./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta --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 fe3c8b13f268d0f08d959b203c6650243d0aa01256dfd7d03d9b6e6990dd887b --- 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-dbf71c6-m [2022-10-17 17:13:13,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:13:13,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:13:13,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:13:13,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:13:13,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:13:13,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:13:13,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:13:13,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:13:13,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:13:13,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:13:13,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:13:13,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:13:13,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:13:13,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:13:13,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:13:13,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:13:13,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:13:13,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:13:13,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:13:13,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:13:13,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:13:13,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:13:13,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:13:13,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:13:13,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:13:13,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:13:13,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:13:13,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:13:13,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:13:13,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:13:13,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:13:13,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:13:13,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:13:13,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:13:13,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:13:13,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:13:13,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:13:13,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:13:13,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:13:13,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:13:13,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:13:13,303 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:13:13,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:13:13,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:13:13,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:13:13,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:13:13,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:13:13,306 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:13:13,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:13:13,307 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:13:13,307 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:13:13,308 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:13:13,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:13:13,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:13:13,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:13:13,309 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:13:13,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:13:13,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:13:13,310 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:13:13,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:13:13,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:13:13,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:13:13,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:13:13,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:13:13,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:13:13,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:13:13,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:13:13,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:13:13,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:13:13,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:13:13,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:13:13,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:13:13,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:13:13,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:13:13,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:13:13,317 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:13:13,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:13:13,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:13:13,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:13:13,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:13:13,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:13:13,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:13:13,318 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_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe3c8b13f268d0f08d959b203c6650243d0aa01256dfd7d03d9b6e6990dd887b [2022-10-17 17:13:13,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:13:13,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:13:13,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:13:13,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:13:13,714 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:13:13,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i [2022-10-17 17:13:13,785 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/data/d653bd6a3/8310080465bc4a1a9aaccb074065abf9/FLAG8c049059f [2022-10-17 17:13:14,278 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:13:14,279 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i [2022-10-17 17:13:14,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/data/d653bd6a3/8310080465bc4a1a9aaccb074065abf9/FLAG8c049059f [2022-10-17 17:13:14,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/data/d653bd6a3/8310080465bc4a1a9aaccb074065abf9 [2022-10-17 17:13:14,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:13:14,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:13:14,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:13:14,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:13:14,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:13:14,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569fd871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14, skipping insertion in model container [2022-10-17 17:13:14,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:13:14,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:13:14,868 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_6d487444-600c-4200-a4f1-b75309d52438/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i[873,886] [2022-10-17 17:13:14,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:13:14,889 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:13:14,903 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_6d487444-600c-4200-a4f1-b75309d52438/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i[873,886] [2022-10-17 17:13:14,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:13:14,920 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:13:14,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14 WrapperNode [2022-10-17 17:13:14,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:13:14,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:13:14,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:13:14,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:13:14,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,955 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-10-17 17:13:14,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:13:14,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:13:14,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:13:14,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:13:14,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,976 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:13:14,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:13:14,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:13:14,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:13:14,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (1/1) ... [2022-10-17 17:13:14,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:13:15,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:15,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:13:15,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:13:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:13:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:13:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:13:15,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:13:15,153 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:13:15,155 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:13:15,278 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:13:15,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:13:15,310 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:13:15,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:13:15 BoogieIcfgContainer [2022-10-17 17:13:15,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:13:15,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:13:15,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:13:15,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:13:15,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:13:14" (1/3) ... [2022-10-17 17:13:15,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a92ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:13:15, skipping insertion in model container [2022-10-17 17:13:15,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:14" (2/3) ... [2022-10-17 17:13:15,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a92ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:13:15, skipping insertion in model container [2022-10-17 17:13:15,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:13:15" (3/3) ... [2022-10-17 17:13:15,322 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark18_conjunctive.i [2022-10-17 17:13:15,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:13:15,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:13:15,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:13:15,404 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;@15f577c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:13:15,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:13:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2022-10-17 17:13:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:13:15,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:15,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:13:15,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:13:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2022-10-17 17:13:15,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:15,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139106165] [2022-10-17 17:13:15,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:15,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:15,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139106165] [2022-10-17 17:13:15,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139106165] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:13:15,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:13:15,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:13:15,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980183642] [2022-10-17 17:13:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:13:15,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:13:15,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:13:15,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:13:15,714 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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), 3 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) [2022-10-17 17:13:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:15,778 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-10-17 17:13:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:13:15,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2022-10-17 17:13:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:15,790 INFO L225 Difference]: With dead ends: 16 [2022-10-17 17:13:15,800 INFO L226 Difference]: Without dead ends: 7 [2022-10-17 17:13:15,803 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 [2022-10-17 17:13:15,814 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:15,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:13:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-10-17 17:13:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-10-17 17:13:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-10-17 17:13:15,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-10-17 17:13:15,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:15,858 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-10-17 17:13:15,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-10-17 17:13:15,859 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-10-17 17:13:15,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:13:15,859 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:15,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:13:15,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:13:15,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:13:15,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2022-10-17 17:13:15,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:15,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250408763] [2022-10-17 17:13:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:15,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:16,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:16,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250408763] [2022-10-17 17:13:16,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250408763] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:16,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161163578] [2022-10-17 17:13:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:16,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:16,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:16,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:16,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:13:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:16,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 17:13:16,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:16,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:16,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161163578] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:16,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1973905951] [2022-10-17 17:13:16,767 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-10-17 17:13:16,767 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:16,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:16,778 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:16,778 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:17,003 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:17,221 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '84#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (and (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~n~0#1|)) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:13:17,222 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:17,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:17,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-17 17:13:17,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184071418] [2022-10-17 17:13:17,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:17,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:13:17,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:17,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:13:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-10-17 17:13:17,231 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:17,320 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-10-17 17:13:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:13:17,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:13:17,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:17,321 INFO L225 Difference]: With dead ends: 9 [2022-10-17 17:13:17,321 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:13:17,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:13:17,326 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:17,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:13:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:13:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:13:17,331 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) [2022-10-17 17:13:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:13:17,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-10-17 17:13:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:17,332 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:13:17,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:13:17,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:13:17,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:13:17,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 17:13:17,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:17,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:13:17,594 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:13:17,595 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-10-17 17:13:17,595 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-10-17 17:13:17,595 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:13:17,596 INFO L902 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: true [2022-10-17 17:13:17,596 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-10-17 17:13:17,596 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (< |ULTIMATE.start_main_~k~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1)) (< |ULTIMATE.start_main_~k~0#1| (+ |ULTIMATE.start_main_~i~0#1| 1)) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~k~0#1|)) [2022-10-17 17:13:17,597 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-10-17 17:13:17,597 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2022-10-17 17:13:17,603 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:13:17,606 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:13:17,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:13:17 BoogieIcfgContainer [2022-10-17 17:13:17,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:13:17,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:13:17,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:13:17,630 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:13:17,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:13:15" (3/4) ... [2022-10-17 17:13:17,634 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:13:17,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-10-17 17:13:17,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-10-17 17:13:17,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-10-17 17:13:17,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:13:17,701 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:13:17,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:13:17,702 INFO L158 Benchmark]: Toolchain (without parser) took 3059.50ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 61.2MB in the beginning and 102.4MB in the end (delta: -41.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:13:17,702 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:13:17,702 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.21ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 72.5MB in the end (delta: -11.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:13:17,703 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.88ms. Allocated memory is still 96.5MB. Free memory was 72.5MB in the beginning and 71.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:13:17,703 INFO L158 Benchmark]: Boogie Preprocessor took 22.72ms. Allocated memory is still 96.5MB. Free memory was 71.1MB in the beginning and 69.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:13:17,704 INFO L158 Benchmark]: RCFGBuilder took 332.78ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 59.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:13:17,704 INFO L158 Benchmark]: TraceAbstraction took 2314.35ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 58.9MB in the beginning and 104.5MB in the end (delta: -45.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:13:17,705 INFO L158 Benchmark]: Witness Printer took 71.03ms. Allocated memory is still 132.1MB. Free memory was 104.5MB in the beginning and 102.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:13:17,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.21ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 72.5MB in the end (delta: -11.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.88ms. Allocated memory is still 96.5MB. Free memory was 72.5MB in the beginning and 71.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.72ms. Allocated memory is still 96.5MB. Free memory was 71.1MB in the beginning and 69.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 332.78ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 59.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2314.35ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 58.9MB in the beginning and 104.5MB in the end (delta: -45.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.03ms. Allocated memory is still 132.1MB. Free memory was 104.5MB in the beginning and 102.4MB 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: 16]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 7 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 7 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: 24]: Loop Invariant Derived loop invariant: (k < n + 1 && k < i + 1) && i <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-10-17 17:13:17,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d487444-600c-4200-a4f1-b75309d52438/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE