./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI --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 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:40:41,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:40:41,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:40:41,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:40:41,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:40:41,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:40:41,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:40:41,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:40:41,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:40:41,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:40:41,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:40:41,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:40:41,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:40:41,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:40:41,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:40:41,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:40:41,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:40:41,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:40:41,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:40:41,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:40:41,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:40:41,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:40:41,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:40:41,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:40:41,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:40:41,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:40:41,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:40:41,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:40:41,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:40:41,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:40:41,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:40:41,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:40:41,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:40:41,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:40:41,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:40:41,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:40:41,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:40:41,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:40:41,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:40:41,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:40:41,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:40:41,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:40:41,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:40:41,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:40:41,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:40:41,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:40:41,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:40:41,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:40:41,332 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:40:41,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:40:41,332 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:40:41,332 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:40:41,333 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:40:41,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:40:41,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:40:41,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:40:41,333 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:40:41,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:40:41,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:40:41,334 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:40:41,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:40:41,335 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:40:41,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:40:41,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:40:41,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:40:41,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:40:41,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:40:41,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:40:41,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:40:41,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:40:41,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:40:41,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:40:41,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:40:41,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:40:41,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:40:41,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:40:41,338 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:40:41,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:40:41,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:40:41,338 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:40:41,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:40:41,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:40:41,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:40:41,339 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_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc [2022-11-03 01:40:41,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:40:41,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:40:41,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:40:41,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:40:41,627 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:40:41,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2022-11-03 01:40:41,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/data/4b018830d/aae0c0ee924c48ec9c631b03537e813b/FLAGd01243e10 [2022-11-03 01:40:42,199 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:40:42,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2022-11-03 01:40:42,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/data/4b018830d/aae0c0ee924c48ec9c631b03537e813b/FLAGd01243e10 [2022-11-03 01:40:42,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/data/4b018830d/aae0c0ee924c48ec9c631b03537e813b [2022-11-03 01:40:42,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:40:42,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:40:42,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:40:42,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:40:42,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:40:42,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:40:42" (1/1) ... [2022-11-03 01:40:42,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf4795f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:42, skipping insertion in model container [2022-11-03 01:40:42,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:40:42" (1/1) ... [2022-11-03 01:40:42,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:40:42,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:40:43,007 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_628879fb-5556-4a87-851f-f51426c457df/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i[31164,31177] [2022-11-03 01:40:43,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:40:43,033 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:40:43,097 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_628879fb-5556-4a87-851f-f51426c457df/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i[31164,31177] [2022-11-03 01:40:43,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:40:43,134 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:40:43,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43 WrapperNode [2022-11-03 01:40:43,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:40:43,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:40:43,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:40:43,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:40:43,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,216 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2022-11-03 01:40:43,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:40:43,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:40:43,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:40:43,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:40:43,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:40:43,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:40:43,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:40:43,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:40:43,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (1/1) ... [2022-11-03 01:40:43,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:40:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:40:43,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:40:43,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_628879fb-5556-4a87-851f-f51426c457df/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-03 01:40:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-03 01:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:40:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:40:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:40:43,366 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 01:40:43,513 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:40:43,515 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:40:43,940 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:40:44,099 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:40:44,099 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 01:40:44,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:40:44 BoogieIcfgContainer [2022-11-03 01:40:44,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:40:44,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:40:44,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:40:44,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:40:44,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:40:42" (1/3) ... [2022-11-03 01:40:44,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718ad24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:40:44, skipping insertion in model container [2022-11-03 01:40:44,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:43" (2/3) ... [2022-11-03 01:40:44,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718ad24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:40:44, skipping insertion in model container [2022-11-03 01:40:44,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:40:44" (3/3) ... [2022-11-03 01:40:44,111 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-2.i [2022-11-03 01:40:44,131 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:40:44,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:40:44,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:40:44,141 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:40:44,206 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 01:40:44,238 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:40:44,251 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 124 transitions, 253 flow [2022-11-03 01:40:44,254 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 124 transitions, 253 flow [2022-11-03 01:40:44,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 124 transitions, 253 flow [2022-11-03 01:40:44,307 INFO L130 PetriNetUnfolder]: 11/135 cut-off events. [2022-11-03 01:40:44,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-03 01:40:44,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 11/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-11-03 01:40:44,313 INFO L118 LiptonReduction]: Number of co-enabled transitions 2352 [2022-11-03 01:40:50,931 INFO L133 LiptonReduction]: Checked pairs total: 2688 [2022-11-03 01:40:50,932 INFO L135 LiptonReduction]: Total number of compositions: 118 [2022-11-03 01:40:50,946 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 26 transitions, 57 flow [2022-11-03 01:40:50,977 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 72 states, 69 states have (on average 2.260869565217391) internal successors, (156), 71 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:51,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:40:51,015 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;@3ebdca1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:40:51,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 01:40:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 69 states have (on average 2.260869565217391) internal successors, (156), 71 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:40:51,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:40:51,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:51,047 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-03 01:40:51,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:51,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1814493842, now seen corresponding path program 1 times [2022-11-03 01:40:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:51,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142299142] [2022-11-03 01:40:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:40:51,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:40:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:40:51,271 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:40:51,273 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:40:51,275 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-11-03 01:40:51,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-03 01:40:51,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-03 01:40:51,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:40:51,280 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 01:40:51,282 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 01:40:51,283 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 01:40:51,342 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 01:40:51,346 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:40:51,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 209 transitions, 430 flow [2022-11-03 01:40:51,346 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 209 transitions, 430 flow [2022-11-03 01:40:51,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 209 transitions, 430 flow [2022-11-03 01:40:51,407 INFO L130 PetriNetUnfolder]: 21/233 cut-off events. [2022-11-03 01:40:51,407 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 01:40:51,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 21/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 469 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2022-11-03 01:40:51,422 INFO L118 LiptonReduction]: Number of co-enabled transitions 18984 [2022-11-03 01:41:05,734 INFO L133 LiptonReduction]: Checked pairs total: 28649 [2022-11-03 01:41:05,734 INFO L135 LiptonReduction]: Total number of compositions: 180 [2022-11-03 01:41:05,735 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 65 transitions, 142 flow [2022-11-03 01:41:05,886 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3152 states, 3144 states have (on average 3.332379134860051) internal successors, (10477), 3151 states have internal predecessors, (10477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:05,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:41:05,889 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;@3ebdca1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:41:05,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 01:41:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 3152 states, 3144 states have (on average 3.332379134860051) internal successors, (10477), 3151 states have internal predecessors, (10477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:41:05,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:05,904 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-03 01:41:05,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:41:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:05,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1458231512, now seen corresponding path program 1 times [2022-11-03 01:41:05,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:05,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530587096] [2022-11-03 01:41:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:05,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:41:05,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:41:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:41:05,950 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:41:05,950 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:41:05,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-03 01:41:05,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-03 01:41:05,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-11-03 01:41:05,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-03 01:41:05,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:41:05,952 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 01:41:05,953 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 01:41:05,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-03 01:41:06,008 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 01:41:06,011 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:41:06,011 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 294 transitions, 609 flow [2022-11-03 01:41:06,012 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 294 transitions, 609 flow [2022-11-03 01:41:06,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 294 transitions, 609 flow [2022-11-03 01:41:06,114 INFO L130 PetriNetUnfolder]: 31/331 cut-off events. [2022-11-03 01:41:06,114 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-03 01:41:06,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 331 events. 31/331 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 917 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-11-03 01:41:06,144 INFO L118 LiptonReduction]: Number of co-enabled transitions 49896 [2022-11-03 01:41:30,640 INFO L133 LiptonReduction]: Checked pairs total: 87956 [2022-11-03 01:41:30,641 INFO L135 LiptonReduction]: Total number of compositions: 258 [2022-11-03 01:41:30,642 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 94 transitions, 209 flow [2022-11-03 01:41:33,841 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 69322 states, 69303 states have (on average 4.598790817136344) internal successors, (318710), 69321 states have internal predecessors, (318710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:33,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:41:33,843 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;@3ebdca1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:41:33,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-03 01:41:33,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 69322 states, 69303 states have (on average 4.598790817136344) internal successors, (318710), 69321 states have internal predecessors, (318710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:41:33,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:33,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:33,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 01:41:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:33,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1886041357, now seen corresponding path program 1 times [2022-11-03 01:41:33,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:33,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988385743] [2022-11-03 01:41:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:33,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:41:34,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:34,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988385743] [2022-11-03 01:41:34,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988385743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:34,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:34,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:41:34,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327338514] [2022-11-03 01:41:34,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:34,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:34,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:34,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:34,454 INFO L87 Difference]: Start difference. First operand has 69322 states, 69303 states have (on average 4.598790817136344) internal successors, (318710), 69321 states have internal predecessors, (318710), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:36,855 INFO L93 Difference]: Finished difference Result 71635 states and 304979 transitions. [2022-11-03 01:41:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-11-03 01:41:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:38,289 INFO L225 Difference]: With dead ends: 71635 [2022-11-03 01:41:38,289 INFO L226 Difference]: Without dead ends: 71635 [2022-11-03 01:41:38,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:38,293 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:38,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 29 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:41:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71635 states. [2022-11-03 01:41:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71635 to 59467. [2022-11-03 01:41:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59467 states, 59457 states have (on average 4.288191466101552) internal successors, (254963), 59466 states have internal predecessors, (254963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59467 states to 59467 states and 254963 transitions. [2022-11-03 01:41:42,184 INFO L78 Accepts]: Start accepts. Automaton has 59467 states and 254963 transitions. Word has length 12 [2022-11-03 01:41:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:42,186 INFO L495 AbstractCegarLoop]: Abstraction has 59467 states and 254963 transitions. [2022-11-03 01:41:42,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 59467 states and 254963 transitions. [2022-11-03 01:41:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:41:42,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:42,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:42,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:41:42,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 01:41:42,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:42,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1182799573, now seen corresponding path program 1 times [2022-11-03 01:41:42,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:42,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52393920] [2022-11-03 01:41:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:42,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:41:42,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:42,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52393920] [2022-11-03 01:41:42,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52393920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:42,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:42,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:41:42,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808693816] [2022-11-03 01:41:42,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:42,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:42,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:42,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:42,361 INFO L87 Difference]: Start difference. First operand 59467 states and 254963 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:43,958 INFO L93 Difference]: Finished difference Result 70441 states and 298145 transitions. [2022-11-03 01:41:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:43,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-11-03 01:41:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:44,966 INFO L225 Difference]: With dead ends: 70441 [2022-11-03 01:41:44,973 INFO L226 Difference]: Without dead ends: 70441 [2022-11-03 01:41:44,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:44,982 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 37 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:44,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 18 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:41:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70441 states. [2022-11-03 01:41:47,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70441 to 70301. [2022-11-03 01:41:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70301 states, 70283 states have (on average 4.236486774895779) internal successors, (297753), 70300 states have internal predecessors, (297753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70301 states to 70301 states and 297753 transitions. [2022-11-03 01:41:47,821 INFO L78 Accepts]: Start accepts. Automaton has 70301 states and 297753 transitions. Word has length 14 [2022-11-03 01:41:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:47,821 INFO L495 AbstractCegarLoop]: Abstraction has 70301 states and 297753 transitions. [2022-11-03 01:41:47,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:41:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 70301 states and 297753 transitions. [2022-11-03 01:41:47,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:41:47,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:47,824 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-03 01:41:47,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:41:47,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-03 01:41:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 297675138, now seen corresponding path program 1 times [2022-11-03 01:41:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:47,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471528871] [2022-11-03 01:41:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:41:47,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:41:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:41:47,897 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:41:47,897 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:41:47,897 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-03 01:41:47,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-03 01:41:47,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-03 01:41:47,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-03 01:41:47,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-03 01:41:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:41:47,899 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 01:41:47,901 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 01:41:47,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-03 01:41:47,975 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 01:41:47,982 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:41:47,983 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 379 transitions, 790 flow [2022-11-03 01:41:47,988 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 379 transitions, 790 flow [2022-11-03 01:41:47,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 379 transitions, 790 flow [2022-11-03 01:41:48,739 INFO L130 PetriNetUnfolder]: 41/429 cut-off events. [2022-11-03 01:41:48,747 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-03 01:41:48,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 429 events. 41/429 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1435 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2022-11-03 01:41:48,797 INFO L118 LiptonReduction]: Number of co-enabled transitions 95088 [2022-11-03 01:42:22,444 INFO L133 LiptonReduction]: Checked pairs total: 170953 [2022-11-03 01:42:22,444 INFO L135 LiptonReduction]: Total number of compositions: 329 [2022-11-03 01:42:22,445 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 105 places, 124 transitions, 280 flow