./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix055.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_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/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_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix055.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/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_29a3948f-8a77-43bd-b1f9-36731c511506/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 a4ebc4444460a05c0fe2d26c6269a3bce4de01cd65e247714c5237856dd0f827 --- 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 22:20:38,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:20:38,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:20:38,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:20:38,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:20:38,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:20:38,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:20:38,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:20:38,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:20:38,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:20:38,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:20:38,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:20:38,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:20:38,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:20:38,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:20:38,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:20:38,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:20:38,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:20:38,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:20:38,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:20:38,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:20:38,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:20:38,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:20:38,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:20:38,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:20:38,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:20:38,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:20:38,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:20:38,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:20:38,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:20:38,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:20:38,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:20:38,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:20:38,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:20:38,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:20:38,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:20:38,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:20:38,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:20:38,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:20:38,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:20:38,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:20:38,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:20:38,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:20:38,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:20:38,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:20:38,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:20:38,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:20:38,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:20:38,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:20:38,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:20:38,507 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:20:38,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:20:38,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:20:38,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:20:38,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:20:38,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:20:38,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:20:38,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:20:38,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:20:38,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:20:38,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:20:38,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:20:38,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:20:38,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:20:38,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:20:38,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:20:38,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:20:38,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:20:38,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:20:38,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:20:38,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:20:38,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:20:38,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:20:38,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:20:38,511 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:20:38,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:20:38,511 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:20:38,511 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_29a3948f-8a77-43bd-b1f9-36731c511506/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4ebc4444460a05c0fe2d26c6269a3bce4de01cd65e247714c5237856dd0f827 [2022-12-13 22:20:38,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:20:38,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:20:38,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:20:38,736 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:20:38,737 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:20:38,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix055.opt.i [2022-12-13 22:20:41,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:20:41,467 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:20:41,467 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/sv-benchmarks/c/pthread-wmm/mix055.opt.i [2022-12-13 22:20:41,477 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/data/8a7be3c18/245be46954074d5b9cf5e0d52f6cefab/FLAG4f4c00d05 [2022-12-13 22:20:41,829 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/data/8a7be3c18/245be46954074d5b9cf5e0d52f6cefab [2022-12-13 22:20:41,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:20:41,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:20:41,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:20:41,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:20:41,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:20:41,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:20:41" (1/1) ... [2022-12-13 22:20:41,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113c4471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:41, skipping insertion in model container [2022-12-13 22:20:41,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:20:41" (1/1) ... [2022-12-13 22:20:41,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:20:41,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:20:41,972 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_29a3948f-8a77-43bd-b1f9-36731c511506/sv-benchmarks/c/pthread-wmm/mix055.opt.i[944,957] [2022-12-13 22:20:42,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,094 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:20:42,103 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:20:42,112 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_29a3948f-8a77-43bd-b1f9-36731c511506/sv-benchmarks/c/pthread-wmm/mix055.opt.i[944,957] [2022-12-13 22:20:42,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:20:42,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:20:42,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:20:42,170 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:20:42,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42 WrapperNode [2022-12-13 22:20:42,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:20:42,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:20:42,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:20:42,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:20:42,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,216 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-12-13 22:20:42,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:20:42,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:20:42,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:20:42,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:20:42,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,243 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:20:42,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:20:42,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:20:42,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:20:42,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (1/1) ... [2022-12-13 22:20:42,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:20:42,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:20:42,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:20:42,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:20:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:20:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 22:20:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:20:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:20:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:20:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 22:20:42,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 22:20:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 22:20:42,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 22:20:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 22:20:42,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 22:20:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 22:20:42,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 22:20:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:20:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 22:20:42,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:20:42,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:20:42,310 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 22:20:42,421 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:20:42,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:20:42,664 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:20:42,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:20:42,762 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 22:20:42,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:20:42 BoogieIcfgContainer [2022-12-13 22:20:42,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:20:42,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:20:42,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:20:42,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:20:42,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:20:41" (1/3) ... [2022-12-13 22:20:42,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:20:42, skipping insertion in model container [2022-12-13 22:20:42,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:20:42" (2/3) ... [2022-12-13 22:20:42,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:20:42, skipping insertion in model container [2022-12-13 22:20:42,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:20:42" (3/3) ... [2022-12-13 22:20:42,773 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055.opt.i [2022-12-13 22:20:42,781 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:20:42,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:20:42,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 22:20:42,791 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:20:42,828 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 22:20:42,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 286 flow [2022-12-13 22:20:42,894 INFO L130 PetriNetUnfolder]: 2/129 cut-off events. [2022-12-13 22:20:42,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:20:42,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 22:20:42,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 133 transitions, 286 flow [2022-12-13 22:20:42,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 129 transitions, 270 flow [2022-12-13 22:20:42,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:20:42,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 129 transitions, 270 flow [2022-12-13 22:20:42,912 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 129 transitions, 270 flow [2022-12-13 22:20:42,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 270 flow [2022-12-13 22:20:42,933 INFO L130 PetriNetUnfolder]: 2/129 cut-off events. [2022-12-13 22:20:42,933 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:20:42,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 22:20:42,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 2952 [2022-12-13 22:20:46,174 INFO L134 LiptonReduction]: Checked pairs total: 7528 [2022-12-13 22:20:46,175 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-12-13 22:20:46,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:20:46,189 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;@13f6f913, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:20:46,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 22:20:46,193 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-12-13 22:20:46,193 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:20:46,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:46,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:46,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:46,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1506107395, now seen corresponding path program 1 times [2022-12-13 22:20:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:46,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091176027] [2022-12-13 22:20:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:46,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:46,511 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 22:20:46,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:46,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091176027] [2022-12-13 22:20:46,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091176027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:46,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:46,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:20:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049012117] [2022-12-13 22:20:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:46,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:20:46,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:20:46,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:20:46,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 245 [2022-12-13 22:20:46,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 22:20:46,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:46,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 245 [2022-12-13 22:20:46,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:20:46,975 INFO L130 PetriNetUnfolder]: 2891/4262 cut-off events. [2022-12-13 22:20:46,975 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 22:20:46,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8362 conditions, 4262 events. 2891/4262 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23834 event pairs, 668 based on Foata normal form. 144/4105 useless extension candidates. Maximal degree in co-relation 8350. Up to 2980 conditions per place. [2022-12-13 22:20:46,996 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 31 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2022-12-13 22:20:46,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 168 flow [2022-12-13 22:20:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:20:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:20:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2022-12-13 22:20:47,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5401360544217687 [2022-12-13 22:20:47,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2022-12-13 22:20:47,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2022-12-13 22:20:47,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:20:47,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2022-12-13 22:20:47,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 22:20:47,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 22:20:47,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 22:20:47,022 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 397 transitions. [2022-12-13 22:20:47,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 168 flow [2022-12-13 22:20:47,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 22:20:47,028 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 64 flow [2022-12-13 22:20:47,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2022-12-13 22:20:47,032 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2022-12-13 22:20:47,032 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 64 flow [2022-12-13 22:20:47,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 22:20:47,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:47,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:47,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:20:47,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1078996462, now seen corresponding path program 1 times [2022-12-13 22:20:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:47,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538526771] [2022-12-13 22:20:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:47,672 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 22:20:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538526771] [2022-12-13 22:20:47,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538526771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:47,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:47,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:20:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992648433] [2022-12-13 22:20:47,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:47,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:20:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:20:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:20:47,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 245 [2022-12-13 22:20:47,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 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 22:20:47,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:47,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 245 [2022-12-13 22:20:47,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:20:48,874 INFO L130 PetriNetUnfolder]: 7563/10510 cut-off events. [2022-12-13 22:20:48,874 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES. [2022-12-13 22:20:48,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21792 conditions, 10510 events. 7563/10510 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 54863 event pairs, 1131 based on Foata normal form. 476/10984 useless extension candidates. Maximal degree in co-relation 21782. Up to 6599 conditions per place. [2022-12-13 22:20:48,911 INFO L137 encePairwiseOnDemand]: 234/245 looper letters, 50 selfloop transitions, 11 changer transitions 36/98 dead transitions. [2022-12-13 22:20:48,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 98 transitions, 422 flow [2022-12-13 22:20:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:20:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:20:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 856 transitions. [2022-12-13 22:20:48,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49912536443148686 [2022-12-13 22:20:48,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 856 transitions. [2022-12-13 22:20:48,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 856 transitions. [2022-12-13 22:20:48,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:20:48,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 856 transitions. [2022-12-13 22:20:48,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 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 22:20:48,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:20:48,923 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:20:48,923 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 64 flow. Second operand 7 states and 856 transitions. [2022-12-13 22:20:48,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 98 transitions, 422 flow [2022-12-13 22:20:48,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 98 transitions, 408 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:20:48,926 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 146 flow [2022-12-13 22:20:48,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=146, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2022-12-13 22:20:48,927 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-12-13 22:20:48,927 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 146 flow [2022-12-13 22:20:48,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 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 22:20:48,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:48,928 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:48,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:20:48,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:48,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:48,929 INFO L85 PathProgramCache]: Analyzing trace with hash -910869080, now seen corresponding path program 1 times [2022-12-13 22:20:48,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:48,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587733466] [2022-12-13 22:20:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:50,028 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 22:20:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:50,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587733466] [2022-12-13 22:20:50,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587733466] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:50,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:50,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:20:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962718517] [2022-12-13 22:20:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:50,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:20:50,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:20:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:20:50,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 245 [2022-12-13 22:20:50,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 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 22:20:50,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:50,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 245 [2022-12-13 22:20:50,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:20:51,365 INFO L130 PetriNetUnfolder]: 9641/13366 cut-off events. [2022-12-13 22:20:51,365 INFO L131 PetriNetUnfolder]: For 10161/10161 co-relation queries the response was YES. [2022-12-13 22:20:51,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39722 conditions, 13366 events. 9641/13366 cut-off events. For 10161/10161 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 67367 event pairs, 1225 based on Foata normal form. 544/13910 useless extension candidates. Maximal degree in co-relation 39707. Up to 8137 conditions per place. [2022-12-13 22:20:51,417 INFO L137 encePairwiseOnDemand]: 233/245 looper letters, 54 selfloop transitions, 20 changer transitions 45/119 dead transitions. [2022-12-13 22:20:51,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 119 transitions, 714 flow [2022-12-13 22:20:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:20:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:20:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 849 transitions. [2022-12-13 22:20:51,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49504373177842564 [2022-12-13 22:20:51,419 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 849 transitions. [2022-12-13 22:20:51,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 849 transitions. [2022-12-13 22:20:51,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:20:51,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 849 transitions. [2022-12-13 22:20:51,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.28571428571429) internal successors, (849), 7 states have internal predecessors, (849), 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 22:20:51,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:20:51,423 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:20:51,423 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 146 flow. Second operand 7 states and 849 transitions. [2022-12-13 22:20:51,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 119 transitions, 714 flow [2022-12-13 22:20:51,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 119 transitions, 706 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 22:20:51,627 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 348 flow [2022-12-13 22:20:51,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=348, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2022-12-13 22:20:51,627 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2022-12-13 22:20:51,627 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 348 flow [2022-12-13 22:20:51,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 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 22:20:51,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:51,628 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:51,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:20:51,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1627678339, now seen corresponding path program 1 times [2022-12-13 22:20:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:51,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062568343] [2022-12-13 22:20:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:52,187 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 22:20:52,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:52,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062568343] [2022-12-13 22:20:52,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062568343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:52,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:52,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:20:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658491498] [2022-12-13 22:20:52,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:52,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:20:52,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:20:52,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:20:52,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 245 [2022-12-13 22:20:52,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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 22:20:52,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:52,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 245 [2022-12-13 22:20:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:20:53,456 INFO L130 PetriNetUnfolder]: 8799/12273 cut-off events. [2022-12-13 22:20:53,456 INFO L131 PetriNetUnfolder]: For 29582/30056 co-relation queries the response was YES. [2022-12-13 22:20:53,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48785 conditions, 12273 events. 8799/12273 cut-off events. For 29582/30056 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 63589 event pairs, 1498 based on Foata normal form. 750/12974 useless extension candidates. Maximal degree in co-relation 48764. Up to 7773 conditions per place. [2022-12-13 22:20:53,498 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 74 selfloop transitions, 23 changer transitions 44/145 dead transitions. [2022-12-13 22:20:53,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 145 transitions, 1249 flow [2022-12-13 22:20:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:20:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:20:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 983 transitions. [2022-12-13 22:20:53,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5015306122448979 [2022-12-13 22:20:53,500 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 983 transitions. [2022-12-13 22:20:53,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 983 transitions. [2022-12-13 22:20:53,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:20:53,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 983 transitions. [2022-12-13 22:20:53,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.875) internal successors, (983), 8 states have internal predecessors, (983), 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 22:20:53,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 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 22:20:53,505 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 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 22:20:53,505 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 348 flow. Second operand 8 states and 983 transitions. [2022-12-13 22:20:53,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 145 transitions, 1249 flow [2022-12-13 22:20:53,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 145 transitions, 1247 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 22:20:53,534 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 616 flow [2022-12-13 22:20:53,535 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=616, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2022-12-13 22:20:53,535 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2022-12-13 22:20:53,535 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 616 flow [2022-12-13 22:20:53,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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 22:20:53,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:53,536 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:53,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:20:53,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1614480396, now seen corresponding path program 1 times [2022-12-13 22:20:53,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:53,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341874993] [2022-12-13 22:20:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:53,785 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 22:20:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341874993] [2022-12-13 22:20:53,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341874993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:53,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:53,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:20:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404902087] [2022-12-13 22:20:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:20:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:20:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:20:53,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 245 [2022-12-13 22:20:53,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 22:20:53,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:53,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 245 [2022-12-13 22:20:53,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:20:54,896 INFO L130 PetriNetUnfolder]: 7111/10263 cut-off events. [2022-12-13 22:20:54,896 INFO L131 PetriNetUnfolder]: For 42749/43746 co-relation queries the response was YES. [2022-12-13 22:20:54,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46560 conditions, 10263 events. 7111/10263 cut-off events. For 42749/43746 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 57439 event pairs, 1400 based on Foata normal form. 391/10477 useless extension candidates. Maximal degree in co-relation 46532. Up to 6562 conditions per place. [2022-12-13 22:20:54,954 INFO L137 encePairwiseOnDemand]: 239/245 looper letters, 63 selfloop transitions, 16 changer transitions 23/116 dead transitions. [2022-12-13 22:20:54,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 116 transitions, 1149 flow [2022-12-13 22:20:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:20:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:20:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 884 transitions. [2022-12-13 22:20:54,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5154518950437318 [2022-12-13 22:20:54,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 884 transitions. [2022-12-13 22:20:54,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 884 transitions. [2022-12-13 22:20:54,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:20:54,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 884 transitions. [2022-12-13 22:20:54,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 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 22:20:54,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:20:54,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:20:54,962 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 616 flow. Second operand 7 states and 884 transitions. [2022-12-13 22:20:54,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 116 transitions, 1149 flow [2022-12-13 22:20:55,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 1121 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-12-13 22:20:55,051 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 697 flow [2022-12-13 22:20:55,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=697, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2022-12-13 22:20:55,052 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2022-12-13 22:20:55,052 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 697 flow [2022-12-13 22:20:55,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 22:20:55,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:55,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:55,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:20:55,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:55,053 INFO L85 PathProgramCache]: Analyzing trace with hash -397151971, now seen corresponding path program 1 times [2022-12-13 22:20:55,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:55,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475284551] [2022-12-13 22:20:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:55,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:55,562 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 22:20:55,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475284551] [2022-12-13 22:20:55,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475284551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:55,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:55,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:20:55,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511766906] [2022-12-13 22:20:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:55,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:20:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:55,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:20:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:20:55,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 245 [2022-12-13 22:20:55,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 697 flow. Second operand has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 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 22:20:55,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:55,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 245 [2022-12-13 22:20:55,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:20:56,794 INFO L130 PetriNetUnfolder]: 7559/10908 cut-off events. [2022-12-13 22:20:56,794 INFO L131 PetriNetUnfolder]: For 58108/59013 co-relation queries the response was YES. [2022-12-13 22:20:56,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51081 conditions, 10908 events. 7559/10908 cut-off events. For 58108/59013 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 61221 event pairs, 1263 based on Foata normal form. 493/11221 useless extension candidates. Maximal degree in co-relation 51050. Up to 6152 conditions per place. [2022-12-13 22:20:56,846 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 77 selfloop transitions, 15 changer transitions 28/134 dead transitions. [2022-12-13 22:20:56,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 134 transitions, 1387 flow [2022-12-13 22:20:56,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:20:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:20:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1005 transitions. [2022-12-13 22:20:56,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2022-12-13 22:20:56,848 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1005 transitions. [2022-12-13 22:20:56,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1005 transitions. [2022-12-13 22:20:56,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:20:56,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1005 transitions. [2022-12-13 22:20:56,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 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 22:20:56,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 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 22:20:56,852 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 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 22:20:56,852 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 697 flow. Second operand 8 states and 1005 transitions. [2022-12-13 22:20:56,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 134 transitions, 1387 flow [2022-12-13 22:20:56,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 134 transitions, 1371 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 22:20:56,969 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 812 flow [2022-12-13 22:20:56,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2022-12-13 22:20:56,969 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2022-12-13 22:20:56,969 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 812 flow [2022-12-13 22:20:56,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 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 22:20:56,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:56,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:20:56,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash 871054648, now seen corresponding path program 1 times [2022-12-13 22:20:56,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:56,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707746319] [2022-12-13 22:20:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:57,070 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 22:20:57,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:57,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707746319] [2022-12-13 22:20:57,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707746319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:57,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:57,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:20:57,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270984386] [2022-12-13 22:20:57,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:57,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:20:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:57,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:20:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:20:57,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 245 [2022-12-13 22:20:57,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 812 flow. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:20:57,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:57,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 245 [2022-12-13 22:20:57,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:20:58,069 INFO L130 PetriNetUnfolder]: 5716/8391 cut-off events. [2022-12-13 22:20:58,069 INFO L131 PetriNetUnfolder]: For 67049/69255 co-relation queries the response was YES. [2022-12-13 22:20:58,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42298 conditions, 8391 events. 5716/8391 cut-off events. For 67049/69255 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 49868 event pairs, 844 based on Foata normal form. 1154/9155 useless extension candidates. Maximal degree in co-relation 42263. Up to 3721 conditions per place. [2022-12-13 22:20:58,116 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 133 selfloop transitions, 6 changer transitions 0/155 dead transitions. [2022-12-13 22:20:58,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 155 transitions, 2024 flow [2022-12-13 22:20:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:20:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:20:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2022-12-13 22:20:58,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.513265306122449 [2022-12-13 22:20:58,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2022-12-13 22:20:58,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2022-12-13 22:20:58,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:20:58,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2022-12-13 22:20:58,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 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 22:20:58,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 22:20:58,121 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 22:20:58,121 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 812 flow. Second operand 4 states and 503 transitions. [2022-12-13 22:20:58,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 155 transitions, 2024 flow [2022-12-13 22:20:58,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 155 transitions, 1933 flow, removed 32 selfloop flow, removed 4 redundant places. [2022-12-13 22:20:58,196 INFO L231 Difference]: Finished difference. Result has 70 places, 79 transitions, 825 flow [2022-12-13 22:20:58,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=825, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2022-12-13 22:20:58,196 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2022-12-13 22:20:58,196 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 825 flow [2022-12-13 22:20:58,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:20:58,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:58,197 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:58,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:20:58,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1227722559, now seen corresponding path program 1 times [2022-12-13 22:20:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:58,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018291813] [2022-12-13 22:20:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:20:58,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:58,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018291813] [2022-12-13 22:20:58,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018291813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:58,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:58,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:20:58,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496670218] [2022-12-13 22:20:58,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:58,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:20:58,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:58,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:20:58,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:20:58,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 245 [2022-12-13 22:20:58,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 825 flow. Second operand has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 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 22:20:58,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:58,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 245 [2022-12-13 22:20:58,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:20:59,262 INFO L130 PetriNetUnfolder]: 4373/6660 cut-off events. [2022-12-13 22:20:59,262 INFO L131 PetriNetUnfolder]: For 53582/56101 co-relation queries the response was YES. [2022-12-13 22:20:59,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35321 conditions, 6660 events. 4373/6660 cut-off events. For 53582/56101 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 41099 event pairs, 600 based on Foata normal form. 1030/7344 useless extension candidates. Maximal degree in co-relation 35286. Up to 2664 conditions per place. [2022-12-13 22:20:59,337 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 163 selfloop transitions, 10 changer transitions 0/188 dead transitions. [2022-12-13 22:20:59,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 188 transitions, 2429 flow [2022-12-13 22:20:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:20:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:20:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2022-12-13 22:20:59,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5151020408163265 [2022-12-13 22:20:59,339 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2022-12-13 22:20:59,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2022-12-13 22:20:59,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:20:59,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2022-12-13 22:20:59,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 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 22:20:59,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 22:20:59,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 22:20:59,342 INFO L175 Difference]: Start difference. First operand has 70 places, 79 transitions, 825 flow. Second operand 5 states and 631 transitions. [2022-12-13 22:20:59,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 188 transitions, 2429 flow [2022-12-13 22:20:59,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 188 transitions, 2390 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-12-13 22:20:59,376 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 861 flow [2022-12-13 22:20:59,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=861, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2022-12-13 22:20:59,377 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2022-12-13 22:20:59,377 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 861 flow [2022-12-13 22:20:59,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 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 22:20:59,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:20:59,378 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:20:59,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:20:59,378 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:20:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:20:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash 352384582, now seen corresponding path program 1 times [2022-12-13 22:20:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:20:59,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033671632] [2022-12-13 22:20:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:20:59,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:20:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:20:59,765 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 22:20:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:20:59,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033671632] [2022-12-13 22:20:59,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033671632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:20:59,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:20:59,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:20:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913091333] [2022-12-13 22:20:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:20:59,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:20:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:20:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:20:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:20:59,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 245 [2022-12-13 22:20:59,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 861 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 22:20:59,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:20:59,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 245 [2022-12-13 22:20:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:21:00,968 INFO L130 PetriNetUnfolder]: 7043/10574 cut-off events. [2022-12-13 22:21:00,968 INFO L131 PetriNetUnfolder]: For 71644/72286 co-relation queries the response was YES. [2022-12-13 22:21:00,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60240 conditions, 10574 events. 7043/10574 cut-off events. For 71644/72286 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 62706 event pairs, 1352 based on Foata normal form. 220/10751 useless extension candidates. Maximal degree in co-relation 60204. Up to 5177 conditions per place. [2022-12-13 22:21:01,001 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 97 selfloop transitions, 15 changer transitions 43/157 dead transitions. [2022-12-13 22:21:01,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 157 transitions, 1867 flow [2022-12-13 22:21:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:21:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:21:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 726 transitions. [2022-12-13 22:21:01,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2022-12-13 22:21:01,003 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 726 transitions. [2022-12-13 22:21:01,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 726 transitions. [2022-12-13 22:21:01,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:21:01,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 726 transitions. [2022-12-13 22:21:01,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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 22:21:01,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 22:21:01,006 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 22:21:01,006 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 861 flow. Second operand 6 states and 726 transitions. [2022-12-13 22:21:01,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 157 transitions, 1867 flow [2022-12-13 22:21:01,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 157 transitions, 1839 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 22:21:01,048 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 881 flow [2022-12-13 22:21:01,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=881, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2022-12-13 22:21:01,048 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2022-12-13 22:21:01,049 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 881 flow [2022-12-13 22:21:01,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 22:21:01,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:21:01,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:21:01,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 22:21:01,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:21:01,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1192510912, now seen corresponding path program 1 times [2022-12-13 22:21:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:21:01,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271851858] [2022-12-13 22:21:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:21:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:21:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:21:01,161 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 22:21:01,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:21:01,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271851858] [2022-12-13 22:21:01,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271851858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:21:01,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:21:01,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:21:01,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705792267] [2022-12-13 22:21:01,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:21:01,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:21:01,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:21:01,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:21:01,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:21:01,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 245 [2022-12-13 22:21:01,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 881 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 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 22:21:01,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:21:01,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 245 [2022-12-13 22:21:01,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:21:01,680 INFO L130 PetriNetUnfolder]: 2039/3309 cut-off events. [2022-12-13 22:21:01,680 INFO L131 PetriNetUnfolder]: For 27617/28556 co-relation queries the response was YES. [2022-12-13 22:21:01,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18464 conditions, 3309 events. 2039/3309 cut-off events. For 27617/28556 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 19566 event pairs, 227 based on Foata normal form. 499/3684 useless extension candidates. Maximal degree in co-relation 18424. Up to 1236 conditions per place. [2022-12-13 22:21:01,693 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 138 selfloop transitions, 14 changer transitions 11/176 dead transitions. [2022-12-13 22:21:01,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 176 transitions, 2285 flow [2022-12-13 22:21:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:21:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:21:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 755 transitions. [2022-12-13 22:21:01,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2022-12-13 22:21:01,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 755 transitions. [2022-12-13 22:21:01,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 755 transitions. [2022-12-13 22:21:01,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:21:01,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 755 transitions. [2022-12-13 22:21:01,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 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 22:21:01,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 22:21:01,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 22:21:01,698 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 881 flow. Second operand 6 states and 755 transitions. [2022-12-13 22:21:01,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 176 transitions, 2285 flow [2022-12-13 22:21:01,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 176 transitions, 2233 flow, removed 12 selfloop flow, removed 6 redundant places. [2022-12-13 22:21:01,748 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 877 flow [2022-12-13 22:21:01,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=877, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2022-12-13 22:21:01,749 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2022-12-13 22:21:01,749 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 877 flow [2022-12-13 22:21:01,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 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 22:21:01,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:21:01,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:21:01,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 22:21:01,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:21:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash -513798551, now seen corresponding path program 1 times [2022-12-13 22:21:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:21:01,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115438903] [2022-12-13 22:21:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:21:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:21:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:21:01,855 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 22:21:01,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:21:01,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115438903] [2022-12-13 22:21:01,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115438903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:21:01,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:21:01,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:21:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017889546] [2022-12-13 22:21:01,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:21:01,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:21:01,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:21:01,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:21:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:21:01,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2022-12-13 22:21:01,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 877 flow. Second operand has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 22:21:01,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:21:01,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2022-12-13 22:21:01,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:21:02,481 INFO L130 PetriNetUnfolder]: 3147/5152 cut-off events. [2022-12-13 22:21:02,481 INFO L131 PetriNetUnfolder]: For 39009/39530 co-relation queries the response was YES. [2022-12-13 22:21:02,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30286 conditions, 5152 events. 3147/5152 cut-off events. For 39009/39530 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 32670 event pairs, 404 based on Foata normal form. 102/5163 useless extension candidates. Maximal degree in co-relation 30247. Up to 2623 conditions per place. [2022-12-13 22:21:02,500 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 106 selfloop transitions, 2 changer transitions 50/168 dead transitions. [2022-12-13 22:21:02,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 168 transitions, 2108 flow [2022-12-13 22:21:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:21:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:21:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2022-12-13 22:21:02,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.52 [2022-12-13 22:21:02,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2022-12-13 22:21:02,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2022-12-13 22:21:02,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:21:02,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2022-12-13 22:21:02,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 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 22:21:02,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 22:21:02,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 22:21:02,506 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 877 flow. Second operand 5 states and 637 transitions. [2022-12-13 22:21:02,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 168 transitions, 2108 flow [2022-12-13 22:21:02,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 168 transitions, 2026 flow, removed 22 selfloop flow, removed 3 redundant places. [2022-12-13 22:21:02,599 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 829 flow [2022-12-13 22:21:02,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=829, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2022-12-13 22:21:02,599 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2022-12-13 22:21:02,599 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 829 flow [2022-12-13 22:21:02,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 22:21:02,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:21:02,600 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:21:02,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 22:21:02,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:21:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash -778710307, now seen corresponding path program 2 times [2022-12-13 22:21:02,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:21:02,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103505899] [2022-12-13 22:21:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:21:02,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:21:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:21:02,741 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 22:21:02,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:21:02,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103505899] [2022-12-13 22:21:02,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103505899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:21:02,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:21:02,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:21:02,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679443424] [2022-12-13 22:21:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:21:02,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:21:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:21:02,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:21:02,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:21:02,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 245 [2022-12-13 22:21:02,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 829 flow. Second operand has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 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 22:21:02,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:21:02,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 245 [2022-12-13 22:21:02,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:21:03,320 INFO L130 PetriNetUnfolder]: 2611/4296 cut-off events. [2022-12-13 22:21:03,320 INFO L131 PetriNetUnfolder]: For 31694/32646 co-relation queries the response was YES. [2022-12-13 22:21:03,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23517 conditions, 4296 events. 2611/4296 cut-off events. For 31694/32646 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 27850 event pairs, 233 based on Foata normal form. 396/4541 useless extension candidates. Maximal degree in co-relation 23480. Up to 1511 conditions per place. [2022-12-13 22:21:03,335 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 69 selfloop transitions, 18 changer transitions 62/155 dead transitions. [2022-12-13 22:21:03,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 155 transitions, 1974 flow [2022-12-13 22:21:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:21:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:21:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 859 transitions. [2022-12-13 22:21:03,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5008746355685131 [2022-12-13 22:21:03,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 859 transitions. [2022-12-13 22:21:03,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 859 transitions. [2022-12-13 22:21:03,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:21:03,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 859 transitions. [2022-12-13 22:21:03,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 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 22:21:03,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:21:03,340 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:21:03,340 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 829 flow. Second operand 7 states and 859 transitions. [2022-12-13 22:21:03,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 155 transitions, 1974 flow [2022-12-13 22:21:03,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 155 transitions, 1882 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-12-13 22:21:03,444 INFO L231 Difference]: Finished difference. Result has 85 places, 55 transitions, 537 flow [2022-12-13 22:21:03,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=537, PETRI_PLACES=85, PETRI_TRANSITIONS=55} [2022-12-13 22:21:03,444 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2022-12-13 22:21:03,444 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 55 transitions, 537 flow [2022-12-13 22:21:03,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 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 22:21:03,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:21:03,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:21:03,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 22:21:03,445 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:21:03,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1291893846, now seen corresponding path program 1 times [2022-12-13 22:21:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:21:03,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623353833] [2022-12-13 22:21:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:21:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:21:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:21:03,791 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 22:21:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:21:03,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623353833] [2022-12-13 22:21:03,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623353833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:21:03,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:21:03,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:21:03,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270786400] [2022-12-13 22:21:03,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:21:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:21:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:21:03,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:21:03,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:21:03,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 245 [2022-12-13 22:21:03,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 55 transitions, 537 flow. Second operand has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 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 22:21:03,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:21:03,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 245 [2022-12-13 22:21:03,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:21:04,131 INFO L130 PetriNetUnfolder]: 538/929 cut-off events. [2022-12-13 22:21:04,131 INFO L131 PetriNetUnfolder]: For 5478/5482 co-relation queries the response was YES. [2022-12-13 22:21:04,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 929 events. 538/929 cut-off events. For 5478/5482 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4131 event pairs, 66 based on Foata normal form. 1/930 useless extension candidates. Maximal degree in co-relation 5462. Up to 447 conditions per place. [2022-12-13 22:21:04,134 INFO L137 encePairwiseOnDemand]: 235/245 looper letters, 49 selfloop transitions, 6 changer transitions 65/121 dead transitions. [2022-12-13 22:21:04,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 121 transitions, 1363 flow [2022-12-13 22:21:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:21:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:21:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 808 transitions. [2022-12-13 22:21:04,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47113702623906706 [2022-12-13 22:21:04,136 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 808 transitions. [2022-12-13 22:21:04,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 808 transitions. [2022-12-13 22:21:04,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:21:04,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 808 transitions. [2022-12-13 22:21:04,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 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 22:21:04,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:21:04,139 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 22:21:04,139 INFO L175 Difference]: Start difference. First operand has 85 places, 55 transitions, 537 flow. Second operand 7 states and 808 transitions. [2022-12-13 22:21:04,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 121 transitions, 1363 flow [2022-12-13 22:21:04,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 121 transitions, 895 flow, removed 86 selfloop flow, removed 25 redundant places. [2022-12-13 22:21:04,149 INFO L231 Difference]: Finished difference. Result has 68 places, 42 transitions, 228 flow [2022-12-13 22:21:04,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2022-12-13 22:21:04,150 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2022-12-13 22:21:04,150 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 42 transitions, 228 flow [2022-12-13 22:21:04,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 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 22:21:04,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:21:04,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:21:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 22:21:04,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:21:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:04,151 INFO L85 PathProgramCache]: Analyzing trace with hash 353008094, now seen corresponding path program 2 times [2022-12-13 22:21:04,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:21:04,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935235152] [2022-12-13 22:21:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:21:04,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:21:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:21:04,636 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 22:21:04,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:21:04,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935235152] [2022-12-13 22:21:04,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935235152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:21:04,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:21:04,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:21:04,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711608667] [2022-12-13 22:21:04,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:21:04,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:21:04,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:21:04,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:21:04,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:21:04,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 245 [2022-12-13 22:21:04,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 42 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 112.25) internal successors, (898), 8 states have internal predecessors, (898), 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 22:21:04,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:21:04,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 245 [2022-12-13 22:21:04,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:21:04,814 INFO L130 PetriNetUnfolder]: 254/476 cut-off events. [2022-12-13 22:21:04,814 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-12-13 22:21:04,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 476 events. 254/476 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1874 event pairs, 54 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 1759. Up to 248 conditions per place. [2022-12-13 22:21:04,815 INFO L137 encePairwiseOnDemand]: 237/245 looper letters, 43 selfloop transitions, 7 changer transitions 23/73 dead transitions. [2022-12-13 22:21:04,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 73 transitions, 512 flow [2022-12-13 22:21:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:21:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:21:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2022-12-13 22:21:04,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-12-13 22:21:04,816 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2022-12-13 22:21:04,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2022-12-13 22:21:04,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:21:04,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2022-12-13 22:21:04,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 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 22:21:04,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 22:21:04,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 22:21:04,819 INFO L175 Difference]: Start difference. First operand has 68 places, 42 transitions, 228 flow. Second operand 6 states and 700 transitions. [2022-12-13 22:21:04,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 73 transitions, 512 flow [2022-12-13 22:21:04,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 473 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-12-13 22:21:04,821 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 201 flow [2022-12-13 22:21:04,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2022-12-13 22:21:04,821 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2022-12-13 22:21:04,821 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 201 flow [2022-12-13 22:21:04,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.25) internal successors, (898), 8 states have internal predecessors, (898), 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 22:21:04,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:21:04,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:21:04,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 22:21:04,822 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:21:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:21:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1947443454, now seen corresponding path program 3 times [2022-12-13 22:21:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:21:04,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85217662] [2022-12-13 22:21:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:21:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:21:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:21:04,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:21:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:21:04,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 22:21:04,900 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:21:04,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 22:21:04,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 22:21:04,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 22:21:04,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 22:21:04,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 22:21:04,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-13 22:21:04,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 22:21:04,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 22:21:04,903 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:21:04,908 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 22:21:04,908 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:21:04,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:21:04 BasicIcfg [2022-12-13 22:21:04,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:21:04,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:21:04,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:21:04,954 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:21:04,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:20:42" (3/4) ... [2022-12-13 22:21:04,956 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 22:21:05,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:21:05,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:21:05,008 INFO L158 Benchmark]: Toolchain (without parser) took 23176.88ms. Allocated memory was 138.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 103.2MB in the beginning and 434.5MB in the end (delta: -331.3MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2022-12-13 22:21:05,008 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:21:05,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.10ms. Allocated memory is still 138.4MB. Free memory was 102.8MB in the beginning and 76.0MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 22:21:05,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.55ms. Allocated memory is still 138.4MB. Free memory was 75.9MB in the beginning and 73.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 22:21:05,009 INFO L158 Benchmark]: Boogie Preprocessor took 31.34ms. Allocated memory is still 138.4MB. Free memory was 73.0MB in the beginning and 70.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:21:05,009 INFO L158 Benchmark]: RCFGBuilder took 515.39ms. Allocated memory is still 138.4MB. Free memory was 70.9MB in the beginning and 85.2MB in the end (delta: -14.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-12-13 22:21:05,009 INFO L158 Benchmark]: TraceAbstraction took 22187.00ms. Allocated memory was 138.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 84.4MB in the beginning and 449.2MB in the end (delta: -364.9MB). Peak memory consumption was 970.0MB. Max. memory is 16.1GB. [2022-12-13 22:21:05,010 INFO L158 Benchmark]: Witness Printer took 53.76ms. Allocated memory is still 1.5GB. Free memory was 449.2MB in the beginning and 434.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 22:21:05,011 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 138.4MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.10ms. Allocated memory is still 138.4MB. Free memory was 102.8MB in the beginning and 76.0MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.55ms. Allocated memory is still 138.4MB. Free memory was 75.9MB in the beginning and 73.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.34ms. Allocated memory is still 138.4MB. Free memory was 73.0MB in the beginning and 70.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.39ms. Allocated memory is still 138.4MB. Free memory was 70.9MB in the beginning and 85.2MB in the end (delta: -14.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 22187.00ms. Allocated memory was 138.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 84.4MB in the beginning and 449.2MB in the end (delta: -364.9MB). Peak memory consumption was 970.0MB. Max. memory is 16.1GB. * Witness Printer took 53.76ms. Allocated memory is still 1.5GB. Free memory was 449.2MB in the beginning and 434.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 140 PlacesBefore, 42 PlacesAfterwards, 129 TransitionsBefore, 30 TransitionsAfterwards, 2952 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 112 TotalNumberOfCompositions, 7528 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3433, independent: 3232, independent conditional: 0, independent unconditional: 3232, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1545, independent: 1512, independent conditional: 0, independent unconditional: 1512, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3433, independent: 1720, independent conditional: 0, independent unconditional: 1720, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 1545, unknown conditional: 0, unknown unconditional: 1545] , Statistics on independence cache: Total cache size (in pairs): 151, Positive cache size: 136, Positive conditional cache size: 0, Positive unconditional cache size: 136, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int a = 0; [L717] 0 _Bool main$tmp_guard0; [L718] 0 _Bool main$tmp_guard1; [L720] 0 int x = 0; [L722] 0 int y = 0; [L724] 0 int z = 0; [L725] 0 _Bool z$flush_delayed; [L726] 0 int z$mem_tmp; [L727] 0 _Bool z$r_buff0_thd0; [L728] 0 _Bool z$r_buff0_thd1; [L729] 0 _Bool z$r_buff0_thd2; [L730] 0 _Bool z$r_buff0_thd3; [L731] 0 _Bool z$r_buff0_thd4; [L732] 0 _Bool z$r_buff1_thd0; [L733] 0 _Bool z$r_buff1_thd1; [L734] 0 _Bool z$r_buff1_thd2; [L735] 0 _Bool z$r_buff1_thd3; [L736] 0 _Bool z$r_buff1_thd4; [L737] 0 _Bool z$read_delayed; [L738] 0 int *z$read_delayed_var; [L739] 0 int z$w_buff0; [L740] 0 _Bool z$w_buff0_used; [L741] 0 int z$w_buff1; [L742] 0 _Bool z$w_buff1_used; [L743] 0 _Bool weak$$choice0; [L744] 0 _Bool weak$$choice2; [L836] 0 pthread_t t1461; [L837] FCALL, FORK 0 pthread_create(&t1461, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1461, ((void *)0), P0, ((void *)0))=-3, t1461={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L838] 0 pthread_t t1462; [L839] FCALL, FORK 0 pthread_create(&t1462, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1462, ((void *)0), P1, ((void *)0))=-2, t1461={5:0}, t1462={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L840] 0 pthread_t t1463; [L841] FCALL, FORK 0 pthread_create(&t1463, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1463, ((void *)0), P2, ((void *)0))=-1, t1461={5:0}, t1462={6:0}, t1463={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L842] 0 pthread_t t1464; [L843] FCALL, FORK 0 pthread_create(&t1464, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1464, ((void *)0), P3, ((void *)0))=0, t1461={5:0}, t1462={6:0}, t1463={7:0}, t1464={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L798] 4 z$w_buff1 = z$w_buff0 [L799] 4 z$w_buff0 = 2 [L800] 4 z$w_buff1_used = z$w_buff0_used [L801] 4 z$w_buff0_used = (_Bool)1 [L802] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L802] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L803] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L804] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L805] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L806] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L807] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L808] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L811] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L748] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L751] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L763] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L766] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L778] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L781] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L814] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L815] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L816] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L817] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L818] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L821] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L823] 4 return 0; [L784] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L785] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L786] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L787] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L788] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L756] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L758] 1 return 0; [L771] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L773] 2 return 0; [L791] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L793] 3 return 0; [L845] 0 main$tmp_guard0 = __unbuffered_cnt == 4 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1461={5:0}, t1462={6:0}, t1463={7:0}, t1464={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L847] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L847] RET 0 assume_abort_if_not(main$tmp_guard0) [L849] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L850] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L851] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L852] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L853] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1461={5:0}, t1462={6:0}, t1463={7:0}, t1464={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L856] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L857] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L858] 0 z$flush_delayed = weak$$choice2 [L859] 0 z$mem_tmp = z [L860] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L861] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L862] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L863] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L864] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L866] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L867] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p3_EAX == 0) [L868] 0 z = z$flush_delayed ? z$mem_tmp : z [L869] 0 z$flush_delayed = (_Bool)0 [L871] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 843]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 837]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 167 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.1s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1187 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1022 mSDsluCounter, 525 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 477 mSDsCounter, 197 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1955 IncrementalHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 197 mSolverCounterUnsat, 48 mSDtfsCounter, 1955 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=881occurred in iteration=9, InterpolantAutomatonStates: 86, 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, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 1927 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 22:21:05,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a3948f-8a77-43bd-b1f9-36731c511506/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE