./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 e04fb08f 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_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/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_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0 --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-e04fb08 [2022-11-16 19:33:35,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:33:35,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:33:35,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:33:35,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:33:35,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:33:35,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:33:35,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:33:35,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:33:35,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:33:35,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:33:35,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:33:35,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:33:35,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:33:35,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:33:35,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:33:35,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:33:36,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:33:36,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:33:36,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:33:36,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:33:36,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:33:36,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:33:36,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:33:36,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:33:36,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:33:36,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:33:36,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:33:36,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:33:36,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:33:36,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:33:36,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:33:36,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:33:36,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:33:36,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:33:36,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:33:36,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:33:36,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:33:36,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:33:36,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:33:36,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:33:36,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:33:36,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:33:36,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:33:36,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:33:36,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:33:36,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:33:36,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:33:36,072 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:33:36,073 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:33:36,073 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:33:36,073 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:33:36,074 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:33:36,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:33:36,075 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:33:36,075 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:33:36,075 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:33:36,075 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:33:36,075 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:33:36,076 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:33:36,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:33:36,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:33:36,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:33:36,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:33:36,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:33:36,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:33:36,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:33:36,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:33:36,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:33:36,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:33:36,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:33:36,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:33:36,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:33:36,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:33:36,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:33:36,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:33:36,081 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:33:36,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:33:36,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:33:36,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:33:36,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:33:36,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:33:36,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:33:36,083 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_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc [2022-11-16 19:33:36,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:33:36,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:33:36,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:33:36,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:33:36,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:33:36,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2022-11-16 19:33:36,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/data/14b8ab68a/e838c7ab58034600992a5b4fe041a49b/FLAGbf964eb24 [2022-11-16 19:33:37,045 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:33:37,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2022-11-16 19:33:37,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/data/14b8ab68a/e838c7ab58034600992a5b4fe041a49b/FLAGbf964eb24 [2022-11-16 19:33:37,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/data/14b8ab68a/e838c7ab58034600992a5b4fe041a49b [2022-11-16 19:33:37,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:33:37,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:33:37,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:33:37,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:33:37,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:33:37,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:37,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525d3cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37, skipping insertion in model container [2022-11-16 19:33:37,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:37,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:33:37,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:33:37,840 WARN L229 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_17b91956-1c10-4bbc-af4e-caab49910029/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i[31164,31177] [2022-11-16 19:33:37,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:33:37,874 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:33:37,941 WARN L229 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_17b91956-1c10-4bbc-af4e-caab49910029/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i[31164,31177] [2022-11-16 19:33:37,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:33:37,995 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:33:37,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37 WrapperNode [2022-11-16 19:33:37,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:33:37,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:33:37,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:33:37,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:33:38,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,082 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2022-11-16 19:33:38,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:33:38,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:33:38,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:33:38,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:33:38,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,113 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:33:38,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:33:38,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:33:38,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:33:38,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (1/1) ... [2022-11-16 19:33:38,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:33:38,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:33:38,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:33:38,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17b91956-1c10-4bbc-af4e-caab49910029/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:33:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:33:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 19:33:38,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 19:33:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:33:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:33:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:33:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:33:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:33:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:33:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:33:38,216 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 19:33:38,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:33:38,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:33:38,803 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:33:39,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:33:39,018 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 19:33:39,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:33:39 BoogieIcfgContainer [2022-11-16 19:33:39,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:33:39,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:33:39,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:33:39,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:33:39,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:33:37" (1/3) ... [2022-11-16 19:33:39,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c50a650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:33:39, skipping insertion in model container [2022-11-16 19:33:39,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:37" (2/3) ... [2022-11-16 19:33:39,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c50a650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:33:39, skipping insertion in model container [2022-11-16 19:33:39,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:33:39" (3/3) ... [2022-11-16 19:33:39,032 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-2.i [2022-11-16 19:33:39,044 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 19:33:39,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:33:39,055 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:33:39,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 19:33:39,182 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 19:33:39,227 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:33:39,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 124 transitions, 253 flow [2022-11-16 19:33:39,251 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 124 transitions, 253 flow [2022-11-16 19:33:39,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 124 transitions, 253 flow [2022-11-16 19:33:39,344 INFO L130 PetriNetUnfolder]: 11/135 cut-off events. [2022-11-16 19:33:39,344 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 19:33:39,353 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 141 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. [2022-11-16 19:33:39,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 2352 [2022-11-16 19:33:45,538 INFO L134 LiptonReduction]: Checked pairs total: 2442 [2022-11-16 19:33:45,538 INFO L136 LiptonReduction]: Total number of compositions: 116 [2022-11-16 19:33:45,546 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 26 transitions, 57 flow [2022-11-16 19:33:45,563 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) [2022-11-16 19:33:45,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:33:45,587 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;@336e59f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:33:45,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 19:33:45,589 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) [2022-11-16 19:33:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:33:45,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:33:45,595 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-16 19:33:45,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:33:45,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:33:45,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1868935360, now seen corresponding path program 1 times [2022-11-16 19:33:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:33:45,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163217562] [2022-11-16 19:33:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:33:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:33:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:33:45,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:33:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:33:45,783 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:33:45,785 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:33:45,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-11-16 19:33:45,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-16 19:33:45,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-16 19:33:45,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:33:45,791 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 19:33:45,794 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 19:33:45,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 19:33:45,852 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 19:33:45,861 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:33:45,862 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 209 transitions, 430 flow [2022-11-16 19:33:45,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 209 transitions, 430 flow [2022-11-16 19:33:45,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 209 transitions, 430 flow [2022-11-16 19:33:45,956 INFO L130 PetriNetUnfolder]: 21/233 cut-off events. [2022-11-16 19:33:45,956 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 19:33:45,962 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 465 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. [2022-11-16 19:33:45,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 18984 [2022-11-16 19:34:01,266 INFO L134 LiptonReduction]: Checked pairs total: 32256 [2022-11-16 19:34:01,266 INFO L136 LiptonReduction]: Total number of compositions: 182 [2022-11-16 19:34:01,268 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 64 transitions, 140 flow [2022-11-16 19:34:01,428 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3015 states, 3007 states have (on average 3.344529431326904) internal successors, (10057), 3014 states have internal predecessors, (10057), 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) [2022-11-16 19:34:01,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:34:01,441 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;@336e59f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:34:01,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 19:34:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 3015 states, 3007 states have (on average 3.344529431326904) internal successors, (10057), 3014 states have internal predecessors, (10057), 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) [2022-11-16 19:34:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:34:01,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:01,457 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 19:34:01,458 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)] === [2022-11-16 19:34:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1083653340, now seen corresponding path program 1 times [2022-11-16 19:34:01,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:01,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060048656] [2022-11-16 19:34:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:34:01,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:34:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:34:01,512 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:34:01,513 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:34:01,513 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-16 19:34:01,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-16 19:34:01,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-11-16 19:34:01,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-16 19:34:01,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:34:01,514 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 19:34:01,515 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 19:34:01,515 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 19:34:01,571 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 19:34:01,574 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:34:01,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 294 transitions, 609 flow [2022-11-16 19:34:01,575 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 294 transitions, 609 flow [2022-11-16 19:34:01,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 294 transitions, 609 flow [2022-11-16 19:34:01,644 INFO L130 PetriNetUnfolder]: 31/331 cut-off events. [2022-11-16 19:34:01,644 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 19:34:01,651 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 913 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. [2022-11-16 19:34:01,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2022-11-16 19:34:26,904 INFO L134 LiptonReduction]: Checked pairs total: 87562 [2022-11-16 19:34:26,904 INFO L136 LiptonReduction]: Total number of compositions: 257 [2022-11-16 19:34:26,905 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 95 transitions, 211 flow [2022-11-16 19:34:30,199 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 72588 states, 72569 states have (on average 4.584781380479268) internal successors, (332713), 72587 states have internal predecessors, (332713), 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) [2022-11-16 19:34:30,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:34:30,210 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;@336e59f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:34:30,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 19:34:30,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 72588 states, 72569 states have (on average 4.584781380479268) internal successors, (332713), 72587 states have internal predecessors, (332713), 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) [2022-11-16 19:34:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 19:34:30,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:30,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:34:30,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 19:34:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1460460290, now seen corresponding path program 1 times [2022-11-16 19:34:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:30,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382181988] [2022-11-16 19:34:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:30,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:34:30,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:34:30,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382181988] [2022-11-16 19:34:30,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382181988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:34:30,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:34:30,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:34:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696891013] [2022-11-16 19:34:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:34:30,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:34:30,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:34:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:34:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:34:30,952 INFO L87 Difference]: Start difference. First operand has 72588 states, 72569 states have (on average 4.584781380479268) internal successors, (332713), 72587 states have internal predecessors, (332713), 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 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:34:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:33,657 INFO L93 Difference]: Finished difference Result 80605 states and 339003 transitions. [2022-11-16 19:34:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:34:33,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 19:34:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:35,359 INFO L225 Difference]: With dead ends: 80605 [2022-11-16 19:34:35,359 INFO L226 Difference]: Without dead ends: 80605 [2022-11-16 19:34:35,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:34:35,363 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 201 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:34:35,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 63 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 19:34:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80605 states. [2022-11-16 19:34:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80605 to 67695. [2022-11-16 19:34:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67695 states, 67681 states have (on average 4.228291544155671) internal successors, (286175), 67694 states have internal predecessors, (286175), 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) [2022-11-16 19:34:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67695 states to 67695 states and 286175 transitions. [2022-11-16 19:34:39,546 INFO L78 Accepts]: Start accepts. Automaton has 67695 states and 286175 transitions. Word has length 13 [2022-11-16 19:34:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:39,547 INFO L495 AbstractCegarLoop]: Abstraction has 67695 states and 286175 transitions. [2022-11-16 19:34:39,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:34:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 67695 states and 286175 transitions. [2022-11-16 19:34:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 19:34:39,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:39,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:34:39,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:34:39,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 19:34:39,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1076691041, now seen corresponding path program 1 times [2022-11-16 19:34:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:39,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119897829] [2022-11-16 19:34:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:39,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:34:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:34:39,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:34:39,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119897829] [2022-11-16 19:34:39,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119897829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:34:39,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:34:39,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:34:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429155115] [2022-11-16 19:34:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:34:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:34:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:34:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:34:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:34:39,647 INFO L87 Difference]: Start difference. First operand 67695 states and 286175 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) [2022-11-16 19:34:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:34:41,318 INFO L93 Difference]: Finished difference Result 80883 states and 337205 transitions. [2022-11-16 19:34:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:34:41,318 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 [2022-11-16 19:34:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:34:42,285 INFO L225 Difference]: With dead ends: 80883 [2022-11-16 19:34:42,285 INFO L226 Difference]: Without dead ends: 80883 [2022-11-16 19:34:42,286 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 [2022-11-16 19:34:42,287 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 20 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 [2022-11-16 19:34:42,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 20 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:34:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80883 states. [2022-11-16 19:34:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80883 to 80693. [2022-11-16 19:34:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80693 states, 80668 states have (on average 4.173811176674766) internal successors, (336693), 80692 states have internal predecessors, (336693), 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) [2022-11-16 19:34:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80693 states to 80693 states and 336693 transitions. [2022-11-16 19:34:46,111 INFO L78 Accepts]: Start accepts. Automaton has 80693 states and 336693 transitions. Word has length 14 [2022-11-16 19:34:46,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:34:46,111 INFO L495 AbstractCegarLoop]: Abstraction has 80693 states and 336693 transitions. [2022-11-16 19:34:46,111 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) [2022-11-16 19:34:46,112 INFO L276 IsEmpty]: Start isEmpty. Operand 80693 states and 336693 transitions. [2022-11-16 19:34:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 19:34:46,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:34:46,121 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-16 19:34:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:34:46,122 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)] === [2022-11-16 19:34:46,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:34:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash 301832957, now seen corresponding path program 1 times [2022-11-16 19:34:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:34:46,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317513447] [2022-11-16 19:34:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:34:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:34:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:34:46,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:34:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:34:46,212 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:34:46,221 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:34:46,222 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-16 19:34:46,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-16 19:34:46,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-16 19:34:46,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-16 19:34:46,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-16 19:34:46,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:34:46,228 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 19:34:46,229 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 19:34:46,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 19:34:46,335 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 19:34:46,339 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:34:46,339 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 379 transitions, 790 flow [2022-11-16 19:34:46,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 379 transitions, 790 flow [2022-11-16 19:34:46,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 379 transitions, 790 flow [2022-11-16 19:34:46,455 INFO L130 PetriNetUnfolder]: 41/429 cut-off events. [2022-11-16 19:34:46,460 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 19:34:46,466 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 1423 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. [2022-11-16 19:34:46,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 95088 [2022-11-16 19:35:18,557 INFO L134 LiptonReduction]: Checked pairs total: 174436 [2022-11-16 19:35:18,557 INFO L136 LiptonReduction]: Total number of compositions: 328 [2022-11-16 19:35:18,558 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 107 places, 126 transitions, 284 flow