./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/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_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/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_7adef101-5611-4f2d-ade7-26a276bfaa10/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 28f58acc3eb15266c6a84eca373e682a200492b696916dc340e2c03025141f5c --- 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 18:03:02,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:03:02,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:03:02,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:03:02,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:03:02,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:03:02,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:03:02,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:03:02,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:03:03,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:03:03,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:03:03,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:03:03,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:03:03,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:03:03,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:03:03,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:03:03,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:03:03,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:03:03,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:03:03,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:03:03,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:03:03,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:03:03,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:03:03,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:03:03,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:03:03,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:03:03,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:03:03,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:03:03,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:03:03,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:03:03,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:03:03,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:03:03,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:03:03,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:03:03,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:03:03,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:03:03,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:03:03,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:03:03,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:03:03,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:03:03,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:03:03,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:03:03,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:03:03,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:03:03,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:03:03,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:03:03,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:03:03,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:03:03,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:03:03,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:03:03,100 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:03:03,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:03:03,102 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:03:03,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:03:03,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:03:03,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:03:03,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:03:03,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:03:03,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:03:03,103 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:03:03,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:03:03,104 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:03:03,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:03:03,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:03:03,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:03:03,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:03:03,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:03:03,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:03:03,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:03:03,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:03:03,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:03:03,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:03:03,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:03:03,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:03:03,107 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:03:03,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:03:03,107 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_7adef101-5611-4f2d-ade7-26a276bfaa10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28f58acc3eb15266c6a84eca373e682a200492b696916dc340e2c03025141f5c [2022-11-25 18:03:03,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:03:03,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:03:03,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:03:03,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:03:03,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:03:03,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i [2022-11-25 18:03:06,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:03:06,794 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:03:06,795 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/sv-benchmarks/c/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i [2022-11-25 18:03:06,823 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/data/11ef4c343/4876224c7eba43ceb25f22dfc26664e1/FLAG3c79409db [2022-11-25 18:03:06,844 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/data/11ef4c343/4876224c7eba43ceb25f22dfc26664e1 [2022-11-25 18:03:06,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:03:06,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:03:06,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:03:06,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:03:06,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:03:06,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:03:06" (1/1) ... [2022-11-25 18:03:06,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3643b299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:06, skipping insertion in model container [2022-11-25 18:03:06,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:03:06" (1/1) ... [2022-11-25 18:03:06,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:03:06,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:03:07,171 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_7adef101-5611-4f2d-ade7-26a276bfaa10/sv-benchmarks/c/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i[966,979] [2022-11-25 18:03:07,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:03:07,465 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:03:07,478 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_7adef101-5611-4f2d-ade7-26a276bfaa10/sv-benchmarks/c/pthread-wmm/mix023_power.opt_pso.opt_rmo.opt.i[966,979] [2022-11-25 18:03:07,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:03:07,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:03:07,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:03:07,573 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:03:07,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07 WrapperNode [2022-11-25 18:03:07,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:03:07,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:03:07,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:03:07,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:03:07,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,623 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-11-25 18:03:07,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:03:07,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:03:07,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:03:07,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:03:07,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,657 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:03:07,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:03:07,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:03:07,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:03:07,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (1/1) ... [2022-11-25 18:03:07,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:03:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:07,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:03:07,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:03:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:03:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:03:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:03:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:03:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:03:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 18:03:07,805 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 18:03:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 18:03:07,805 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 18:03:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 18:03:07,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 18:03:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-25 18:03:07,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-25 18:03:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:03:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:03:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:03:07,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:03:07,809 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 18:03:08,002 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:03:08,004 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:03:08,351 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:03:08,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:03:08,513 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:03:08,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:03:08 BoogieIcfgContainer [2022-11-25 18:03:08,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:03:08,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:03:08,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:03:08,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:03:08,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:03:06" (1/3) ... [2022-11-25 18:03:08,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfc6c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:03:08, skipping insertion in model container [2022-11-25 18:03:08,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:07" (2/3) ... [2022-11-25 18:03:08,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfc6c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:03:08, skipping insertion in model container [2022-11-25 18:03:08,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:03:08" (3/3) ... [2022-11-25 18:03:08,524 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_power.opt_pso.opt_rmo.opt.i [2022-11-25 18:03:08,533 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:03:08,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:03:08,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:03:08,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:03:08,630 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:03:08,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-11-25 18:03:08,798 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-11-25 18:03:08,802 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:03:08,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-25 18:03:08,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-11-25 18:03:08,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-11-25 18:03:08,827 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:03:08,855 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 133 transitions, 278 flow [2022-11-25 18:03:08,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 133 transitions, 278 flow [2022-11-25 18:03:08,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 278 flow [2022-11-25 18:03:08,947 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-11-25 18:03:08,949 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:03:08,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-25 18:03:08,954 INFO L119 LiptonReduction]: Number of co-enabled transitions 3218 [2022-11-25 18:03:14,746 INFO L134 LiptonReduction]: Checked pairs total: 9222 [2022-11-25 18:03:14,747 INFO L136 LiptonReduction]: Total number of compositions: 119 [2022-11-25 18:03:14,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:03:14,774 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;@4ba90615, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:03:14,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-25 18:03:14,783 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-11-25 18:03:14,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:03:14,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:14,785 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:14,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash -935449818, now seen corresponding path program 1 times [2022-11-25 18:03:14,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:14,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027531915] [2022-11-25 18:03:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:14,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:15,337 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 18:03:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:15,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027531915] [2022-11-25 18:03:15,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027531915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:15,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:15,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:03:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701430766] [2022-11-25 18:03:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:15,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:15,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:15,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:15,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 256 [2022-11-25 18:03:15,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 18:03:15,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:15,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 256 [2022-11-25 18:03:15,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:16,153 INFO L130 PetriNetUnfolder]: 2855/4138 cut-off events. [2022-11-25 18:03:16,154 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-25 18:03:16,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8214 conditions, 4138 events. 2855/4138 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 21622 event pairs, 785 based on Foata normal form. 0/3894 useless extension candidates. Maximal degree in co-relation 8202. Up to 3103 conditions per place. [2022-11-25 18:03:16,189 INFO L137 encePairwiseOnDemand]: 252/256 looper letters, 33 selfloop transitions, 2 changer transitions 2/42 dead transitions. [2022-11-25 18:03:16,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 173 flow [2022-11-25 18:03:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2022-11-25 18:03:16,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5325520833333334 [2022-11-25 18:03:16,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2022-11-25 18:03:16,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2022-11-25 18:03:16,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:16,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2022-11-25 18:03:16,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 18:03:16,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 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 18:03:16,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 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 18:03:16,237 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 409 transitions. [2022-11-25 18:03:16,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 173 flow [2022-11-25 18:03:16,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:03:16,248 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 66 flow [2022-11-25 18:03:16,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-11-25 18:03:16,256 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2022-11-25 18:03:16,257 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 66 flow [2022-11-25 18:03:16,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 18:03:16,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:16,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:16,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:03:16,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:16,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash -599130771, now seen corresponding path program 1 times [2022-11-25 18:03:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:16,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078709325] [2022-11-25 18:03:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:16,668 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 18:03:16,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:16,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078709325] [2022-11-25 18:03:16,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078709325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:16,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:16,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:03:16,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558050796] [2022-11-25 18:03:16,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:16,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:16,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:16,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 256 [2022-11-25 18:03:16,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 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 18:03:16,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:16,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 256 [2022-11-25 18:03:16,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:18,976 INFO L130 PetriNetUnfolder]: 12556/17185 cut-off events. [2022-11-25 18:03:18,976 INFO L131 PetriNetUnfolder]: For 752/752 co-relation queries the response was YES. [2022-11-25 18:03:19,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35532 conditions, 17185 events. 12556/17185 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 88701 event pairs, 4324 based on Foata normal form. 484/17669 useless extension candidates. Maximal degree in co-relation 35522. Up to 10805 conditions per place. [2022-11-25 18:03:19,097 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 40 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2022-11-25 18:03:19,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 214 flow [2022-11-25 18:03:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-11-25 18:03:19,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4986979166666667 [2022-11-25 18:03:19,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-11-25 18:03:19,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-11-25 18:03:19,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:19,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-11-25 18:03:19,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 18:03:19,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 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 18:03:19,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 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 18:03:19,104 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 3 states and 383 transitions. [2022-11-25 18:03:19,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 214 flow [2022-11-25 18:03:19,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:03:19,110 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 132 flow [2022-11-25 18:03:19,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2022-11-25 18:03:19,112 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2022-11-25 18:03:19,112 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 132 flow [2022-11-25 18:03:19,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 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 18:03:19,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:19,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:19,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:03:19,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1393186116, now seen corresponding path program 1 times [2022-11-25 18:03:19,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:19,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531539901] [2022-11-25 18:03:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:19,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:19,435 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 18:03:19,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:19,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531539901] [2022-11-25 18:03:19,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531539901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:19,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:19,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:19,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616363292] [2022-11-25 18:03:19,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:19,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:19,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 256 [2022-11-25 18:03:19,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 18:03:19,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:19,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 256 [2022-11-25 18:03:19,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:21,770 INFO L130 PetriNetUnfolder]: 12350/16907 cut-off events. [2022-11-25 18:03:21,770 INFO L131 PetriNetUnfolder]: For 7509/7509 co-relation queries the response was YES. [2022-11-25 18:03:21,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44467 conditions, 16907 events. 12350/16907 cut-off events. For 7509/7509 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 86426 event pairs, 966 based on Foata normal form. 32/16939 useless extension candidates. Maximal degree in co-relation 44455. Up to 10049 conditions per place. [2022-11-25 18:03:21,877 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 53 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2022-11-25 18:03:21,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 364 flow [2022-11-25 18:03:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:03:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:03:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2022-11-25 18:03:21,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.494140625 [2022-11-25 18:03:21,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 506 transitions. [2022-11-25 18:03:21,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 506 transitions. [2022-11-25 18:03:21,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:21,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 506 transitions. [2022-11-25 18:03:21,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 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 18:03:21,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:21,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:21,885 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 132 flow. Second operand 4 states and 506 transitions. [2022-11-25 18:03:21,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 364 flow [2022-11-25 18:03:21,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:03:21,921 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 212 flow [2022-11-25 18:03:21,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2022-11-25 18:03:21,923 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2022-11-25 18:03:21,923 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 212 flow [2022-11-25 18:03:21,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 18:03:21,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:21,924 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:21,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:03:21,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1393187170, now seen corresponding path program 1 times [2022-11-25 18:03:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:21,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468146616] [2022-11-25 18:03:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:21,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:22,146 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 18:03:22,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:22,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468146616] [2022-11-25 18:03:22,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468146616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:22,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:22,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:22,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855210668] [2022-11-25 18:03:22,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:22,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:22,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:22,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:22,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 256 [2022-11-25 18:03:22,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 18:03:22,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:22,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 256 [2022-11-25 18:03:22,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:24,487 INFO L130 PetriNetUnfolder]: 12050/16507 cut-off events. [2022-11-25 18:03:24,488 INFO L131 PetriNetUnfolder]: For 14828/14828 co-relation queries the response was YES. [2022-11-25 18:03:24,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47522 conditions, 16507 events. 12050/16507 cut-off events. For 14828/14828 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 84742 event pairs, 2371 based on Foata normal form. 50/16557 useless extension candidates. Maximal degree in co-relation 47507. Up to 9909 conditions per place. [2022-11-25 18:03:24,598 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 64 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2022-11-25 18:03:24,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 84 transitions, 532 flow [2022-11-25 18:03:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:03:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:03:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 514 transitions. [2022-11-25 18:03:24,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.501953125 [2022-11-25 18:03:24,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 514 transitions. [2022-11-25 18:03:24,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 514 transitions. [2022-11-25 18:03:24,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:24,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 514 transitions. [2022-11-25 18:03:24,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 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 18:03:24,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:24,609 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:24,609 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 212 flow. Second operand 4 states and 514 transitions. [2022-11-25 18:03:24,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 84 transitions, 532 flow [2022-11-25 18:03:24,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 84 transitions, 532 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:03:24,659 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 378 flow [2022-11-25 18:03:24,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2022-11-25 18:03:24,661 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2022-11-25 18:03:24,661 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 378 flow [2022-11-25 18:03:24,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 18:03:24,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:24,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:24,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:03:24,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash -239099089, now seen corresponding path program 1 times [2022-11-25 18:03:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:24,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517290223] [2022-11-25 18:03:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:24,908 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 18:03:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:24,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517290223] [2022-11-25 18:03:24,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517290223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:24,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:24,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:24,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631379634] [2022-11-25 18:03:24,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:24,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:24,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:24,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 256 [2022-11-25 18:03:24,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 18:03:24,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:24,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 256 [2022-11-25 18:03:24,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:26,789 INFO L130 PetriNetUnfolder]: 11268/15447 cut-off events. [2022-11-25 18:03:26,790 INFO L131 PetriNetUnfolder]: For 36567/36567 co-relation queries the response was YES. [2022-11-25 18:03:26,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51123 conditions, 15447 events. 11268/15447 cut-off events. For 36567/36567 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 79569 event pairs, 2505 based on Foata normal form. 162/15609 useless extension candidates. Maximal degree in co-relation 51103. Up to 6809 conditions per place. [2022-11-25 18:03:26,876 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 81 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2022-11-25 18:03:26,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 95 transitions, 766 flow [2022-11-25 18:03:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:03:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:03:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 510 transitions. [2022-11-25 18:03:26,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.498046875 [2022-11-25 18:03:26,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 510 transitions. [2022-11-25 18:03:26,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 510 transitions. [2022-11-25 18:03:26,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:26,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 510 transitions. [2022-11-25 18:03:26,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 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 18:03:26,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:26,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:26,885 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 378 flow. Second operand 4 states and 510 transitions. [2022-11-25 18:03:26,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 95 transitions, 766 flow [2022-11-25 18:03:26,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 766 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:03:26,929 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 546 flow [2022-11-25 18:03:26,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2022-11-25 18:03:26,930 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2022-11-25 18:03:26,930 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 546 flow [2022-11-25 18:03:26,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 18:03:26,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:26,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:26,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:03:26,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash -267727983, now seen corresponding path program 1 times [2022-11-25 18:03:26,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:26,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390102784] [2022-11-25 18:03:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:26,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,085 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 18:03:27,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:27,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390102784] [2022-11-25 18:03:27,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390102784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:27,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:27,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:27,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440002814] [2022-11-25 18:03:27,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:27,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:27,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:27,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:27,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:27,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 256 [2022-11-25 18:03:27,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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 18:03:27,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:27,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 256 [2022-11-25 18:03:27,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:28,663 INFO L130 PetriNetUnfolder]: 10830/14847 cut-off events. [2022-11-25 18:03:28,663 INFO L131 PetriNetUnfolder]: For 57230/57230 co-relation queries the response was YES. [2022-11-25 18:03:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54020 conditions, 14847 events. 10830/14847 cut-off events. For 57230/57230 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 73352 event pairs, 2585 based on Foata normal form. 96/14943 useless extension candidates. Maximal degree in co-relation 53995. Up to 6293 conditions per place. [2022-11-25 18:03:28,772 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 78 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2022-11-25 18:03:28,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 958 flow [2022-11-25 18:03:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:03:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:03:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 501 transitions. [2022-11-25 18:03:28,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4892578125 [2022-11-25 18:03:28,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 501 transitions. [2022-11-25 18:03:28,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 501 transitions. [2022-11-25 18:03:28,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:28,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 501 transitions. [2022-11-25 18:03:28,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 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 18:03:28,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:28,787 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 546 flow. Second operand 4 states and 501 transitions. [2022-11-25 18:03:28,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 958 flow [2022-11-25 18:03:28,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 96 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:03:28,891 INFO L231 Difference]: Finished difference. Result has 61 places, 71 transitions, 773 flow [2022-11-25 18:03:28,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=773, PETRI_PLACES=61, PETRI_TRANSITIONS=71} [2022-11-25 18:03:28,894 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2022-11-25 18:03:28,894 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 71 transitions, 773 flow [2022-11-25 18:03:28,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 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 18:03:28,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:28,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:03:28,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2006071088, now seen corresponding path program 1 times [2022-11-25 18:03:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:28,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175194757] [2022-11-25 18:03:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:28,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:29,168 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 18:03:29,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:29,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175194757] [2022-11-25 18:03:29,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175194757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:29,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:29,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:03:29,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609311330] [2022-11-25 18:03:29,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:29,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:29,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:29,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:29,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 256 [2022-11-25 18:03:29,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 71 transitions, 773 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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 18:03:29,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:29,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 256 [2022-11-25 18:03:29,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:31,019 INFO L130 PetriNetUnfolder]: 6684/10052 cut-off events. [2022-11-25 18:03:31,020 INFO L131 PetriNetUnfolder]: For 42335/44253 co-relation queries the response was YES. [2022-11-25 18:03:31,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34048 conditions, 10052 events. 6684/10052 cut-off events. For 42335/44253 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 64088 event pairs, 1122 based on Foata normal form. 1229/10827 useless extension candidates. Maximal degree in co-relation 34019. Up to 6155 conditions per place. [2022-11-25 18:03:31,122 INFO L137 encePairwiseOnDemand]: 249/256 looper letters, 116 selfloop transitions, 10 changer transitions 0/158 dead transitions. [2022-11-25 18:03:31,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 158 transitions, 1785 flow [2022-11-25 18:03:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:03:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:03:31,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 654 transitions. [2022-11-25 18:03:31,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5109375 [2022-11-25 18:03:31,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 654 transitions. [2022-11-25 18:03:31,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 654 transitions. [2022-11-25 18:03:31,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:31,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 654 transitions. [2022-11-25 18:03:31,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 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 18:03:31,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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 18:03:31,132 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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 18:03:31,132 INFO L175 Difference]: Start difference. First operand has 61 places, 71 transitions, 773 flow. Second operand 5 states and 654 transitions. [2022-11-25 18:03:31,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 158 transitions, 1785 flow [2022-11-25 18:03:31,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 158 transitions, 1780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:03:31,186 INFO L231 Difference]: Finished difference. Result has 67 places, 80 transitions, 843 flow [2022-11-25 18:03:31,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=843, PETRI_PLACES=67, PETRI_TRANSITIONS=80} [2022-11-25 18:03:31,187 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2022-11-25 18:03:31,188 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 80 transitions, 843 flow [2022-11-25 18:03:31,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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 18:03:31,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:31,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:31,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:03:31,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:31,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1655109520, now seen corresponding path program 1 times [2022-11-25 18:03:31,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:31,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479178365] [2022-11-25 18:03:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:31,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:31,456 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 18:03:31,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479178365] [2022-11-25 18:03:31,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479178365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:31,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:31,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:03:31,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289219171] [2022-11-25 18:03:31,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:31,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:03:31,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:03:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:03:31,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 256 [2022-11-25 18:03:31,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 843 flow. Second operand has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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 18:03:31,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:31,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 256 [2022-11-25 18:03:31,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:32,930 INFO L130 PetriNetUnfolder]: 5431/8451 cut-off events. [2022-11-25 18:03:32,930 INFO L131 PetriNetUnfolder]: For 38304/40182 co-relation queries the response was YES. [2022-11-25 18:03:32,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34571 conditions, 8451 events. 5431/8451 cut-off events. For 38304/40182 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 55419 event pairs, 488 based on Foata normal form. 1097/9233 useless extension candidates. Maximal degree in co-relation 34538. Up to 2746 conditions per place. [2022-11-25 18:03:33,006 INFO L137 encePairwiseOnDemand]: 249/256 looper letters, 151 selfloop transitions, 19 changer transitions 3/205 dead transitions. [2022-11-25 18:03:33,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 205 transitions, 2351 flow [2022-11-25 18:03:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:03:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:03:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 917 transitions. [2022-11-25 18:03:33,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2022-11-25 18:03:33,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 917 transitions. [2022-11-25 18:03:33,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 917 transitions. [2022-11-25 18:03:33,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:33,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 917 transitions. [2022-11-25 18:03:33,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 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 18:03:33,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 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 18:03:33,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 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 18:03:33,020 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 843 flow. Second operand 7 states and 917 transitions. [2022-11-25 18:03:33,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 205 transitions, 2351 flow [2022-11-25 18:03:33,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 205 transitions, 2346 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:03:33,109 INFO L231 Difference]: Finished difference. Result has 75 places, 89 transitions, 972 flow [2022-11-25 18:03:33,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=972, PETRI_PLACES=75, PETRI_TRANSITIONS=89} [2022-11-25 18:03:33,110 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2022-11-25 18:03:33,111 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 89 transitions, 972 flow [2022-11-25 18:03:33,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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 18:03:33,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:33,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:33,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:03:33,112 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:33,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash -963939845, now seen corresponding path program 1 times [2022-11-25 18:03:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:33,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124705745] [2022-11-25 18:03:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:33,427 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 18:03:33,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:33,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124705745] [2022-11-25 18:03:33,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124705745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:33,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:33,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:03:33,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027666896] [2022-11-25 18:03:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:33,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:03:33,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:33,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:03:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:03:33,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 256 [2022-11-25 18:03:33,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 89 transitions, 972 flow. Second operand has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 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 18:03:33,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:33,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 256 [2022-11-25 18:03:33,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:34,953 INFO L130 PetriNetUnfolder]: 5033/7843 cut-off events. [2022-11-25 18:03:34,953 INFO L131 PetriNetUnfolder]: For 42054/44156 co-relation queries the response was YES. [2022-11-25 18:03:34,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36327 conditions, 7843 events. 5033/7843 cut-off events. For 42054/44156 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 51298 event pairs, 391 based on Foata normal form. 812/8365 useless extension candidates. Maximal degree in co-relation 36290. Up to 2608 conditions per place. [2022-11-25 18:03:35,028 INFO L137 encePairwiseOnDemand]: 249/256 looper letters, 163 selfloop transitions, 28 changer transitions 13/236 dead transitions. [2022-11-25 18:03:35,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 236 transitions, 2750 flow [2022-11-25 18:03:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:03:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:03:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1178 transitions. [2022-11-25 18:03:35,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5112847222222222 [2022-11-25 18:03:35,034 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1178 transitions. [2022-11-25 18:03:35,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1178 transitions. [2022-11-25 18:03:35,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:35,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1178 transitions. [2022-11-25 18:03:35,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.88888888888889) internal successors, (1178), 9 states have internal predecessors, (1178), 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 18:03:35,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 256.0) internal successors, (2560), 10 states have internal predecessors, (2560), 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 18:03:35,045 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 256.0) internal successors, (2560), 10 states have internal predecessors, (2560), 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 18:03:35,045 INFO L175 Difference]: Start difference. First operand has 75 places, 89 transitions, 972 flow. Second operand 9 states and 1178 transitions. [2022-11-25 18:03:35,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 236 transitions, 2750 flow [2022-11-25 18:03:35,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 236 transitions, 2700 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-25 18:03:35,548 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 1100 flow [2022-11-25 18:03:35,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1100, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2022-11-25 18:03:35,549 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2022-11-25 18:03:35,549 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 1100 flow [2022-11-25 18:03:35,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 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 18:03:35,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:35,550 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:35,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:03:35,551 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1733272794, now seen corresponding path program 1 times [2022-11-25 18:03:35,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:35,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593492044] [2022-11-25 18:03:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:35,881 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 18:03:35,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:35,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593492044] [2022-11-25 18:03:35,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593492044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:35,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:35,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:03:35,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090067673] [2022-11-25 18:03:35,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:35,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:35,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:35,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:35,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:35,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 256 [2022-11-25 18:03:35,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 1100 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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 18:03:35,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:35,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 256 [2022-11-25 18:03:35,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:37,395 INFO L130 PetriNetUnfolder]: 8927/13028 cut-off events. [2022-11-25 18:03:37,396 INFO L131 PetriNetUnfolder]: For 105254/105254 co-relation queries the response was YES. [2022-11-25 18:03:37,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68824 conditions, 13028 events. 8927/13028 cut-off events. For 105254/105254 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 74756 event pairs, 1018 based on Foata normal form. 11/13039 useless extension candidates. Maximal degree in co-relation 68784. Up to 5901 conditions per place. [2022-11-25 18:03:37,467 INFO L137 encePairwiseOnDemand]: 245/256 looper letters, 115 selfloop transitions, 70 changer transitions 60/245 dead transitions. [2022-11-25 18:03:37,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 245 transitions, 3042 flow [2022-11-25 18:03:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:03:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:03:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 636 transitions. [2022-11-25 18:03:37,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.496875 [2022-11-25 18:03:37,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 636 transitions. [2022-11-25 18:03:37,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 636 transitions. [2022-11-25 18:03:37,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:37,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 636 transitions. [2022-11-25 18:03:37,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 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 18:03:37,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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 18:03:37,476 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 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 18:03:37,476 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 1100 flow. Second operand 5 states and 636 transitions. [2022-11-25 18:03:37,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 245 transitions, 3042 flow [2022-11-25 18:03:38,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 245 transitions, 2701 flow, removed 120 selfloop flow, removed 4 redundant places. [2022-11-25 18:03:38,443 INFO L231 Difference]: Finished difference. Result has 86 places, 120 transitions, 1710 flow [2022-11-25 18:03:38,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1710, PETRI_PLACES=86, PETRI_TRANSITIONS=120} [2022-11-25 18:03:38,444 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2022-11-25 18:03:38,444 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 120 transitions, 1710 flow [2022-11-25 18:03:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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 18:03:38,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:38,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:03:38,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -973100720, now seen corresponding path program 2 times [2022-11-25 18:03:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:38,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803913018] [2022-11-25 18:03:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:38,657 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 18:03:38,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:38,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803913018] [2022-11-25 18:03:38,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803913018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:38,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:38,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:03:38,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453762671] [2022-11-25 18:03:38,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:38,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:03:38,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:38,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:03:38,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:03:38,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 256 [2022-11-25 18:03:38,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 120 transitions, 1710 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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 18:03:38,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:38,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 256 [2022-11-25 18:03:38,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:39,924 INFO L130 PetriNetUnfolder]: 4322/6511 cut-off events. [2022-11-25 18:03:39,924 INFO L131 PetriNetUnfolder]: For 55399/55399 co-relation queries the response was YES. [2022-11-25 18:03:39,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35304 conditions, 6511 events. 4322/6511 cut-off events. For 55399/55399 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 34604 event pairs, 424 based on Foata normal form. 11/6522 useless extension candidates. Maximal degree in co-relation 35260. Up to 2067 conditions per place. [2022-11-25 18:03:39,963 INFO L137 encePairwiseOnDemand]: 245/256 looper letters, 107 selfloop transitions, 66 changer transitions 52/225 dead transitions. [2022-11-25 18:03:39,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 225 transitions, 2930 flow [2022-11-25 18:03:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:03:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:03:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 759 transitions. [2022-11-25 18:03:39,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.494140625 [2022-11-25 18:03:39,967 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 759 transitions. [2022-11-25 18:03:39,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 759 transitions. [2022-11-25 18:03:39,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:39,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 759 transitions. [2022-11-25 18:03:39,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.5) internal successors, (759), 6 states have internal predecessors, (759), 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 18:03:39,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 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 18:03:39,973 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 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 18:03:39,974 INFO L175 Difference]: Start difference. First operand has 86 places, 120 transitions, 1710 flow. Second operand 6 states and 759 transitions. [2022-11-25 18:03:39,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 225 transitions, 2930 flow [2022-11-25 18:03:40,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 225 transitions, 2856 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-11-25 18:03:40,153 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 1610 flow [2022-11-25 18:03:40,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1610, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2022-11-25 18:03:40,154 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2022-11-25 18:03:40,155 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 1610 flow [2022-11-25 18:03:40,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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 18:03:40,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:40,155 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:40,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:03:40,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:40,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:40,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1452466592, now seen corresponding path program 3 times [2022-11-25 18:03:40,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:40,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869799339] [2022-11-25 18:03:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:40,373 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 18:03:40,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:40,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869799339] [2022-11-25 18:03:40,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869799339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:40,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:40,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:03:40,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465775430] [2022-11-25 18:03:40,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:40,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:40,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:40,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:40,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 256 [2022-11-25 18:03:40,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 107 transitions, 1610 flow. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 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 18:03:40,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:40,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 256 [2022-11-25 18:03:40,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:41,298 INFO L130 PetriNetUnfolder]: 4245/6666 cut-off events. [2022-11-25 18:03:41,299 INFO L131 PetriNetUnfolder]: For 57090/57090 co-relation queries the response was YES. [2022-11-25 18:03:41,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35031 conditions, 6666 events. 4245/6666 cut-off events. For 57090/57090 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 38158 event pairs, 685 based on Foata normal form. 11/6677 useless extension candidates. Maximal degree in co-relation 34989. Up to 2932 conditions per place. [2022-11-25 18:03:41,333 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 91 selfloop transitions, 54 changer transitions 34/179 dead transitions. [2022-11-25 18:03:41,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 179 transitions, 2611 flow [2022-11-25 18:03:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:03:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:03:41,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 516 transitions. [2022-11-25 18:03:41,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.50390625 [2022-11-25 18:03:41,336 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 516 transitions. [2022-11-25 18:03:41,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 516 transitions. [2022-11-25 18:03:41,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:41,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 516 transitions. [2022-11-25 18:03:41,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.0) internal successors, (516), 4 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 18:03:41,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:41,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:41,341 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 1610 flow. Second operand 4 states and 516 transitions. [2022-11-25 18:03:41,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 179 transitions, 2611 flow [2022-11-25 18:03:41,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 179 transitions, 2473 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-25 18:03:41,537 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 1597 flow [2022-11-25 18:03:41,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1597, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2022-11-25 18:03:41,540 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2022-11-25 18:03:41,541 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 1597 flow [2022-11-25 18:03:41,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 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 18:03:41,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:41,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:41,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:03:41,541 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:41,542 INFO L85 PathProgramCache]: Analyzing trace with hash -518171300, now seen corresponding path program 4 times [2022-11-25 18:03:41,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:41,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395321877] [2022-11-25 18:03:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:41,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:41,801 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 18:03:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:41,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395321877] [2022-11-25 18:03:41,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395321877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:41,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:41,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:03:41,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120336273] [2022-11-25 18:03:41,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:41,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:41,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:41,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 256 [2022-11-25 18:03:41,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 1597 flow. Second operand has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 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 18:03:41,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:41,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 256 [2022-11-25 18:03:41,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:42,538 INFO L130 PetriNetUnfolder]: 2054/3475 cut-off events. [2022-11-25 18:03:42,538 INFO L131 PetriNetUnfolder]: For 27150/27738 co-relation queries the response was YES. [2022-11-25 18:03:42,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16428 conditions, 3475 events. 2054/3475 cut-off events. For 27150/27738 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21798 event pairs, 332 based on Foata normal form. 194/3563 useless extension candidates. Maximal degree in co-relation 16385. Up to 1308 conditions per place. [2022-11-25 18:03:42,551 INFO L137 encePairwiseOnDemand]: 249/256 looper letters, 44 selfloop transitions, 18 changer transitions 109/186 dead transitions. [2022-11-25 18:03:42,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 186 transitions, 2976 flow [2022-11-25 18:03:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:03:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:03:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2022-11-25 18:03:42,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.50048828125 [2022-11-25 18:03:42,555 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2022-11-25 18:03:42,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2022-11-25 18:03:42,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:42,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2022-11-25 18:03:42,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 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 18:03:42,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 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 18:03:42,562 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 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 18:03:42,562 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 1597 flow. Second operand 8 states and 1025 transitions. [2022-11-25 18:03:42,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 186 transitions, 2976 flow [2022-11-25 18:03:42,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 186 transitions, 2819 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-11-25 18:03:42,655 INFO L231 Difference]: Finished difference. Result has 88 places, 53 transitions, 572 flow [2022-11-25 18:03:42,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=88, PETRI_TRANSITIONS=53} [2022-11-25 18:03:42,656 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2022-11-25 18:03:42,656 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 53 transitions, 572 flow [2022-11-25 18:03:42,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 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 18:03:42,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:42,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:42,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:03:42,658 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash -66338349, now seen corresponding path program 1 times [2022-11-25 18:03:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:42,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009385926] [2022-11-25 18:03:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:42,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:42,881 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 18:03:42,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:42,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009385926] [2022-11-25 18:03:42,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009385926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:42,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:42,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:03:42,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869484541] [2022-11-25 18:03:42,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:42,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:42,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:42,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 256 [2022-11-25 18:03:42,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 53 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 18:03:42,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:42,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 256 [2022-11-25 18:03:42,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:43,234 INFO L130 PetriNetUnfolder]: 878/1519 cut-off events. [2022-11-25 18:03:43,234 INFO L131 PetriNetUnfolder]: For 13285/13285 co-relation queries the response was YES. [2022-11-25 18:03:43,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8097 conditions, 1519 events. 878/1519 cut-off events. For 13285/13285 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7318 event pairs, 213 based on Foata normal form. 1/1520 useless extension candidates. Maximal degree in co-relation 8053. Up to 827 conditions per place. [2022-11-25 18:03:43,242 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 49 selfloop transitions, 5 changer transitions 43/97 dead transitions. [2022-11-25 18:03:43,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 97 transitions, 1125 flow [2022-11-25 18:03:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:03:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:03:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2022-11-25 18:03:43,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48828125 [2022-11-25 18:03:43,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2022-11-25 18:03:43,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2022-11-25 18:03:43,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:43,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2022-11-25 18:03:43,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 18:03:43,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:43,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 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 18:03:43,249 INFO L175 Difference]: Start difference. First operand has 88 places, 53 transitions, 572 flow. Second operand 4 states and 500 transitions. [2022-11-25 18:03:43,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 97 transitions, 1125 flow [2022-11-25 18:03:43,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 808 flow, removed 48 selfloop flow, removed 20 redundant places. [2022-11-25 18:03:43,276 INFO L231 Difference]: Finished difference. Result has 70 places, 39 transitions, 233 flow [2022-11-25 18:03:43,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=70, PETRI_TRANSITIONS=39} [2022-11-25 18:03:43,277 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2022-11-25 18:03:43,277 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 39 transitions, 233 flow [2022-11-25 18:03:43,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 18:03:43,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:43,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:43,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:03:43,280 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:43,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1568555265, now seen corresponding path program 2 times [2022-11-25 18:03:43,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:43,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935045415] [2022-11-25 18:03:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:43,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:44,148 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 18:03:44,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:44,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935045415] [2022-11-25 18:03:44,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935045415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:44,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:44,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:03:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984299526] [2022-11-25 18:03:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:44,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:44,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:44,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2022-11-25 18:03:44,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 39 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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 18:03:44,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:44,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2022-11-25 18:03:44,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:44,586 INFO L130 PetriNetUnfolder]: 257/464 cut-off events. [2022-11-25 18:03:44,586 INFO L131 PetriNetUnfolder]: For 1537/1537 co-relation queries the response was YES. [2022-11-25 18:03:44,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 464 events. 257/464 cut-off events. For 1537/1537 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1713 event pairs, 29 based on Foata normal form. 1/465 useless extension candidates. Maximal degree in co-relation 1750. Up to 223 conditions per place. [2022-11-25 18:03:44,588 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 49 selfloop transitions, 7 changer transitions 30/86 dead transitions. [2022-11-25 18:03:44,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 673 flow [2022-11-25 18:03:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:03:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:03:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 903 transitions. [2022-11-25 18:03:44,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44091796875 [2022-11-25 18:03:44,593 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 903 transitions. [2022-11-25 18:03:44,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 903 transitions. [2022-11-25 18:03:44,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:44,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 903 transitions. [2022-11-25 18:03:44,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.875) internal successors, (903), 8 states have internal predecessors, (903), 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 18:03:44,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 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 18:03:44,600 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 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 18:03:44,601 INFO L175 Difference]: Start difference. First operand has 70 places, 39 transitions, 233 flow. Second operand 8 states and 903 transitions. [2022-11-25 18:03:44,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 673 flow [2022-11-25 18:03:44,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 575 flow, removed 11 selfloop flow, removed 19 redundant places. [2022-11-25 18:03:44,606 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 194 flow [2022-11-25 18:03:44,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=194, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2022-11-25 18:03:44,608 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2022-11-25 18:03:44,608 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 194 flow [2022-11-25 18:03:44,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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 18:03:44,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:44,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:44,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:03:44,609 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 18:03:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash 261700647, now seen corresponding path program 3 times [2022-11-25 18:03:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:44,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019221919] [2022-11-25 18:03:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:03:44,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:03:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:03:44,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:03:44,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:03:44,822 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-11-25 18:03:44,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-25 18:03:44,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-25 18:03:44,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-11-25 18:03:44,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-11-25 18:03:44,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-11-25 18:03:44,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-25 18:03:44,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:03:44,826 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:44,833 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:03:44,833 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:03:44,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:03:44 BasicIcfg [2022-11-25 18:03:44,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:03:44,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:03:44,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:03:44,962 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:03:44,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:03:08" (3/4) ... [2022-11-25 18:03:44,964 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 18:03:45,044 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:03:45,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:03:45,045 INFO L158 Benchmark]: Toolchain (without parser) took 38195.43ms. Allocated memory was 172.0MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 126.0MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 972.3MB. Max. memory is 16.1GB. [2022-11-25 18:03:45,045 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:03:45,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 720.82ms. Allocated memory is still 172.0MB. Free memory was 126.0MB in the beginning and 98.1MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-25 18:03:45,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.13ms. Allocated memory is still 172.0MB. Free memory was 98.1MB in the beginning and 95.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:03:45,046 INFO L158 Benchmark]: Boogie Preprocessor took 66.17ms. Allocated memory is still 172.0MB. Free memory was 95.3MB in the beginning and 142.4MB in the end (delta: -47.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-11-25 18:03:45,047 INFO L158 Benchmark]: RCFGBuilder took 824.70ms. Allocated memory is still 172.0MB. Free memory was 142.4MB in the beginning and 109.0MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-25 18:03:45,047 INFO L158 Benchmark]: TraceAbstraction took 36443.15ms. Allocated memory was 172.0MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 108.3MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 935.6MB. Max. memory is 16.1GB. [2022-11-25 18:03:45,047 INFO L158 Benchmark]: Witness Printer took 83.07ms. Allocated memory is still 3.8GB. Free memory was 2.8GB in the beginning and 2.7GB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 18:03:45,049 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 720.82ms. Allocated memory is still 172.0MB. Free memory was 126.0MB in the beginning and 98.1MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.13ms. Allocated memory is still 172.0MB. Free memory was 98.1MB in the beginning and 95.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.17ms. Allocated memory is still 172.0MB. Free memory was 95.3MB in the beginning and 142.4MB in the end (delta: -47.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * RCFGBuilder took 824.70ms. Allocated memory is still 172.0MB. Free memory was 142.4MB in the beginning and 109.0MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 36443.15ms. Allocated memory was 172.0MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 108.3MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 935.6MB. Max. memory is 16.1GB. * Witness Printer took 83.07ms. Allocated memory is still 3.8GB. Free memory was 2.8GB in the beginning and 2.7GB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 144 PlacesBefore, 42 PlacesAfterwards, 133 TransitionsBefore, 30 TransitionsAfterwards, 3218 CoEnabledTransitionPairs, 8 FixpointIterations, 46 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 119 TotalNumberOfCompositions, 9222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3850, independent: 3596, independent conditional: 0, independent unconditional: 3596, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2177, independent: 2111, independent conditional: 0, independent unconditional: 2111, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2177, independent: 2078, independent conditional: 0, independent unconditional: 2078, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 99, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 517, independent: 107, independent conditional: 0, independent unconditional: 107, dependent: 410, dependent conditional: 0, dependent unconditional: 410, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3850, independent: 1485, independent conditional: 0, independent unconditional: 1485, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 2177, unknown conditional: 0, unknown unconditional: 2177] , Statistics on independence cache: Total cache size (in pairs): 184, Positive cache size: 157, Positive conditional cache size: 0, Positive unconditional cache size: 157, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p1_EBX = 0; [L716] 0 int __unbuffered_p3_EAX = 0; [L718] 0 int __unbuffered_p3_EBX = 0; [L720] 0 int a = 0; [L721] 0 _Bool main$tmp_guard0; [L722] 0 _Bool main$tmp_guard1; [L724] 0 int x = 0; [L726] 0 int y = 0; [L727] 0 _Bool y$flush_delayed; [L728] 0 int y$mem_tmp; [L729] 0 _Bool y$r_buff0_thd0; [L730] 0 _Bool y$r_buff0_thd1; [L731] 0 _Bool y$r_buff0_thd2; [L732] 0 _Bool y$r_buff0_thd3; [L733] 0 _Bool y$r_buff0_thd4; [L734] 0 _Bool y$r_buff1_thd0; [L735] 0 _Bool y$r_buff1_thd1; [L736] 0 _Bool y$r_buff1_thd2; [L737] 0 _Bool y$r_buff1_thd3; [L738] 0 _Bool y$r_buff1_thd4; [L739] 0 _Bool y$read_delayed; [L740] 0 int *y$read_delayed_var; [L741] 0 int y$w_buff0; [L742] 0 _Bool y$w_buff0_used; [L743] 0 int y$w_buff1; [L744] 0 _Bool y$w_buff1_used; [L746] 0 int z = 0; [L747] 0 _Bool weak$$choice0; [L748] 0 _Bool weak$$choice2; [L859] 0 pthread_t t605; [L860] FCALL, FORK 0 pthread_create(&t605, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t605, ((void *)0), P0, ((void *)0))=-4, t605={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L861] 0 pthread_t t606; [L862] FCALL, FORK 0 pthread_create(&t606, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t606, ((void *)0), P1, ((void *)0))=-3, t605={5:0}, t606={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L863] 0 pthread_t t607; [L864] FCALL, FORK 0 pthread_create(&t607, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t607, ((void *)0), P2, ((void *)0))=-2, t605={5:0}, t606={6:0}, t607={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L865] 0 pthread_t t608; [L866] FCALL, FORK 0 pthread_create(&t608, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t608, ((void *)0), P3, ((void *)0))=-1, t605={5:0}, t606={6:0}, t607={7:0}, t608={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L798] 3 y$w_buff1 = y$w_buff0 [L799] 3 y$w_buff0 = 1 [L800] 3 y$w_buff1_used = y$w_buff0_used [L801] 3 y$w_buff0_used = (_Bool)1 [L802] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L802] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L803] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L804] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L805] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L806] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L807] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L808] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L811] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L828] 4 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L831] 4 __unbuffered_p3_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L834] 4 __unbuffered_p3_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L752] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L755] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L767] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L837] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L838] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L839] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L840] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L841] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L770] 2 __unbuffered_p1_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L773] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L774] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L775] 2 y$flush_delayed = weak$$choice2 [L776] 2 y$mem_tmp = y [L777] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L778] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L779] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L780] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L781] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L782] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L783] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L784] 2 __unbuffered_p1_EBX = y [L785] 2 y = y$flush_delayed ? y$mem_tmp : y [L786] 2 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L814] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L815] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L816] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L817] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L818] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L821] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L823] 3 return 0; [L844] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L846] 4 return 0; [L760] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 1 return 0; [L791] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L793] 2 return 0; [L868] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L870] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L870] RET 0 assume_abort_if_not(main$tmp_guard0) [L872] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L873] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L874] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L875] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L876] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t605={5:0}, t606={6:0}, t607={7:0}, t608={3:0}, weak$$choice0=49, weak$$choice2=255, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L879] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 2 && __unbuffered_p1_EBX == 0 && __unbuffered_p3_EAX == 2 && __unbuffered_p3_EBX == 0) [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, __unbuffered_p3_EAX=2, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 860]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 866]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 864]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 173 locations, 7 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: 36.2s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1022 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 787 mSDsluCounter, 458 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 297 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1662 IncrementalHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 161 mSDtfsCounter, 1662 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1710occurred in iteration=10, InterpolantAutomatonStates: 78, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 253 ConstructedInterpolants, 0 QuantifiedInterpolants, 1863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-25 18:03:45,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adef101-5611-4f2d-ade7-26a276bfaa10/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE