./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8 --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 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c --- 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-2329fc7 [2022-12-13 22:04:30,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:04:30,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:04:30,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:04:30,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:04:30,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:04:30,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:04:30,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:04:30,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:04:30,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:04:30,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:04:30,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:04:30,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:04:30,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:04:30,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:04:30,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:04:30,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:04:30,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:04:30,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:04:30,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:04:30,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:04:30,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:04:30,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:04:30,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:04:30,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:04:30,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:04:30,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:04:30,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:04:30,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:04:30,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:04:30,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:04:30,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:04:30,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:04:30,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:04:30,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:04:30,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:04:30,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:04:30,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:04:30,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:04:30,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:04:30,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:04:30,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:04:30,090 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:04:30,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:04:30,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:04:30,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:04:30,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:04:30,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:04:30,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:04:30,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:04:30,092 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:04:30,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:04:30,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:04:30,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:04:30,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:04:30,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:04:30,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:04:30,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:04:30,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:04:30,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:04:30,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:04:30,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:04:30,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:04:30,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:04:30,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:04:30,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:04:30,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:04:30,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:04:30,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:04:30,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:04:30,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:04:30,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:04:30,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:04:30,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:04:30,095 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:04:30,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:04:30,096 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:04:30,096 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_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c [2022-12-13 22:04:30,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:04:30,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:04:30,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:04:30,310 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:04:30,311 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:04:30,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 22:04:32,971 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:04:33,146 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:04:33,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 22:04:33,156 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/data/bca35fd0d/97ae07fad1054fba9d9fa4019ea7bb64/FLAGb18b3f9f0 [2022-12-13 22:04:33,170 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/data/bca35fd0d/97ae07fad1054fba9d9fa4019ea7bb64 [2022-12-13 22:04:33,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:04:33,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:04:33,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:04:33,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:04:33,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:04:33,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ae0996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33, skipping insertion in model container [2022-12-13 22:04:33,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:04:33,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:04:33,356 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_4da27751-dbbb-4d65-ad2a-b56a4339033c/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 22:04:33,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:04:33,476 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:04:33,488 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_4da27751-dbbb-4d65-ad2a-b56a4339033c/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 22:04:33,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:04:33,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:04:33,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:04:33,559 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:04:33,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33 WrapperNode [2022-12-13 22:04:33,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:04:33,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:04:33,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:04:33,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:04:33,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,599 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-13 22:04:33,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:04:33,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:04:33,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:04:33,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:04:33,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,616 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:04:33,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:04:33,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:04:33,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:04:33,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (1/1) ... [2022-12-13 22:04:33,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:04:33,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:04:33,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:04:33,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:04:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:04:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 22:04:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:04:33,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:04:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:04:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 22:04:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 22:04:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 22:04:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 22:04:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 22:04:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 22:04:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:04:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 22:04:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:04:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:04:33,672 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 22:04:33,766 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:04:33,767 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:04:33,898 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:04:33,902 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:04:33,903 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 22:04:33,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:04:33 BoogieIcfgContainer [2022-12-13 22:04:33,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:04:33,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:04:33,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:04:33,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:04:33,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:04:33" (1/3) ... [2022-12-13 22:04:33,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41334d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:04:33, skipping insertion in model container [2022-12-13 22:04:33,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:33" (2/3) ... [2022-12-13 22:04:33,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41334d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:04:33, skipping insertion in model container [2022-12-13 22:04:33,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:04:33" (3/3) ... [2022-12-13 22:04:33,910 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 22:04:33,917 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:04:33,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:04:33,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:04:33,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:04:33,968 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 22:04:33,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-12-13 22:04:34,034 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-12-13 22:04:34,034 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:04:34,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-12-13 22:04:34,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-12-13 22:04:34,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-12-13 22:04:34,043 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:04:34,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 74 transitions, 157 flow [2022-12-13 22:04:34,053 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 74 transitions, 157 flow [2022-12-13 22:04:34,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 74 transitions, 157 flow [2022-12-13 22:04:34,073 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-12-13 22:04:34,073 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:04:34,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 35 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-12-13 22:04:34,075 INFO L119 LiptonReduction]: Number of co-enabled transitions 1042 [2022-12-13 22:04:35,484 INFO L134 LiptonReduction]: Checked pairs total: 1904 [2022-12-13 22:04:35,484 INFO L136 LiptonReduction]: Total number of compositions: 63 [2022-12-13 22:04:35,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:04:35,499 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;@3e652907, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:04:35,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 22:04:35,502 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-13 22:04:35,502 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:04:35,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:35,503 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:35,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1960053288, now seen corresponding path program 1 times [2022-12-13 22:04:35,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:35,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050749357] [2022-12-13 22:04:35,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:35,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:35,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:35,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050749357] [2022-12-13 22:04:35,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050749357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:35,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:35,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:04:35,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644154450] [2022-12-13 22:04:35,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:35,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:04:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:04:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:04:35,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 154 [2022-12-13 22:04:35,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-12-13 22:04:35,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:35,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 154 [2022-12-13 22:04:35,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:35,905 INFO L130 PetriNetUnfolder]: 143/259 cut-off events. [2022-12-13 22:04:35,905 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 22:04:35,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 259 events. 143/259 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 982 event pairs, 53 based on Foata normal form. 9/267 useless extension candidates. Maximal degree in co-relation 519. Up to 154 conditions per place. [2022-12-13 22:04:35,908 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 17 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-12-13 22:04:35,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 89 flow [2022-12-13 22:04:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:04:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:04:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2022-12-13 22:04:35,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5865800865800865 [2022-12-13 22:04:35,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2022-12-13 22:04:35,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2022-12-13 22:04:35,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:35,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2022-12-13 22:04:35,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2022-12-13 22:04:35,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2022-12-13 22:04:35,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2022-12-13 22:04:35,928 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 271 transitions. [2022-12-13 22:04:35,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 89 flow [2022-12-13 22:04:35,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:04:35,931 INFO L231 Difference]: Finished difference. Result has 26 places, 16 transitions, 46 flow [2022-12-13 22:04:35,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2022-12-13 22:04:35,935 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2022-12-13 22:04:35,935 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 46 flow [2022-12-13 22:04:35,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-12-13 22:04:35,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:35,936 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:35,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:04:35,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash -632110443, now seen corresponding path program 1 times [2022-12-13 22:04:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:35,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915530859] [2022-12-13 22:04:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:36,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:36,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915530859] [2022-12-13 22:04:36,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915530859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:36,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:36,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:04:36,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470226845] [2022-12-13 22:04:36,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:36,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:04:36,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:04:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:04:36,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 22:04:36,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:36,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:36,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 22:04:36,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:36,186 INFO L130 PetriNetUnfolder]: 306/489 cut-off events. [2022-12-13 22:04:36,186 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-12-13 22:04:36,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 489 events. 306/489 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1745 event pairs, 34 based on Foata normal form. 12/501 useless extension candidates. Maximal degree in co-relation 1088. Up to 297 conditions per place. [2022-12-13 22:04:36,191 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 37 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2022-12-13 22:04:36,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 217 flow [2022-12-13 22:04:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:04:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:04:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-12-13 22:04:36,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623376623376624 [2022-12-13 22:04:36,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-12-13 22:04:36,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-12-13 22:04:36,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:36,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-12-13 22:04:36,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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) [2022-12-13 22:04:36,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2022-12-13 22:04:36,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2022-12-13 22:04:36,200 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 46 flow. Second operand 5 states and 433 transitions. [2022-12-13 22:04:36,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 217 flow [2022-12-13 22:04:36,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 46 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:04:36,201 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 105 flow [2022-12-13 22:04:36,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2022-12-13 22:04:36,202 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2022-12-13 22:04:36,202 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 105 flow [2022-12-13 22:04:36,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:36,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:36,203 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:36,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:04:36,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:36,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1879399595, now seen corresponding path program 1 times [2022-12-13 22:04:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:36,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110548868] [2022-12-13 22:04:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:36,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:36,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:36,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110548868] [2022-12-13 22:04:36,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110548868] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:36,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:36,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:04:36,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523617032] [2022-12-13 22:04:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:36,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:04:36,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:04:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:04:36,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 154 [2022-12-13 22:04:36,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2022-12-13 22:04:36,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:36,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 154 [2022-12-13 22:04:36,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:36,422 INFO L130 PetriNetUnfolder]: 220/403 cut-off events. [2022-12-13 22:04:36,422 INFO L131 PetriNetUnfolder]: For 522/552 co-relation queries the response was YES. [2022-12-13 22:04:36,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 403 events. 220/403 cut-off events. For 522/552 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1738 event pairs, 39 based on Foata normal form. 47/443 useless extension candidates. Maximal degree in co-relation 1133. Up to 223 conditions per place. [2022-12-13 22:04:36,424 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 38 selfloop transitions, 8 changer transitions 3/55 dead transitions. [2022-12-13 22:04:36,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 55 transitions, 334 flow [2022-12-13 22:04:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:04:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:04:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2022-12-13 22:04:36,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5701298701298702 [2022-12-13 22:04:36,427 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2022-12-13 22:04:36,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2022-12-13 22:04:36,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:36,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2022-12-13 22:04:36,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2022-12-13 22:04:36,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2022-12-13 22:04:36,435 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2022-12-13 22:04:36,435 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 105 flow. Second operand 5 states and 439 transitions. [2022-12-13 22:04:36,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 55 transitions, 334 flow [2022-12-13 22:04:36,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 55 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:04:36,438 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 158 flow [2022-12-13 22:04:36,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2022-12-13 22:04:36,439 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2022-12-13 22:04:36,439 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 158 flow [2022-12-13 22:04:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2022-12-13 22:04:36,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:36,440 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:36,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:04:36,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:36,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1343203714, now seen corresponding path program 1 times [2022-12-13 22:04:36,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:36,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731841560] [2022-12-13 22:04:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:36,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:36,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:36,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731841560] [2022-12-13 22:04:36,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731841560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:36,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:36,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:04:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967185998] [2022-12-13 22:04:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:36,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:04:36,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:04:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:04:36,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 154 [2022-12-13 22:04:36,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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) [2022-12-13 22:04:36,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:36,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 154 [2022-12-13 22:04:36,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:36,680 INFO L130 PetriNetUnfolder]: 179/355 cut-off events. [2022-12-13 22:04:36,680 INFO L131 PetriNetUnfolder]: For 807/889 co-relation queries the response was YES. [2022-12-13 22:04:36,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 355 events. 179/355 cut-off events. For 807/889 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1605 event pairs, 19 based on Foata normal form. 71/422 useless extension candidates. Maximal degree in co-relation 1249. Up to 136 conditions per place. [2022-12-13 22:04:36,682 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 42 selfloop transitions, 14 changer transitions 8/70 dead transitions. [2022-12-13 22:04:36,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 475 flow [2022-12-13 22:04:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:04:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:04:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2022-12-13 22:04:36,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5695732838589982 [2022-12-13 22:04:36,683 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2022-12-13 22:04:36,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2022-12-13 22:04:36,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:36,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2022-12-13 22:04:36,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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) [2022-12-13 22:04:36,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 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) [2022-12-13 22:04:36,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 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) [2022-12-13 22:04:36,687 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 158 flow. Second operand 7 states and 614 transitions. [2022-12-13 22:04:36,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 70 transitions, 475 flow [2022-12-13 22:04:36,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:04:36,689 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 247 flow [2022-12-13 22:04:36,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2022-12-13 22:04:36,690 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2022-12-13 22:04:36,690 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 247 flow [2022-12-13 22:04:36,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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) [2022-12-13 22:04:36,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:36,690 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:36,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:04:36,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash 291088150, now seen corresponding path program 1 times [2022-12-13 22:04:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:36,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710427495] [2022-12-13 22:04:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:36,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:36,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710427495] [2022-12-13 22:04:36,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710427495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:36,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:36,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:04:36,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047845170] [2022-12-13 22:04:36,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:36,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:04:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:36,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:04:36,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:04:36,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 22:04:36,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2022-12-13 22:04:36,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:36,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 22:04:36,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:36,886 INFO L130 PetriNetUnfolder]: 295/554 cut-off events. [2022-12-13 22:04:36,887 INFO L131 PetriNetUnfolder]: For 1632/1632 co-relation queries the response was YES. [2022-12-13 22:04:36,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 554 events. 295/554 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2594 event pairs, 28 based on Foata normal form. 6/560 useless extension candidates. Maximal degree in co-relation 2344. Up to 315 conditions per place. [2022-12-13 22:04:36,889 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 51 selfloop transitions, 13 changer transitions 28/92 dead transitions. [2022-12-13 22:04:36,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 92 transitions, 819 flow [2022-12-13 22:04:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:04:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:04:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2022-12-13 22:04:36,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5558441558441558 [2022-12-13 22:04:36,890 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2022-12-13 22:04:36,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2022-12-13 22:04:36,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:36,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2022-12-13 22:04:36,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 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) [2022-12-13 22:04:36,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2022-12-13 22:04:36,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2022-12-13 22:04:36,893 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 247 flow. Second operand 5 states and 428 transitions. [2022-12-13 22:04:36,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 92 transitions, 819 flow [2022-12-13 22:04:36,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 92 transitions, 732 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-12-13 22:04:36,913 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 276 flow [2022-12-13 22:04:36,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2022-12-13 22:04:36,914 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2022-12-13 22:04:36,914 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 276 flow [2022-12-13 22:04:36,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2022-12-13 22:04:36,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:36,915 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:36,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:04:36,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:36,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2075440904, now seen corresponding path program 1 times [2022-12-13 22:04:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:36,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393431710] [2022-12-13 22:04:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:37,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393431710] [2022-12-13 22:04:37,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393431710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:37,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:37,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:04:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250162834] [2022-12-13 22:04:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:04:37,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:04:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:04:37,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 154 [2022-12-13 22:04:37,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2022-12-13 22:04:37,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:37,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 154 [2022-12-13 22:04:37,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:37,121 INFO L130 PetriNetUnfolder]: 92/197 cut-off events. [2022-12-13 22:04:37,122 INFO L131 PetriNetUnfolder]: For 604/637 co-relation queries the response was YES. [2022-12-13 22:04:37,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 197 events. 92/197 cut-off events. For 604/637 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 723 event pairs, 13 based on Foata normal form. 25/219 useless extension candidates. Maximal degree in co-relation 788. Up to 68 conditions per place. [2022-12-13 22:04:37,124 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 25 selfloop transitions, 11 changer transitions 15/60 dead transitions. [2022-12-13 22:04:37,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 495 flow [2022-12-13 22:04:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:04:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:04:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 601 transitions. [2022-12-13 22:04:37,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575139146567718 [2022-12-13 22:04:37,125 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 601 transitions. [2022-12-13 22:04:37,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 601 transitions. [2022-12-13 22:04:37,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:37,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 601 transitions. [2022-12-13 22:04:37,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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) [2022-12-13 22:04:37,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 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) [2022-12-13 22:04:37,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 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) [2022-12-13 22:04:37,128 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 276 flow. Second operand 7 states and 601 transitions. [2022-12-13 22:04:37,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 495 flow [2022-12-13 22:04:37,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 477 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-13 22:04:37,130 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 273 flow [2022-12-13 22:04:37,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2022-12-13 22:04:37,131 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2022-12-13 22:04:37,131 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 273 flow [2022-12-13 22:04:37,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2022-12-13 22:04:37,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:37,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:37,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:04:37,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:37,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2103740049, now seen corresponding path program 1 times [2022-12-13 22:04:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:37,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454447891] [2022-12-13 22:04:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:37,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:37,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:37,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454447891] [2022-12-13 22:04:37,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454447891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:37,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:37,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:04:37,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067955129] [2022-12-13 22:04:37,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:37,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:04:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:04:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:04:37,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 154 [2022-12-13 22:04:37,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:37,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:37,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 154 [2022-12-13 22:04:37,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:37,271 INFO L130 PetriNetUnfolder]: 78/192 cut-off events. [2022-12-13 22:04:37,272 INFO L131 PetriNetUnfolder]: For 575/579 co-relation queries the response was YES. [2022-12-13 22:04:37,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 192 events. 78/192 cut-off events. For 575/579 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 770 event pairs, 6 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 886. Up to 88 conditions per place. [2022-12-13 22:04:37,273 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 29 selfloop transitions, 1 changer transitions 27/58 dead transitions. [2022-12-13 22:04:37,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 549 flow [2022-12-13 22:04:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:04:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:04:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-12-13 22:04:37,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5762987012987013 [2022-12-13 22:04:37,275 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2022-12-13 22:04:37,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2022-12-13 22:04:37,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:37,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2022-12-13 22:04:37,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2022-12-13 22:04:37,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2022-12-13 22:04:37,276 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2022-12-13 22:04:37,276 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 273 flow. Second operand 4 states and 355 transitions. [2022-12-13 22:04:37,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 549 flow [2022-12-13 22:04:37,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 450 flow, removed 22 selfloop flow, removed 9 redundant places. [2022-12-13 22:04:37,279 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 154 flow [2022-12-13 22:04:37,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2022-12-13 22:04:37,279 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2022-12-13 22:04:37,279 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 154 flow [2022-12-13 22:04:37,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:37,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:37,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:37,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:04:37,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1458522889, now seen corresponding path program 2 times [2022-12-13 22:04:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:37,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341146232] [2022-12-13 22:04:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:37,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:37,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:37,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341146232] [2022-12-13 22:04:37,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341146232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:37,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:37,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:04:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017624156] [2022-12-13 22:04:37,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:04:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:04:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:04:37,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 154 [2022-12-13 22:04:37,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:37,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:37,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 154 [2022-12-13 22:04:37,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:37,435 INFO L130 PetriNetUnfolder]: 41/102 cut-off events. [2022-12-13 22:04:37,435 INFO L131 PetriNetUnfolder]: For 244/246 co-relation queries the response was YES. [2022-12-13 22:04:37,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 102 events. 41/102 cut-off events. For 244/246 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 296 event pairs, 7 based on Foata normal form. 1/102 useless extension candidates. Maximal degree in co-relation 387. Up to 57 conditions per place. [2022-12-13 22:04:37,436 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 24 selfloop transitions, 1 changer transitions 18/44 dead transitions. [2022-12-13 22:04:37,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 337 flow [2022-12-13 22:04:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:04:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:04:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2022-12-13 22:04:37,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5698051948051948 [2022-12-13 22:04:37,437 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2022-12-13 22:04:37,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2022-12-13 22:04:37,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:37,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2022-12-13 22:04:37,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 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) [2022-12-13 22:04:37,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2022-12-13 22:04:37,440 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2022-12-13 22:04:37,440 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 154 flow. Second operand 4 states and 351 transitions. [2022-12-13 22:04:37,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 337 flow [2022-12-13 22:04:37,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 313 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-12-13 22:04:37,443 INFO L231 Difference]: Finished difference. Result has 43 places, 22 transitions, 115 flow [2022-12-13 22:04:37,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=22} [2022-12-13 22:04:37,443 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2022-12-13 22:04:37,443 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 22 transitions, 115 flow [2022-12-13 22:04:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:37,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:37,444 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:37,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:04:37,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 22:04:37,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:37,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1425558675, now seen corresponding path program 3 times [2022-12-13 22:04:37,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:37,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024357404] [2022-12-13 22:04:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:37,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:37,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024357404] [2022-12-13 22:04:37,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024357404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:37,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:37,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:04:37,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710070189] [2022-12-13 22:04:37,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:37,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:04:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:04:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:04:37,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2022-12-13 22:04:37,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 22 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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) [2022-12-13 22:04:37,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:37,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2022-12-13 22:04:37,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:37,592 INFO L130 PetriNetUnfolder]: 19/52 cut-off events. [2022-12-13 22:04:37,592 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2022-12-13 22:04:37,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 52 events. 19/52 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 113 event pairs, 2 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 197. Up to 33 conditions per place. [2022-12-13 22:04:37,593 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2022-12-13 22:04:37,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 26 transitions, 193 flow [2022-12-13 22:04:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:04:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:04:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2022-12-13 22:04:37,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308441558441559 [2022-12-13 22:04:37,595 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2022-12-13 22:04:37,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2022-12-13 22:04:37,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:37,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2022-12-13 22:04:37,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2022-12-13 22:04:37,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2022-12-13 22:04:37,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2022-12-13 22:04:37,597 INFO L175 Difference]: Start difference. First operand has 43 places, 22 transitions, 115 flow. Second operand 4 states and 327 transitions. [2022-12-13 22:04:37,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 26 transitions, 193 flow [2022-12-13 22:04:37,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 184 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 22:04:37,599 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2022-12-13 22:04:37,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2022-12-13 22:04:37,599 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2022-12-13 22:04:37,600 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2022-12-13 22:04:37,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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) [2022-12-13 22:04:37,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 22:04:37,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 22:04:37,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 22:04:37,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 22:04:37,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 22:04:37,603 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:37,607 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 22:04:37,607 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:04:37,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:04:37 BasicIcfg [2022-12-13 22:04:37,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:04:37,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:04:37,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:04:37,611 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:04:37,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:04:33" (3/4) ... [2022-12-13 22:04:37,614 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 22:04:37,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 22:04:37,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 22:04:37,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 22:04:37,624 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 22:04:37,624 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 22:04:37,624 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 22:04:37,625 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 22:04:37,647 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:04:37,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:04:37,648 INFO L158 Benchmark]: Toolchain (without parser) took 4473.97ms. Allocated memory is still 176.2MB. Free memory was 134.3MB in the beginning and 69.8MB in the end (delta: 64.5MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. [2022-12-13 22:04:37,648 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:04:37,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.65ms. Allocated memory is still 176.2MB. Free memory was 134.3MB in the beginning and 111.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 22:04:37,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.57ms. Allocated memory is still 176.2MB. Free memory was 111.3MB in the beginning and 109.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:04:37,649 INFO L158 Benchmark]: Boogie Preprocessor took 18.84ms. Allocated memory is still 176.2MB. Free memory was 109.1MB in the beginning and 107.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:04:37,649 INFO L158 Benchmark]: RCFGBuilder took 285.69ms. Allocated memory is still 176.2MB. Free memory was 107.1MB in the beginning and 93.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 22:04:37,649 INFO L158 Benchmark]: TraceAbstraction took 3703.82ms. Allocated memory is still 176.2MB. Free memory was 93.1MB in the beginning and 71.9MB in the end (delta: 21.2MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2022-12-13 22:04:37,650 INFO L158 Benchmark]: Witness Printer took 36.67ms. Allocated memory is still 176.2MB. Free memory was 71.9MB in the beginning and 69.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:04:37,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.65ms. Allocated memory is still 176.2MB. Free memory was 134.3MB in the beginning and 111.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.57ms. Allocated memory is still 176.2MB. Free memory was 111.3MB in the beginning and 109.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.84ms. Allocated memory is still 176.2MB. Free memory was 109.1MB in the beginning and 107.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.69ms. Allocated memory is still 176.2MB. Free memory was 107.1MB in the beginning and 93.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3703.82ms. Allocated memory is still 176.2MB. Free memory was 93.1MB in the beginning and 71.9MB in the end (delta: 21.2MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * Witness Printer took 36.67ms. Allocated memory is still 176.2MB. Free memory was 71.9MB in the beginning and 69.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 83 PlacesBefore, 26 PlacesAfterwards, 74 TransitionsBefore, 17 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 63 TotalNumberOfCompositions, 1904 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1055, independent: 974, independent conditional: 0, independent unconditional: 974, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 591, independent: 559, independent conditional: 0, independent unconditional: 559, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1055, independent: 415, independent conditional: 0, independent unconditional: 415, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 591, unknown conditional: 0, unknown unconditional: 591] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 217 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 561 IncrementalHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 24 mSDtfsCounter, 561 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=5, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 22:04:37,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da27751-dbbb-4d65-ad2a-b56a4339033c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE