078 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:41:05,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:41:05,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:41:05,122 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;@3ab32d0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:41:05,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:41:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-12-14 05:41:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 05:41:05,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:41:05,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 05:41:05,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:41:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:41:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash 65926, now seen corresponding path program 1 times [2022-12-14 05:41:05,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:41:05,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350473907] [2022-12-14 05:41:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:41:05,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:41:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:41:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:41:05,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:41:05,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350473907] [2022-12-14 05:41:05,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350473907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:41:05,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:41:05,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:41:05,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096894452] [2022-12-14 05:41:05,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:41:05,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:41:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:41:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:41:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:41:05,381 INFO L87 Difference]: Start difference. First operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 05:41:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:41:05,399 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-12-14 05:41:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:41:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 05:41:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:41:05,404 INFO L225 Difference]: With dead ends: 8 [2022-12-14 05:41:05,405 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 05:41:05,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:41:05,408 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:41:05,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:41:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 05:41:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 05:41:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:41:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 05:41:05,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2022-12-14 05:41:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:41:05,427 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 05:41:05,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 05:41:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 05:41:05,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 05:41:05,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 05:41:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:41:05,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 05:41:05,436 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 05:41:05,436 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2022-12-14 05:41:05,437 INFO L895 garLoopResultBuilder]: At program point L17-2(lines 16 21) the Hoare annotation is: (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) [2022-12-14 05:41:05,437 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 05:41:05,437 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2022-12-14 05:41:05,437 INFO L899 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2022-12-14 05:41:05,440 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 05:41:05,442 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:41:05,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:41:05 BoogieIcfgContainer [2022-12-14 05:41:05,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:41:05,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:41:05,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:41:05,453 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:41:05,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:41:05" (3/4) ... [2022-12-14 05:41:05,455 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 05:41:05,462 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-14 05:41:05,462 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 05:41:05,462 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 05:41:05,462 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 05:41:05,484 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 05:41:05,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:41:05,485 INFO L158 Benchmark]: Toolchain (without parser) took 822.79ms. Allocated memory is still 121.6MB. Free memory was 88.6MB in the beginning and 77.9MB in the end (delta: 10.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-12-14 05:41:05,485 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:41:05,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.19ms. Allocated memory is still 121.6MB. Free memory was 88.6MB in the beginning and 78.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:41:05,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.90ms. Allocated memory is still 121.6MB. Free memory was 78.5MB in the beginning and 77.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:41:05,486 INFO L158 Benchmark]: Boogie Preprocessor took 11.23ms. Allocated memory is still 121.6MB. Free memory was 77.0MB in the beginning and 76.1MB in the end (delta: 832.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:41:05,486 INFO L158 Benchmark]: RCFGBuilder took 206.12ms. Allocated memory is still 121.6MB. Free memory was 76.1MB in the beginning and 65.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 05:41:05,487 INFO L158 Benchmark]: TraceAbstraction took 398.99ms. Allocated memory is still 121.6MB. Free memory was 65.0MB in the beginning and 80.0MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:41:05,487 INFO L158 Benchmark]: Witness Printer took 32.01ms. Allocated memory is still 121.6MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:41:05,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.19ms. Allocated memory is still 121.6MB. Free memory was 88.6MB in the beginning and 78.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.90ms. Allocated memory is still 121.6MB. Free memory was 78.5MB in the beginning and 77.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.23ms. Allocated memory is still 121.6MB. Free memory was 77.0MB in the beginning and 76.1MB in the end (delta: 832.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 206.12ms. Allocated memory is still 121.6MB. Free memory was 76.1MB in the beginning and 65.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 398.99ms. Allocated memory is still 121.6MB. Free memory was 65.0MB in the beginning and 80.0MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 32.01ms. Allocated memory is still 121.6MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.1MB). 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 4 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-12-14 05:41:05,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c5d82-93d6-4f73-9ba8-8b3ac5cff041/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE