./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adac70a9b891a5462c4bee71a2751021c9d437d73a002d25ad244a8f2ad465c8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:38:27,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:38:27,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:38:27,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:38:27,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:38:27,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:38:27,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:38:27,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:38:27,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:38:27,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:38:27,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:38:27,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:38:27,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:38:27,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:38:27,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:38:27,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:38:27,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:38:27,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:38:27,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:38:27,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:38:27,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:38:27,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:38:27,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:38:27,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:38:27,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:38:27,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:38:27,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:38:27,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:38:27,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:38:27,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:38:27,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:38:27,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:38:27,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:38:27,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:38:27,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:38:27,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:38:27,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:38:27,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:38:27,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:38:27,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:38:27,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:38:27,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:38:27,923 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:38:27,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:38:27,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:38:27,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:38:27,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:38:27,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:38:27,925 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:38:27,925 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:38:27,926 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:38:27,926 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:38:27,926 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:38:27,926 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:38:27,927 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:38:27,927 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:38:27,927 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:38:27,927 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:38:27,928 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:38:27,928 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:38:27,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:38:27,929 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:38:27,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:38:27,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:38:27,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:38:27,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:38:27,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:38:27,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:38:27,938 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:38:27,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:38:27,939 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:38:27,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:38:27,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:38:27,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:38:27,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:27,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:38:27,940 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:38:27,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:38:27,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:38:27,941 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:38:27,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:38:27,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:38:27,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:38:27,942 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_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adac70a9b891a5462c4bee71a2751021c9d437d73a002d25ad244a8f2ad465c8 [2022-10-17 17:38:28,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:38:28,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:38:28,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:38:28,223 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:38:28,224 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:38:28,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i [2022-10-17 17:38:28,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/data/e94274b0a/7ea840df220c4b149f48708149a14b58/FLAGc30f060d5 [2022-10-17 17:38:28,884 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:38:28,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i [2022-10-17 17:38:28,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/data/e94274b0a/7ea840df220c4b149f48708149a14b58/FLAGc30f060d5 [2022-10-17 17:38:29,272 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/data/e94274b0a/7ea840df220c4b149f48708149a14b58 [2022-10-17 17:38:29,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:38:29,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:38:29,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:29,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:38:29,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:38:29,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1671b26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29, skipping insertion in model container [2022-10-17 17:38:29,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:38:29,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:38:29,698 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30435,30448] [2022-10-17 17:38:29,703 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30785,30798] [2022-10-17 17:38:29,705 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30975,30988] [2022-10-17 17:38:29,707 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31167,31180] [2022-10-17 17:38:29,710 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31508,31521] [2022-10-17 17:38:29,712 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31698,31711] [2022-10-17 17:38:29,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:29,727 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:38:29,762 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30435,30448] [2022-10-17 17:38:29,764 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30785,30798] [2022-10-17 17:38:29,765 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30975,30988] [2022-10-17 17:38:29,766 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31167,31180] [2022-10-17 17:38:29,768 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31508,31521] [2022-10-17 17:38:29,770 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_e20f774c-6459-4497-b809-eb1a1555b7c4/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31698,31711] [2022-10-17 17:38:29,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:29,819 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:38:29,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29 WrapperNode [2022-10-17 17:38:29,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:29,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:29,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:38:29,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:38:29,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,919 INFO L138 Inliner]: procedures = 176, calls = 35, calls flagged for inlining = 27, calls inlined = 41, statements flattened = 232 [2022-10-17 17:38:29,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:29,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:38:29,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:38:29,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:38:29,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:29,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:38:29,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:38:29,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:38:29,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:38:30,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (1/1) ... [2022-10-17 17:38:30,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:30,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:30,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:38:30,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e20f774c-6459-4497-b809-eb1a1555b7c4/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:38:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-10-17 17:38:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-10-17 17:38:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:38:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:38:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:38:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:38:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:38:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:38:30,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:38:30,090 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 17:38:30,246 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:38:30,248 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:38:30,749 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:38:30,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:38:30,949 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 17:38:30,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:30 BoogieIcfgContainer [2022-10-17 17:38:30,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:38:30,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:38:30,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:38:30,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:38:30,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:38:29" (1/3) ... [2022-10-17 17:38:30,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e66c495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:30, skipping insertion in model container [2022-10-17 17:38:30,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:29" (2/3) ... [2022-10-17 17:38:30,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e66c495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:30, skipping insertion in model container [2022-10-17 17:38:30,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:30" (3/3) ... [2022-10-17 17:38:30,962 INFO L112 eAbstractionObserver]: Analyzing ICFG 42_FreeBSD_rdma_addr_sliced.i [2022-10-17 17:38:30,971 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 17:38:30,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:38:30,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-17 17:38:30,983 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 17:38:31,070 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 17:38:31,113 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 17:38:31,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 164 transitions, 333 flow [2022-10-17 17:38:31,140 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 164 transitions, 333 flow [2022-10-17 17:38:31,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 164 transitions, 333 flow [2022-10-17 17:38:31,250 INFO L130 PetriNetUnfolder]: 26/175 cut-off events. [2022-10-17 17:38:31,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 17:38:31,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 175 events. 26/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 459 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 146. Up to 6 conditions per place. [2022-10-17 17:38:31,261 INFO L118 LiptonReduction]: Number of co-enabled transitions 3724 [2022-10-17 17:38:38,480 INFO L133 LiptonReduction]: Checked pairs total: 3436 [2022-10-17 17:38:38,481 INFO L135 LiptonReduction]: Total number of compositions: 230 [2022-10-17 17:38:38,492 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 35 flow [2022-10-17 17:38:38,510 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:38,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:38:38,543 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;@459c7703, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:38:38,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-10-17 17:38:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:38,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:38:38,557 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:38,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:38:38,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-10-17 17:38:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1103070375, now seen corresponding path program 1 times [2022-10-17 17:38:38,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:38,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279989814] [2022-10-17 17:38:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:38,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:38,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:38,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279989814] [2022-10-17 17:38:38,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279989814] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:38,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:38,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:38:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29572480] [2022-10-17 17:38:38,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:38,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:38:38,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:38:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:38:38,891 INFO L87 Difference]: Start difference. First operand has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 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 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:38,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:38,921 INFO L93 Difference]: Finished difference Result 11 states and 17 transitions. [2022-10-17 17:38:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:38:38,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 17:38:38,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:38,931 INFO L225 Difference]: With dead ends: 11 [2022-10-17 17:38:38,931 INFO L226 Difference]: Without dead ends: 11 [2022-10-17 17:38:38,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:38:38,937 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:38,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:38:38,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-10-17 17:38:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-10-17 17:38:38,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2022-10-17 17:38:38,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 17 transitions. Word has length 5 [2022-10-17 17:38:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:38,978 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 17 transitions. [2022-10-17 17:38:38,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 17 transitions. [2022-10-17 17:38:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:38:38,981 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:38,981 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-10-17 17:38:38,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:38:38,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-10-17 17:38:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash -164369285, now seen corresponding path program 1 times [2022-10-17 17:38:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:38,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359639925] [2022-10-17 17:38:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:38,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:38:39,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:38:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:38:39,103 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:38:39,104 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:38:39,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-10-17 17:38:39,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2022-10-17 17:38:39,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2022-10-17 17:38:39,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2022-10-17 17:38:39,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2022-10-17 17:38:39,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2022-10-17 17:38:39,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2022-10-17 17:38:39,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2022-10-17 17:38:39,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2022-10-17 17:38:39,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2022-10-17 17:38:39,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2022-10-17 17:38:39,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2022-10-17 17:38:39,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2022-10-17 17:38:39,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:38:39,127 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:38:39,129 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 17:38:39,129 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 17:38:39,191 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 17:38:39,200 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 17:38:39,200 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 298 transitions, 608 flow [2022-10-17 17:38:39,201 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 298 transitions, 608 flow [2022-10-17 17:38:39,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 298 transitions, 608 flow [2022-10-17 17:38:39,331 INFO L130 PetriNetUnfolder]: 51/322 cut-off events. [2022-10-17 17:38:39,332 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 17:38:39,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 322 events. 51/322 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1282 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 279. Up to 6 conditions per place. [2022-10-17 17:38:39,373 INFO L118 LiptonReduction]: Number of co-enabled transitions 43092 [2022-10-17 17:38:47,463 INFO L133 LiptonReduction]: Checked pairs total: 148603 [2022-10-17 17:38:47,463 INFO L135 LiptonReduction]: Total number of compositions: 277 [2022-10-17 17:38:47,465 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 125 transitions, 262 flow [2022-10-17 17:38:48,046 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 11310 states, 11207 states have (on average 3.5633086463817256) internal successors, (39934), 11309 states have internal predecessors, (39934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:48,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:38:48,051 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;@459c7703, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:38:48,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-10-17 17:38:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 11310 states, 11207 states have (on average 3.5633086463817256) internal successors, (39934), 11309 states have internal predecessors, (39934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:38:48,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:48,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:38:48,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-10-17 17:38:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash 940727889, now seen corresponding path program 1 times [2022-10-17 17:38:48,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:48,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410339860] [2022-10-17 17:38:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:48,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:48,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410339860] [2022-10-17 17:38:48,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410339860] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:48,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:48,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:38:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733077990] [2022-10-17 17:38:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:48,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:38:48,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:38:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:38:48,442 INFO L87 Difference]: Start difference. First operand has 11310 states, 11207 states have (on average 3.5633086463817256) internal successors, (39934), 11309 states have internal predecessors, (39934), 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, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:48,658 INFO L93 Difference]: Finished difference Result 2455 states and 6685 transitions. [2022-10-17 17:38:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:38:48,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:38:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:48,689 INFO L225 Difference]: With dead ends: 2455 [2022-10-17 17:38:48,689 INFO L226 Difference]: Without dead ends: 2455 [2022-10-17 17:38:48,689 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 [2022-10-17 17:38:48,691 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 51 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:48,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 33 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:38:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-10-17 17:38:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-10-17 17:38:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2455 states have (on average 2.7230142566191446) internal successors, (6685), 2454 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 6685 transitions. [2022-10-17 17:38:48,822 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 6685 transitions. Word has length 6 [2022-10-17 17:38:48,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:48,823 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 6685 transitions. [2022-10-17 17:38:48,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 6685 transitions. [2022-10-17 17:38:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:38:48,826 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:48,826 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-10-17 17:38:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:38:48,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-10-17 17:38:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -337166663, now seen corresponding path program 1 times [2022-10-17 17:38:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:48,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118841389] [2022-10-17 17:38:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:48,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:38:48,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:38:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:38:48,873 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:38:48,877 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:38:48,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-10-17 17:38:48,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (17 of 19 remaining) [2022-10-17 17:38:48,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (16 of 19 remaining) [2022-10-17 17:38:48,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (15 of 19 remaining) [2022-10-17 17:38:48,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (14 of 19 remaining) [2022-10-17 17:38:48,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (13 of 19 remaining) [2022-10-17 17:38:48,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (12 of 19 remaining) [2022-10-17 17:38:48,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 19 remaining) [2022-10-17 17:38:48,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 19 remaining) [2022-10-17 17:38:48,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 19 remaining) [2022-10-17 17:38:48,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 19 remaining) [2022-10-17 17:38:48,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 19 remaining) [2022-10-17 17:38:48,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 19 remaining) [2022-10-17 17:38:48,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 19 remaining) [2022-10-17 17:38:48,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 19 remaining) [2022-10-17 17:38:48,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 19 remaining) [2022-10-17 17:38:48,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 19 remaining) [2022-10-17 17:38:48,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 19 remaining) [2022-10-17 17:38:48,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 19 remaining) [2022-10-17 17:38:48,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:38:48,884 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:38:48,884 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 17:38:48,884 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-17 17:38:48,966 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 17:38:48,971 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 17:38:48,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 366 places, 432 transitions, 885 flow [2022-10-17 17:38:48,972 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 366 places, 432 transitions, 885 flow [2022-10-17 17:38:48,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 432 transitions, 885 flow [2022-10-17 17:38:49,083 INFO L130 PetriNetUnfolder]: 76/469 cut-off events. [2022-10-17 17:38:49,083 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 17:38:49,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 469 events. 76/469 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2186 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 412. Up to 8 conditions per place. [2022-10-17 17:38:49,138 INFO L118 LiptonReduction]: Number of co-enabled transitions 118104