./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9071d56f4666aca734ab742196d3aa15fce92ad6b7c276706d2cff43d2d6147a --- 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-38b53e6 [2022-11-25 17:30:54,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:30:54,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:30:54,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:30:54,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:30:54,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:30:54,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:30:54,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:30:54,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:30:54,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:30:54,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:30:54,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:30:54,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:30:54,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:30:54,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:30:54,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:30:54,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:30:54,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:30:54,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:30:54,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:30:54,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:30:54,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:30:54,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:30:54,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:30:54,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:30:54,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:30:54,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:30:54,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:30:54,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:30:54,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:30:54,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:30:54,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:30:54,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:30:54,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:30:54,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:30:54,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:30:54,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:30:54,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:30:54,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:30:54,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:30:54,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:30:54,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:30:54,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:30:54,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:30:54,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:30:54,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:30:54,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:30:54,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:30:54,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:30:54,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:30:54,980 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:30:54,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:30:54,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:30:54,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:30:54,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:30:54,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:30:54,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:30:54,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:30:54,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:30:54,982 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:30:54,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:30:54,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:30:54,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:30:54,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:30:54,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:30:54,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:30:54,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:54,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:30:54,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:30:54,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:30:54,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:30:54,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:30:54,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:30:54,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:30:54,985 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:30:54,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:30:54,985 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9071d56f4666aca734ab742196d3aa15fce92ad6b7c276706d2cff43d2d6147a [2022-11-25 17:30:55,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:30:55,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:30:55,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:30:55,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:30:55,329 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:30:55,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:30:58,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:30:58,689 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:30:58,690 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:30:58,714 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/data/4a6c069f9/55f1fffa6acf4cb2a292344e9b3228a1/FLAGcb3a153d1 [2022-11-25 17:30:58,729 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/data/4a6c069f9/55f1fffa6acf4cb2a292344e9b3228a1 [2022-11-25 17:30:58,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:30:58,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:30:58,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:58,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:30:58,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:30:58,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:58" (1/1) ... [2022-11-25 17:30:58,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311d88d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:58, skipping insertion in model container [2022-11-25 17:30:58,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:58" (1/1) ... [2022-11-25 17:30:58,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:30:58,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:30:58,990 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 17:30:59,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:59,292 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:30:59,308 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 17:30:59,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:30:59,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:30:59,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:59,440 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:30:59,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59 WrapperNode [2022-11-25 17:30:59,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:59,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:30:59,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:30:59,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:30:59,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,516 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-25 17:30:59,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:30:59,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:30:59,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:30:59,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:30:59,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:30:59,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:30:59,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:30:59,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:30:59,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (1/1) ... [2022-11-25 17:30:59,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:59,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:30:59,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:30:59,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:30:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:30:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:30:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:30:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:30:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:30:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 17:30:59,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 17:30:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 17:30:59,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 17:30:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 17:30:59,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 17:30:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:30:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:30:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:30:59,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:30:59,672 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:30:59,850 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:30:59,852 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:31:00,033 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:31:00,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:31:00,042 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:31:00,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:31:00 BoogieIcfgContainer [2022-11-25 17:31:00,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:31:00,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:31:00,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:31:00,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:31:00,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:30:58" (1/3) ... [2022-11-25 17:31:00,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7405a655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:31:00, skipping insertion in model container [2022-11-25 17:31:00,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:59" (2/3) ... [2022-11-25 17:31:00,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7405a655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:31:00, skipping insertion in model container [2022-11-25 17:31:00,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:31:00" (3/3) ... [2022-11-25 17:31:00,054 INFO L112 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:31:00,063 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:31:00,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:31:00,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:31:00,074 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:31:00,158 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:31:00,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-11-25 17:31:00,297 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-25 17:31:00,298 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:31:00,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-25 17:31:00,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-11-25 17:31:00,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-11-25 17:31:00,312 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:31:00,329 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2022-11-25 17:31:00,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2022-11-25 17:31:00,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2022-11-25 17:31:00,357 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-11-25 17:31:00,357 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:31:00,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 37 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-25 17:31:00,359 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-11-25 17:31:03,067 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2022-11-25 17:31:03,068 INFO L136 LiptonReduction]: Total number of compositions: 60 [2022-11-25 17:31:03,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:31:03,110 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=PETRI_NET, 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;@6710b8c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:31:03,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 17:31:03,123 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-11-25 17:31:03,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:31:03,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:03,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:03,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash -808545862, now seen corresponding path program 1 times [2022-11-25 17:31:03,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:03,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360371560] [2022-11-25 17:31:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:03,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:03,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:03,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360371560] [2022-11-25 17:31:03,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360371560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:03,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:03,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:31:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537432939] [2022-11-25 17:31:03,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:31:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:31:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:31:03,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2022-11-25 17:31:03,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-11-25 17:31:03,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:03,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2022-11-25 17:31:03,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:04,079 INFO L130 PetriNetUnfolder]: 551/886 cut-off events. [2022-11-25 17:31:04,079 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-25 17:31:04,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 886 events. 551/886 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3758 event pairs, 188 based on Foata normal form. 42/928 useless extension candidates. Maximal degree in co-relation 1816. Up to 543 conditions per place. [2022-11-25 17:31:04,088 INFO L137 encePairwiseOnDemand]: 145/152 looper letters, 23 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2022-11-25 17:31:04,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 128 flow [2022-11-25 17:31:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:31:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:31:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2022-11-25 17:31:04,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2022-11-25 17:31:04,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2022-11-25 17:31:04,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2022-11-25 17:31:04,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:04,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2022-11-25 17:31:04,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-11-25 17:31:04,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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) [2022-11-25 17:31:04,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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) [2022-11-25 17:31:04,147 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 261 transitions. [2022-11-25 17:31:04,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 128 flow [2022-11-25 17:31:04,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:31:04,153 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2022-11-25 17:31:04,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2022-11-25 17:31:04,165 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2022-11-25 17:31:04,165 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2022-11-25 17:31:04,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-11-25 17:31:04,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:04,166 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:04,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:31:04,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:04,176 INFO L85 PathProgramCache]: Analyzing trace with hash 704880839, now seen corresponding path program 1 times [2022-11-25 17:31:04,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:04,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411625633] [2022-11-25 17:31:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:04,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:04,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411625633] [2022-11-25 17:31:04,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411625633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:04,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:04,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:31:04,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874790684] [2022-11-25 17:31:04,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:04,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:31:04,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:04,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:31:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:31:04,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2022-11-25 17:31:04,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2022-11-25 17:31:04,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:04,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2022-11-25 17:31:04,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:04,542 INFO L130 PetriNetUnfolder]: 505/816 cut-off events. [2022-11-25 17:31:04,542 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2022-11-25 17:31:04,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 816 events. 505/816 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3343 event pairs, 121 based on Foata normal form. 12/828 useless extension candidates. Maximal degree in co-relation 2202. Up to 455 conditions per place. [2022-11-25 17:31:04,550 INFO L137 encePairwiseOnDemand]: 145/152 looper letters, 33 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2022-11-25 17:31:04,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 222 flow [2022-11-25 17:31:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:31:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:31:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2022-11-25 17:31:04,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.569078947368421 [2022-11-25 17:31:04,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2022-11-25 17:31:04,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2022-11-25 17:31:04,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:04,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2022-11-25 17:31:04,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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) [2022-11-25 17:31:04,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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) [2022-11-25 17:31:04,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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) [2022-11-25 17:31:04,562 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 346 transitions. [2022-11-25 17:31:04,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 222 flow [2022-11-25 17:31:04,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:31:04,569 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2022-11-25 17:31:04,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2022-11-25 17:31:04,570 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-11-25 17:31:04,570 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2022-11-25 17:31:04,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2022-11-25 17:31:04,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:04,571 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:04,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:31:04,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 376482853, now seen corresponding path program 1 times [2022-11-25 17:31:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:04,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133180732] [2022-11-25 17:31:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:04,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:04,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133180732] [2022-11-25 17:31:04,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133180732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:04,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:04,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:31:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394004182] [2022-11-25 17:31:04,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:31:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:31:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:31:04,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 152 [2022-11-25 17:31:04,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-11-25 17:31:04,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:04,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 152 [2022-11-25 17:31:04,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:04,888 INFO L130 PetriNetUnfolder]: 355/625 cut-off events. [2022-11-25 17:31:04,889 INFO L131 PetriNetUnfolder]: For 553/581 co-relation queries the response was YES. [2022-11-25 17:31:04,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 625 events. 355/625 cut-off events. For 553/581 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2867 event pairs, 113 based on Foata normal form. 18/622 useless extension candidates. Maximal degree in co-relation 1724. Up to 355 conditions per place. [2022-11-25 17:31:04,895 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 18 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2022-11-25 17:31:04,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 182 flow [2022-11-25 17:31:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:31:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:31:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-11-25 17:31:04,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2022-11-25 17:31:04,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-11-25 17:31:04,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-11-25 17:31:04,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:04,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-11-25 17:31:04,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2022-11-25 17:31:04,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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) [2022-11-25 17:31:04,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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) [2022-11-25 17:31:04,900 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 3 states and 272 transitions. [2022-11-25 17:31:04,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 182 flow [2022-11-25 17:31:04,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:31:04,905 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 133 flow [2022-11-25 17:31:04,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2022-11-25 17:31:04,905 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-11-25 17:31:04,906 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 133 flow [2022-11-25 17:31:04,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-11-25 17:31:04,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:04,906 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:31:04,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -373067480, now seen corresponding path program 1 times [2022-11-25 17:31:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:04,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813670343] [2022-11-25 17:31:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813670343] [2022-11-25 17:31:05,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813670343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:05,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:05,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:31:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586577579] [2022-11-25 17:31:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:05,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:31:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:31:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:31:05,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2022-11-25 17:31:05,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2022-11-25 17:31:05,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:05,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2022-11-25 17:31:05,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:05,219 INFO L130 PetriNetUnfolder]: 447/728 cut-off events. [2022-11-25 17:31:05,219 INFO L131 PetriNetUnfolder]: For 576/576 co-relation queries the response was YES. [2022-11-25 17:31:05,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 728 events. 447/728 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2979 event pairs, 97 based on Foata normal form. 12/740 useless extension candidates. Maximal degree in co-relation 2264. Up to 377 conditions per place. [2022-11-25 17:31:05,225 INFO L137 encePairwiseOnDemand]: 145/152 looper letters, 32 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2022-11-25 17:31:05,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 284 flow [2022-11-25 17:31:05,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:31:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:31:05,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2022-11-25 17:31:05,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.569078947368421 [2022-11-25 17:31:05,227 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2022-11-25 17:31:05,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2022-11-25 17:31:05,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:05,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2022-11-25 17:31:05,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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) [2022-11-25 17:31:05,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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) [2022-11-25 17:31:05,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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) [2022-11-25 17:31:05,231 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 133 flow. Second operand 4 states and 346 transitions. [2022-11-25 17:31:05,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 284 flow [2022-11-25 17:31:05,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:31:05,235 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 202 flow [2022-11-25 17:31:05,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2022-11-25 17:31:05,236 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-11-25 17:31:05,236 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 202 flow [2022-11-25 17:31:05,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2022-11-25 17:31:05,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:05,237 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:05,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:31:05,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:05,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:05,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1213934660, now seen corresponding path program 1 times [2022-11-25 17:31:05,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:05,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925820550] [2022-11-25 17:31:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:05,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:05,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:05,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925820550] [2022-11-25 17:31:05,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925820550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:05,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:05,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:31:05,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851029054] [2022-11-25 17:31:05,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:05,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:31:05,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:05,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:31:05,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:31:05,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 152 [2022-11-25 17:31:05,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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) [2022-11-25 17:31:05,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:05,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 152 [2022-11-25 17:31:05,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:05,486 INFO L130 PetriNetUnfolder]: 292/556 cut-off events. [2022-11-25 17:31:05,486 INFO L131 PetriNetUnfolder]: For 1499/1519 co-relation queries the response was YES. [2022-11-25 17:31:05,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 556 events. 292/556 cut-off events. For 1499/1519 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2868 event pairs, 64 based on Foata normal form. 37/570 useless extension candidates. Maximal degree in co-relation 1882. Up to 288 conditions per place. [2022-11-25 17:31:05,491 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 43 selfloop transitions, 8 changer transitions 2/63 dead transitions. [2022-11-25 17:31:05,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 63 transitions, 532 flow [2022-11-25 17:31:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:31:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:31:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 444 transitions. [2022-11-25 17:31:05,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5842105263157895 [2022-11-25 17:31:05,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 444 transitions. [2022-11-25 17:31:05,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 444 transitions. [2022-11-25 17:31:05,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:05,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 444 transitions. [2022-11-25 17:31:05,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 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) [2022-11-25 17:31:05,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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) [2022-11-25 17:31:05,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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) [2022-11-25 17:31:05,498 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 202 flow. Second operand 5 states and 444 transitions. [2022-11-25 17:31:05,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 63 transitions, 532 flow [2022-11-25 17:31:05,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:31:05,505 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 258 flow [2022-11-25 17:31:05,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2022-11-25 17:31:05,507 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2022-11-25 17:31:05,508 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 258 flow [2022-11-25 17:31:05,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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) [2022-11-25 17:31:05,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:05,509 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:05,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:31:05,510 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash 18894878, now seen corresponding path program 1 times [2022-11-25 17:31:05,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:05,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532791073] [2022-11-25 17:31:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:05,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:05,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532791073] [2022-11-25 17:31:05,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532791073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:05,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:05,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:31:05,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275048269] [2022-11-25 17:31:05,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:05,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:31:05,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:05,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:31:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:31:05,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 152 [2022-11-25 17:31:05,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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) [2022-11-25 17:31:05,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:05,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 152 [2022-11-25 17:31:05,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:05,890 INFO L130 PetriNetUnfolder]: 267/531 cut-off events. [2022-11-25 17:31:05,890 INFO L131 PetriNetUnfolder]: For 1892/2034 co-relation queries the response was YES. [2022-11-25 17:31:05,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 531 events. 267/531 cut-off events. For 1892/2034 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2833 event pairs, 32 based on Foata normal form. 110/622 useless extension candidates. Maximal degree in co-relation 2237. Up to 237 conditions per place. [2022-11-25 17:31:05,914 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 49 selfloop transitions, 15 changer transitions 8/82 dead transitions. [2022-11-25 17:31:05,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 744 flow [2022-11-25 17:31:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:31:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:31:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 621 transitions. [2022-11-25 17:31:05,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5836466165413534 [2022-11-25 17:31:05,919 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 621 transitions. [2022-11-25 17:31:05,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 621 transitions. [2022-11-25 17:31:05,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:05,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 621 transitions. [2022-11-25 17:31:05,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 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) [2022-11-25 17:31:05,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2022-11-25 17:31:05,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2022-11-25 17:31:05,925 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 258 flow. Second operand 7 states and 621 transitions. [2022-11-25 17:31:05,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 744 flow [2022-11-25 17:31:05,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:31:05,931 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 353 flow [2022-11-25 17:31:05,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2022-11-25 17:31:05,932 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2022-11-25 17:31:05,932 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 353 flow [2022-11-25 17:31:05,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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) [2022-11-25 17:31:05,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:05,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:05,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:31:05,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash 976361222, now seen corresponding path program 1 times [2022-11-25 17:31:05,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:05,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123802655] [2022-11-25 17:31:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:06,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:06,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123802655] [2022-11-25 17:31:06,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123802655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:06,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:06,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:31:06,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166508369] [2022-11-25 17:31:06,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:06,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:31:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:31:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:31:06,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 152 [2022-11-25 17:31:06,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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) [2022-11-25 17:31:06,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:06,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 152 [2022-11-25 17:31:06,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:06,294 INFO L130 PetriNetUnfolder]: 251/505 cut-off events. [2022-11-25 17:31:06,294 INFO L131 PetriNetUnfolder]: For 2477/2628 co-relation queries the response was YES. [2022-11-25 17:31:06,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 505 events. 251/505 cut-off events. For 2477/2628 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2740 event pairs, 28 based on Foata normal form. 95/582 useless extension candidates. Maximal degree in co-relation 2451. Up to 220 conditions per place. [2022-11-25 17:31:06,301 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 45 selfloop transitions, 19 changer transitions 9/83 dead transitions. [2022-11-25 17:31:06,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 813 flow [2022-11-25 17:31:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:31:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:31:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 784 transitions. [2022-11-25 17:31:06,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5730994152046783 [2022-11-25 17:31:06,305 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 784 transitions. [2022-11-25 17:31:06,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 784 transitions. [2022-11-25 17:31:06,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:06,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 784 transitions. [2022-11-25 17:31:06,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.11111111111111) internal successors, (784), 9 states have internal predecessors, (784), 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) [2022-11-25 17:31:06,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 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) [2022-11-25 17:31:06,313 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 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) [2022-11-25 17:31:06,313 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 353 flow. Second operand 9 states and 784 transitions. [2022-11-25 17:31:06,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 813 flow [2022-11-25 17:31:06,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 778 flow, removed 13 selfloop flow, removed 2 redundant places. [2022-11-25 17:31:06,329 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 379 flow [2022-11-25 17:31:06,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=379, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2022-11-25 17:31:06,330 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 34 predicate places. [2022-11-25 17:31:06,331 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 379 flow [2022-11-25 17:31:06,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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) [2022-11-25 17:31:06,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:06,331 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:06,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:31:06,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash -703881832, now seen corresponding path program 1 times [2022-11-25 17:31:06,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:06,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107859361] [2022-11-25 17:31:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:06,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:06,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107859361] [2022-11-25 17:31:06,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107859361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:06,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:06,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:31:06,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962251523] [2022-11-25 17:31:06,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:06,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:31:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:06,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:31:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:31:06,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2022-11-25 17:31:06,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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) [2022-11-25 17:31:06,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:06,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2022-11-25 17:31:06,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:06,756 INFO L130 PetriNetUnfolder]: 524/944 cut-off events. [2022-11-25 17:31:06,756 INFO L131 PetriNetUnfolder]: For 3822/3822 co-relation queries the response was YES. [2022-11-25 17:31:06,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4778 conditions, 944 events. 524/944 cut-off events. For 3822/3822 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4817 event pairs, 73 based on Foata normal form. 1/945 useless extension candidates. Maximal degree in co-relation 4745. Up to 368 conditions per place. [2022-11-25 17:31:06,766 INFO L137 encePairwiseOnDemand]: 145/152 looper letters, 39 selfloop transitions, 11 changer transitions 72/122 dead transitions. [2022-11-25 17:31:06,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 122 transitions, 1247 flow [2022-11-25 17:31:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:31:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:31:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2022-11-25 17:31:06,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2022-11-25 17:31:06,769 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 516 transitions. [2022-11-25 17:31:06,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 516 transitions. [2022-11-25 17:31:06,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:06,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 516 transitions. [2022-11-25 17:31:06,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2022-11-25 17:31:06,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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) [2022-11-25 17:31:06,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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) [2022-11-25 17:31:06,774 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 379 flow. Second operand 6 states and 516 transitions. [2022-11-25 17:31:06,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 122 transitions, 1247 flow [2022-11-25 17:31:06,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 122 transitions, 1033 flow, removed 39 selfloop flow, removed 8 redundant places. [2022-11-25 17:31:06,807 INFO L231 Difference]: Finished difference. Result has 59 places, 33 transitions, 276 flow [2022-11-25 17:31:06,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=59, PETRI_TRANSITIONS=33} [2022-11-25 17:31:06,810 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 32 predicate places. [2022-11-25 17:31:06,811 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 33 transitions, 276 flow [2022-11-25 17:31:06,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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) [2022-11-25 17:31:06,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:06,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:06,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:31:06,814 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash 562714892, now seen corresponding path program 2 times [2022-11-25 17:31:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:06,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581145898] [2022-11-25 17:31:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:06,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:06,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581145898] [2022-11-25 17:31:06,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581145898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:06,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:06,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:31:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143426522] [2022-11-25 17:31:06,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:06,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:31:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:31:06,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:31:07,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 152 [2022-11-25 17:31:07,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 33 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2022-11-25 17:31:07,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:07,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 152 [2022-11-25 17:31:07,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:07,098 INFO L130 PetriNetUnfolder]: 141/313 cut-off events. [2022-11-25 17:31:07,099 INFO L131 PetriNetUnfolder]: For 1337/1351 co-relation queries the response was YES. [2022-11-25 17:31:07,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 313 events. 141/313 cut-off events. For 1337/1351 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1468 event pairs, 21 based on Foata normal form. 4/314 useless extension candidates. Maximal degree in co-relation 1443. Up to 160 conditions per place. [2022-11-25 17:31:07,101 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 21 selfloop transitions, 1 changer transitions 36/60 dead transitions. [2022-11-25 17:31:07,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 573 flow [2022-11-25 17:31:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:31:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:31:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2022-11-25 17:31:07,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5888157894736842 [2022-11-25 17:31:07,103 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2022-11-25 17:31:07,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2022-11-25 17:31:07,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:07,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2022-11-25 17:31:07,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2022-11-25 17:31:07,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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) [2022-11-25 17:31:07,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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) [2022-11-25 17:31:07,107 INFO L175 Difference]: Start difference. First operand has 59 places, 33 transitions, 276 flow. Second operand 4 states and 358 transitions. [2022-11-25 17:31:07,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 573 flow [2022-11-25 17:31:07,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 489 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-11-25 17:31:07,114 INFO L231 Difference]: Finished difference. Result has 45 places, 23 transitions, 137 flow [2022-11-25 17:31:07,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=23} [2022-11-25 17:31:07,114 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2022-11-25 17:31:07,115 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 23 transitions, 137 flow [2022-11-25 17:31:07,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2022-11-25 17:31:07,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:31:07,115 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:07,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:31:07,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 17:31:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1878046834, now seen corresponding path program 3 times [2022-11-25 17:31:07,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:07,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634001386] [2022-11-25 17:31:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:07,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:07,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634001386] [2022-11-25 17:31:07,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634001386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:07,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:07,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:31:07,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164769794] [2022-11-25 17:31:07,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:07,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:31:07,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:07,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:31:07,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:31:07,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 152 [2022-11-25 17:31:07,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 23 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2022-11-25 17:31:07,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:31:07,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 152 [2022-11-25 17:31:07,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:31:07,305 INFO L130 PetriNetUnfolder]: 43/102 cut-off events. [2022-11-25 17:31:07,305 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2022-11-25 17:31:07,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 102 events. 43/102 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 280 event pairs, 6 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 422. Up to 73 conditions per place. [2022-11-25 17:31:07,306 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2022-11-25 17:31:07,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 29 transitions, 220 flow [2022-11-25 17:31:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:31:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:31:07,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2022-11-25 17:31:07,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2022-11-25 17:31:07,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2022-11-25 17:31:07,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2022-11-25 17:31:07,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:31:07,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2022-11-25 17:31:07,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-11-25 17:31:07,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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) [2022-11-25 17:31:07,313 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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) [2022-11-25 17:31:07,314 INFO L175 Difference]: Start difference. First operand has 45 places, 23 transitions, 137 flow. Second operand 4 states and 344 transitions. [2022-11-25 17:31:07,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 29 transitions, 220 flow [2022-11-25 17:31:07,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 194 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-25 17:31:07,316 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2022-11-25 17:31:07,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2022-11-25 17:31:07,317 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-11-25 17:31:07,317 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2022-11-25 17:31:07,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2022-11-25 17:31:07,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-25 17:31:07,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-25 17:31:07,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-25 17:31:07,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-25 17:31:07,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:31:07,322 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:07,326 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:31:07,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:31:07,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:31:07 BasicIcfg [2022-11-25 17:31:07,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:31:07,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:31:07,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:31:07,331 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:31:07,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:31:00" (3/4) ... [2022-11-25 17:31:07,334 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:31:07,342 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 17:31:07,342 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 17:31:07,342 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 17:31:07,347 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-25 17:31:07,347 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:31:07,347 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:31:07,348 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:31:07,379 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:31:07,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:31:07,380 INFO L158 Benchmark]: Toolchain (without parser) took 8643.11ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 134.6MB in the beginning and 215.8MB in the end (delta: -81.2MB). Peak memory consumption was 167.2kB. Max. memory is 16.1GB. [2022-11-25 17:31:07,381 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:31:07,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 701.57ms. Allocated memory is still 178.3MB. Free memory was 134.6MB in the beginning and 110.9MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-25 17:31:07,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.77ms. Allocated memory is still 178.3MB. Free memory was 110.9MB in the beginning and 108.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:31:07,382 INFO L158 Benchmark]: Boogie Preprocessor took 55.30ms. Allocated memory is still 178.3MB. Free memory was 108.8MB in the beginning and 107.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:31:07,382 INFO L158 Benchmark]: RCFGBuilder took 470.76ms. Allocated memory is still 178.3MB. Free memory was 107.4MB in the beginning and 94.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:31:07,382 INFO L158 Benchmark]: TraceAbstraction took 7282.93ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 93.5MB in the beginning and 219.0MB in the end (delta: -125.5MB). Peak memory consumption was 75.8MB. Max. memory is 16.1GB. [2022-11-25 17:31:07,383 INFO L158 Benchmark]: Witness Printer took 49.34ms. Allocated memory is still 257.9MB. Free memory was 219.0MB in the beginning and 215.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:31:07,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 701.57ms. Allocated memory is still 178.3MB. Free memory was 134.6MB in the beginning and 110.9MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.77ms. Allocated memory is still 178.3MB. Free memory was 110.9MB in the beginning and 108.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.30ms. Allocated memory is still 178.3MB. Free memory was 108.8MB in the beginning and 107.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 470.76ms. Allocated memory is still 178.3MB. Free memory was 107.4MB in the beginning and 94.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7282.93ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 93.5MB in the beginning and 219.0MB in the end (delta: -125.5MB). Peak memory consumption was 75.8MB. Max. memory is 16.1GB. * Witness Printer took 49.34ms. Allocated memory is still 257.9MB. Free memory was 219.0MB in the beginning and 215.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 17 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1244, independent: 1163, independent conditional: 0, independent unconditional: 1163, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 808, independent: 766, independent conditional: 0, independent unconditional: 766, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 808, independent: 757, independent conditional: 0, independent unconditional: 757, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 51, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 188, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1244, independent: 397, independent conditional: 0, independent unconditional: 397, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 808, unknown conditional: 0, unknown unconditional: 808] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 238 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 637 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 52 mSDtfsCounter, 637 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred in iteration=7, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 539 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:31:07,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56dbff27-836a-4ad3-ac57-a935e71f0f9c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE