./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9 --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 a97cc7ecf3f325d6a4f94ad142da468f60264f8646a5f445527873ff4eb9457a --- 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-6b4ec56 [2022-11-20 20:23:46,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:23:46,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:23:46,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:23:46,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:23:46,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:23:46,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:23:46,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:23:46,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:23:46,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:23:46,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:23:46,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:23:46,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:23:46,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:23:46,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:23:46,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:23:46,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:23:46,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:23:46,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:23:46,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:23:46,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:23:46,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:23:46,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:23:46,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:23:46,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:23:46,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:23:46,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:23:46,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:23:46,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:23:46,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:23:46,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:23:46,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:23:46,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:23:46,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:23:46,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:23:46,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:23:46,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:23:46,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:23:46,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:23:46,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:23:46,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:23:46,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:23:46,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:23:46,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:23:46,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:23:46,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:23:46,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:23:46,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:23:46,337 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:23:46,337 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:23:46,337 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:23:46,338 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:23:46,338 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:23:46,338 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:23:46,338 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:23:46,339 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:23:46,339 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:23:46,339 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:23:46,339 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:23:46,339 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:23:46,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:23:46,340 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:23:46,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:23:46,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:23:46,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:23:46,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:23:46,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:23:46,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:23:46,342 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:23:46,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:23:46,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:23:46,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:23:46,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:23:46,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:23:46,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:23:46,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:23:46,344 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:23:46,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:23:46,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:23:46,344 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:23:46,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:23:46,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:23:46,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:23:46,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a97cc7ecf3f325d6a4f94ad142da468f60264f8646a5f445527873ff4eb9457a [2022-11-20 20:23:46,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:23:46,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:23:46,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:23:46,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:23:46,638 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:23:46,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2022-11-20 20:23:49,672 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:23:49,879 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:23:49,879 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2022-11-20 20:23:49,886 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/data/e3784b37c/810d0ca642b44d82acc3ced040f1860d/FLAGcf50c368b [2022-11-20 20:23:49,916 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/data/e3784b37c/810d0ca642b44d82acc3ced040f1860d [2022-11-20 20:23:49,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:23:49,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:23:49,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:23:49,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:23:49,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:23:49,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:23:49" (1/1) ... [2022-11-20 20:23:49,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e33db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:49, skipping insertion in model container [2022-11-20 20:23:49,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:23:49" (1/1) ... [2022-11-20 20:23:49,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:23:49,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:23:50,133 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_6deba692-018f-4e0d-9520-dc76b1ee0fb6/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i[873,886] [2022-11-20 20:23:50,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:23:50,153 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:23:50,162 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_6deba692-018f-4e0d-9520-dc76b1ee0fb6/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i[873,886] [2022-11-20 20:23:50,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:23:50,178 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:23:50,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50 WrapperNode [2022-11-20 20:23:50,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:23:50,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:23:50,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:23:50,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:23:50,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,209 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-11-20 20:23:50,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:23:50,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:23:50,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:23:50,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:23:50,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:23:50,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:23:50,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:23:50,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:23:50,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (1/1) ... [2022-11-20 20:23:50,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:23:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:23:50,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:23:50,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:23:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:23:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:23:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:23:50,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:23:50,387 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:23:50,389 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:23:50,488 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:23:50,508 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:23:50,508 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:23:50,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:23:50 BoogieIcfgContainer [2022-11-20 20:23:50,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:23:50,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:23:50,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:23:50,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:23:50,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:23:49" (1/3) ... [2022-11-20 20:23:50,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1437d33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:23:50, skipping insertion in model container [2022-11-20 20:23:50,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:50" (2/3) ... [2022-11-20 20:23:50,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1437d33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:23:50, skipping insertion in model container [2022-11-20 20:23:50,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:23:50" (3/3) ... [2022-11-20 20:23:50,520 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.i [2022-11-20 20:23:50,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:23:50,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:23:50,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:23:50,637 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;@7c5b8b3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:23:50,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:23:50,640 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) [2022-11-20 20:23:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 20:23:50,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:50,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 20:23:50,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:23:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2022-11-20 20:23:50,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:50,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609940709] [2022-11-20 20:23:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:50,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:50,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609940709] [2022-11-20 20:23:50,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609940709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:50,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:50,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:23:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810311622] [2022-11-20 20:23:50,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:50,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:23:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:23:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:23:51,039 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:23:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:51,142 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-20 20:23:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:23:51,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 20:23:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:51,151 INFO L225 Difference]: With dead ends: 21 [2022-11-20 20:23:51,152 INFO L226 Difference]: Without dead ends: 7 [2022-11-20 20:23:51,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:23:51,157 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:51,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:23:51,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-20 20:23:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-20 20:23:51,187 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) [2022-11-20 20:23:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-20 20:23:51,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-11-20 20:23:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:51,189 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-20 20:23:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:23:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-20 20:23:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:23:51,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:51,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 20:23:51,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:23:51,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:23:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:51,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2022-11-20 20:23:51,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:51,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751896139] [2022-11-20 20:23:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:51,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:51,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:51,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751896139] [2022-11-20 20:23:51,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751896139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:23:51,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194524145] [2022-11-20 20:23:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:51,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:23:51,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:23:51,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:23:51,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:23:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:51,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:23:51,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:23:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:51,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:23:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:51,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194524145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:23:51,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1042890505] [2022-11-20 20:23:51,520 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-20 20:23:51,520 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:23:51,524 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:23:51,530 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:23:51,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:23:51,707 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:23:51,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1042890505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:51,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:23:51,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 10 [2022-11-20 20:23:51,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176830169] [2022-11-20 20:23:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:23:51,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:23:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:23:51,933 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-20 20:23:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:52,051 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2022-11-20 20:23:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:23:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) Word has length 6 [2022-11-20 20:23:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:52,052 INFO L225 Difference]: With dead ends: 7 [2022-11-20 20:23:52,052 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:23:52,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:23:52,054 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:52,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:23:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:23:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:23:52,056 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) [2022-11-20 20:23:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:23:52,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-11-20 20:23:52,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:52,057 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:23:52,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-20 20:23:52,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:23:52,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:23:52,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:23:52,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:23:52,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 20:23:52,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:23:52,320 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:23:52,320 INFO L902 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2022-11-20 20:23:52,320 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-11-20 20:23:52,321 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-11-20 20:23:52,321 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:23:52,321 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-11-20 20:23:52,322 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 100) (<= 0 |ULTIMATE.start_main_~sum~0#1|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-20 20:23:52,322 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-11-20 20:23:52,322 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2022-11-20 20:23:52,325 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 20:23:52,329 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:23:52,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:23:52 BoogieIcfgContainer [2022-11-20 20:23:52,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:23:52,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:23:52,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:23:52,365 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:23:52,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:23:50" (3/4) ... [2022-11-20 20:23:52,369 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:23:52,380 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-20 20:23:52,380 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 20:23:52,380 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:23:52,380 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:23:52,414 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:23:52,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:23:52,415 INFO L158 Benchmark]: Toolchain (without parser) took 2490.59ms. Allocated memory was 132.1MB in the beginning and 176.2MB in the end (delta: 44.0MB). Free memory was 67.5MB in the beginning and 60.3MB in the end (delta: 7.2MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2022-11-20 20:23:52,416 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 132.1MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:23:52,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.95ms. Allocated memory was 132.1MB in the beginning and 176.2MB in the end (delta: 44.0MB). Free memory was 67.2MB in the beginning and 143.3MB in the end (delta: -76.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-11-20 20:23:52,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.63ms. Allocated memory is still 176.2MB. Free memory was 143.3MB in the beginning and 142.3MB in the end (delta: 972.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:23:52,417 INFO L158 Benchmark]: Boogie Preprocessor took 19.39ms. Allocated memory is still 176.2MB. Free memory was 142.3MB in the beginning and 141.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:23:52,418 INFO L158 Benchmark]: RCFGBuilder took 280.92ms. Allocated memory is still 176.2MB. Free memory was 141.2MB in the beginning and 129.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:23:52,418 INFO L158 Benchmark]: TraceAbstraction took 1849.92ms. Allocated memory is still 176.2MB. Free memory was 129.6MB in the beginning and 62.4MB in the end (delta: 67.2MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2022-11-20 20:23:52,418 INFO L158 Benchmark]: Witness Printer took 50.24ms. Allocated memory is still 176.2MB. Free memory was 62.4MB in the beginning and 60.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:23:52,421 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 132.1MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.95ms. Allocated memory was 132.1MB in the beginning and 176.2MB in the end (delta: 44.0MB). Free memory was 67.2MB in the beginning and 143.3MB in the end (delta: -76.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.63ms. Allocated memory is still 176.2MB. Free memory was 143.3MB in the beginning and 142.3MB in the end (delta: 972.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.39ms. Allocated memory is still 176.2MB. Free memory was 142.3MB in the beginning and 141.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 280.92ms. Allocated memory is still 176.2MB. Free memory was 141.2MB in the beginning and 129.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1849.92ms. Allocated memory is still 176.2MB. Free memory was 129.6MB in the beginning and 62.4MB in the end (delta: 67.2MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * Witness Printer took 50.24ms. Allocated memory is still 176.2MB. Free memory was 62.4MB in the beginning and 60.3MB 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: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 6 NumberOfFragments, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 68 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 4 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 9 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: OVERALL_TIME: 0.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 7, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 7, TOOLS_QUANTIFIERELIM_TIME: 0.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 19, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 33, DAG_COMPRESSION_RETAINED_NODES: 18, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((n <= 100 && 0 <= sum) && #NULL <= 0) && 0 <= i) && 0 <= #NULL) && 0 <= n) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 20:23:52,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6deba692-018f-4e0d-9520-dc76b1ee0fb6/bin/utaipan-6cKwYrpEi9/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