./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037.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_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/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_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/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_038d446d-f0b3-47dc-adfe-f3d34734e718/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 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 --- 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 11:34:55,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:34:55,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:34:55,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:34:55,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:34:55,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:34:55,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:34:55,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:34:55,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:34:55,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:34:55,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:34:55,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:34:55,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:34:55,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:34:55,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:34:55,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:34:55,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:34:55,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:34:55,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:34:55,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:34:55,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:34:55,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:34:55,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:34:55,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:34:55,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:34:55,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:34:55,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:34:55,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:34:55,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:34:55,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:34:55,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:34:55,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:34:55,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:34:55,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:34:55,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:34:55,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:34:55,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:34:55,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:34:55,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:34:55,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:34:55,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:34:55,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:34:55,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:34:55,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:34:55,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:34:55,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:34:55,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:34:55,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:34:55,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:34:55,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:34:55,833 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:34:55,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:34:55,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:34:55,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:34:55,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:34:55,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:34:55,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:34:55,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:34:55,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:34:55,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:34:55,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:34:55,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:34:55,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:34:55,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:34:55,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:34:55,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:34:55,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:34:55,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:34:55,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:34:55,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:34:55,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:34:55,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:34:55,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:34:55,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:34:55,838 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:34:55,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:34:55,839 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:34:55,839 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_038d446d-f0b3-47dc-adfe-f3d34734e718/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 [2022-12-13 11:34:56,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:34:56,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:34:56,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:34:56,067 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:34:56,068 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:34:56,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe037.i [2022-12-13 11:34:58,711 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:34:58,927 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:34:58,927 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/sv-benchmarks/c/pthread-wmm/safe037.i [2022-12-13 11:34:58,936 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/data/8e9148cd3/78ca9dabe6a247e9865a47c61518161d/FLAG9074a3ea5 [2022-12-13 11:34:58,946 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/data/8e9148cd3/78ca9dabe6a247e9865a47c61518161d [2022-12-13 11:34:58,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:34:58,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:34:58,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:34:58,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:34:58,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:34:58,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:34:58" (1/1) ... [2022-12-13 11:34:58,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a815cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:58, skipping insertion in model container [2022-12-13 11:34:58,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:34:58" (1/1) ... [2022-12-13 11:34:58,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:34:58,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:34:59,112 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_038d446d-f0b3-47dc-adfe-f3d34734e718/sv-benchmarks/c/pthread-wmm/safe037.i[941,954] [2022-12-13 11:34:59,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:34:59,253 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:34:59,264 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_038d446d-f0b3-47dc-adfe-f3d34734e718/sv-benchmarks/c/pthread-wmm/safe037.i[941,954] [2022-12-13 11:34:59,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:34:59,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:34:59,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:34:59,331 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:34:59,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59 WrapperNode [2022-12-13 11:34:59,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:34:59,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:34:59,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:34:59,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:34:59,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,370 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-12-13 11:34:59,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:34:59,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:34:59,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:34:59,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:34:59,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,389 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:34:59,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:34:59,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:34:59,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:34:59,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (1/1) ... [2022-12-13 11:34:59,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:34:59,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:34:59,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:34:59,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:34:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:34:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:34:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:34:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:34:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:34:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 11:34:59,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 11:34:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 11:34:59,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 11:34:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 11:34:59,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 11:34:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:34:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:34:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:34:59,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:34:59,460 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 11:34:59,549 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:34:59,550 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:34:59,689 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:34:59,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:34:59,697 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:34:59,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:34:59 BoogieIcfgContainer [2022-12-13 11:34:59,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:34:59,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:34:59,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:34:59,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:34:59,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:34:58" (1/3) ... [2022-12-13 11:34:59,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f3f4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:34:59, skipping insertion in model container [2022-12-13 11:34:59,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:34:59" (2/3) ... [2022-12-13 11:34:59,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f3f4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:34:59, skipping insertion in model container [2022-12-13 11:34:59,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:34:59" (3/3) ... [2022-12-13 11:34:59,709 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2022-12-13 11:34:59,717 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:34:59,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:34:59,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:34:59,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:34:59,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:34:59,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-12-13 11:34:59,846 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2022-12-13 11:34:59,846 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:34:59,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-12-13 11:34:59,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2022-12-13 11:34:59,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2022-12-13 11:34:59,859 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:34:59,866 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 76 transitions, 161 flow [2022-12-13 11:34:59,868 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 76 transitions, 161 flow [2022-12-13 11:34:59,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 161 flow [2022-12-13 11:34:59,887 INFO L130 PetriNetUnfolder]: 1/76 cut-off events. [2022-12-13 11:34:59,887 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:34:59,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 1/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 37 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 11:34:59,889 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-12-13 11:35:01,352 INFO L134 LiptonReduction]: Checked pairs total: 1851 [2022-12-13 11:35:01,353 INFO L136 LiptonReduction]: Total number of compositions: 63 [2022-12-13 11:35:01,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:35:01,372 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;@78d33b91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:35:01,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 11:35:01,377 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-13 11:35:01,377 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:35:01,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:01,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:01,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:35:01,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:01,382 INFO L85 PathProgramCache]: Analyzing trace with hash 891964130, now seen corresponding path program 1 times [2022-12-13 11:35:01,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:01,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568127635] [2022-12-13 11:35:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:01,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:01,699 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 11:35:01,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:01,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568127635] [2022-12-13 11:35:01,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568127635] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:01,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:01,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:35:01,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268999660] [2022-12-13 11:35:01,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:35:01,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:35:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:35:01,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 11:35:01,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 11:35:01,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:01,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 11:35:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:01,844 INFO L130 PetriNetUnfolder]: 151/275 cut-off events. [2022-12-13 11:35:01,844 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 11:35:01,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 275 events. 151/275 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1033 event pairs, 33 based on Foata normal form. 27/299 useless extension candidates. Maximal degree in co-relation 563. Up to 171 conditions per place. [2022-12-13 11:35:01,848 INFO L137 encePairwiseOnDemand]: 150/156 looper letters, 20 selfloop transitions, 4 changer transitions 13/40 dead transitions. [2022-12-13 11:35:01,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 169 flow [2022-12-13 11:35:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:35:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:35:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2022-12-13 11:35:01,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5756410256410256 [2022-12-13 11:35:01,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2022-12-13 11:35:01,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2022-12-13 11:35:01,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:01,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2022-12-13 11:35:01,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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 11:35:01,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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 11:35:01,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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 11:35:01,871 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 5 states and 449 transitions. [2022-12-13 11:35:01,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 169 flow [2022-12-13 11:35:01,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 11:35:01,875 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 76 flow [2022-12-13 11:35:01,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2022-12-13 11:35:01,879 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2022-12-13 11:35:01,879 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 76 flow [2022-12-13 11:35:01,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 11:35:01,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:01,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:01,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:35:01,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:35:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 798354861, now seen corresponding path program 1 times [2022-12-13 11:35:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:01,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191454410] [2022-12-13 11:35:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:01,997 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 11:35:01,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:01,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191454410] [2022-12-13 11:35:01,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191454410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:01,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:01,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:35:01,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568255754] [2022-12-13 11:35:01,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:01,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:35:01,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:01,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:35:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:35:02,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 11:35:02,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:35:02,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:02,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 11:35:02,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:02,088 INFO L130 PetriNetUnfolder]: 91/183 cut-off events. [2022-12-13 11:35:02,088 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-12-13 11:35:02,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 183 events. 91/183 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 602 event pairs, 17 based on Foata normal form. 19/199 useless extension candidates. Maximal degree in co-relation 536. Up to 82 conditions per place. [2022-12-13 11:35:02,090 INFO L137 encePairwiseOnDemand]: 150/156 looper letters, 25 selfloop transitions, 7 changer transitions 13/48 dead transitions. [2022-12-13 11:35:02,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 266 flow [2022-12-13 11:35:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:35:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:35:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 539 transitions. [2022-12-13 11:35:02,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5758547008547008 [2022-12-13 11:35:02,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 539 transitions. [2022-12-13 11:35:02,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 539 transitions. [2022-12-13 11:35:02,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:02,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 539 transitions. [2022-12-13 11:35:02,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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 11:35:02,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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 11:35:02,100 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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 11:35:02,100 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 76 flow. Second operand 6 states and 539 transitions. [2022-12-13 11:35:02,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 266 flow [2022-12-13 11:35:02,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 260 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 11:35:02,103 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 126 flow [2022-12-13 11:35:02,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2022-12-13 11:35:02,104 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2022-12-13 11:35:02,105 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 126 flow [2022-12-13 11:35:02,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:35:02,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:02,105 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:02,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:35:02,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:35:02,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:02,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1771820334, now seen corresponding path program 1 times [2022-12-13 11:35:02,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:02,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327835209] [2022-12-13 11:35:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:02,234 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 11:35:02,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:02,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327835209] [2022-12-13 11:35:02,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327835209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:02,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:02,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:35:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154903803] [2022-12-13 11:35:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:02,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:35:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:02,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:35:02,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:35:02,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 156 [2022-12-13 11:35:02,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:02,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:02,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 156 [2022-12-13 11:35:02,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:02,336 INFO L130 PetriNetUnfolder]: 194/364 cut-off events. [2022-12-13 11:35:02,337 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2022-12-13 11:35:02,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 364 events. 194/364 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1423 event pairs, 25 based on Foata normal form. 7/371 useless extension candidates. Maximal degree in co-relation 1172. Up to 202 conditions per place. [2022-12-13 11:35:02,340 INFO L137 encePairwiseOnDemand]: 153/156 looper letters, 34 selfloop transitions, 2 changer transitions 14/50 dead transitions. [2022-12-13 11:35:02,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 382 flow [2022-12-13 11:35:02,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:35:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:35:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2022-12-13 11:35:02,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5657051282051282 [2022-12-13 11:35:02,342 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2022-12-13 11:35:02,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2022-12-13 11:35:02,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:02,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2022-12-13 11:35:02,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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 11:35:02,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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 11:35:02,345 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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 11:35:02,345 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 126 flow. Second operand 4 states and 353 transitions. [2022-12-13 11:35:02,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 382 flow [2022-12-13 11:35:02,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 50 transitions, 312 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-12-13 11:35:02,350 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 109 flow [2022-12-13 11:35:02,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-12-13 11:35:02,351 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-12-13 11:35:02,351 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 109 flow [2022-12-13 11:35:02,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:02,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:02,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:02,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:35:02,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:35:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash 760262020, now seen corresponding path program 2 times [2022-12-13 11:35:02,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:02,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004925972] [2022-12-13 11:35:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:02,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:02,446 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 11:35:02,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:02,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004925972] [2022-12-13 11:35:02,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004925972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:02,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:02,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:35:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068262119] [2022-12-13 11:35:02,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:02,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:35:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:35:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:35:02,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 11:35:02,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 11:35:02,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:02,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 11:35:02,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:02,536 INFO L130 PetriNetUnfolder]: 85/186 cut-off events. [2022-12-13 11:35:02,537 INFO L131 PetriNetUnfolder]: For 201/215 co-relation queries the response was YES. [2022-12-13 11:35:02,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 186 events. 85/186 cut-off events. For 201/215 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 695 event pairs, 18 based on Foata normal form. 20/196 useless extension candidates. Maximal degree in co-relation 564. Up to 64 conditions per place. [2022-12-13 11:35:02,538 INFO L137 encePairwiseOnDemand]: 150/156 looper letters, 21 selfloop transitions, 10 changer transitions 9/43 dead transitions. [2022-12-13 11:35:02,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 262 flow [2022-12-13 11:35:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:35:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:35:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2022-12-13 11:35:02,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5631868131868132 [2022-12-13 11:35:02,541 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 615 transitions. [2022-12-13 11:35:02,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 615 transitions. [2022-12-13 11:35:02,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:02,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 615 transitions. [2022-12-13 11:35:02,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 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 11:35:02,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 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 11:35:02,546 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 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 11:35:02,546 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 109 flow. Second operand 7 states and 615 transitions. [2022-12-13 11:35:02,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 262 flow [2022-12-13 11:35:02,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 246 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 11:35:02,548 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 128 flow [2022-12-13 11:35:02,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2022-12-13 11:35:02,549 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2022-12-13 11:35:02,549 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 128 flow [2022-12-13 11:35:02,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 11:35:02,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:02,550 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 11:35:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:35:02,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:35:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1762641078, now seen corresponding path program 1 times [2022-12-13 11:35:02,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:02,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190250806] [2022-12-13 11:35:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:02,630 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 11:35:02,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:02,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190250806] [2022-12-13 11:35:02,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190250806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:02,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:02,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:35:02,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482765636] [2022-12-13 11:35:02,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:02,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:35:02,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:35:02,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:35:02,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 156 [2022-12-13 11:35:02,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 11:35:02,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:02,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 156 [2022-12-13 11:35:02,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:02,689 INFO L130 PetriNetUnfolder]: 88/201 cut-off events. [2022-12-13 11:35:02,690 INFO L131 PetriNetUnfolder]: For 373/373 co-relation queries the response was YES. [2022-12-13 11:35:02,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 201 events. 88/201 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 849 event pairs, 15 based on Foata normal form. 1/199 useless extension candidates. Maximal degree in co-relation 656. Up to 114 conditions per place. [2022-12-13 11:35:02,690 INFO L137 encePairwiseOnDemand]: 153/156 looper letters, 21 selfloop transitions, 1 changer transitions 21/45 dead transitions. [2022-12-13 11:35:02,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 348 flow [2022-12-13 11:35:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:35:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:35:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2022-12-13 11:35:02,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2022-12-13 11:35:02,692 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2022-12-13 11:35:02,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2022-12-13 11:35:02,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:02,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2022-12-13 11:35:02,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 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 11:35:02,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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 11:35:02,694 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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 11:35:02,694 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 128 flow. Second operand 4 states and 362 transitions. [2022-12-13 11:35:02,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 348 flow [2022-12-13 11:35:02,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 284 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-12-13 11:35:02,696 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 101 flow [2022-12-13 11:35:02,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2022-12-13 11:35:02,696 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2022-12-13 11:35:02,696 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 101 flow [2022-12-13 11:35:02,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 11:35:02,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:02,697 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 11:35:02,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:35:02,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 11:35:02,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:02,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1905602272, now seen corresponding path program 2 times [2022-12-13 11:35:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:02,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998641126] [2022-12-13 11:35:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:02,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:02,774 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 11:35:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:02,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998641126] [2022-12-13 11:35:02,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998641126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:02,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:02,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:35:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794662788] [2022-12-13 11:35:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:02,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:35:02,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:02,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:35:02,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:35:02,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 156 [2022-12-13 11:35:02,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 11:35:02,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:02,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 156 [2022-12-13 11:35:02,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:02,825 INFO L130 PetriNetUnfolder]: 101/216 cut-off events. [2022-12-13 11:35:02,825 INFO L131 PetriNetUnfolder]: For 267/268 co-relation queries the response was YES. [2022-12-13 11:35:02,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 216 events. 101/216 cut-off events. For 267/268 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 850 event pairs, 54 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 680. Up to 103 conditions per place. [2022-12-13 11:35:02,826 INFO L137 encePairwiseOnDemand]: 153/156 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2022-12-13 11:35:02,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 241 flow [2022-12-13 11:35:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:35:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:35:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2022-12-13 11:35:02,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2022-12-13 11:35:02,827 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 356 transitions. [2022-12-13 11:35:02,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 356 transitions. [2022-12-13 11:35:02,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:02,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 356 transitions. [2022-12-13 11:35:02,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 11:35:02,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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 11:35:02,829 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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 11:35:02,829 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 101 flow. Second operand 4 states and 356 transitions. [2022-12-13 11:35:02,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 241 flow [2022-12-13 11:35:02,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:35:02,830 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2022-12-13 11:35:02,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2022-12-13 11:35:02,831 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2022-12-13 11:35:02,831 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2022-12-13 11:35:02,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 11:35:02,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 11:35:02,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 11:35:02,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 11:35:02,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 11:35:02,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:35:02,834 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-12-13 11:35:02,836 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:35:02,836 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:35:02,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:35:02 BasicIcfg [2022-12-13 11:35:02,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:35:02,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:35:02,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:35:02,839 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:35:02,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:34:59" (3/4) ... [2022-12-13 11:35:02,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 11:35:02,847 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 11:35:02,847 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 11:35:02,847 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 11:35:02,849 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 11:35:02,850 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 11:35:02,850 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 11:35:02,850 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 11:35:02,873 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:35:02,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:35:02,873 INFO L158 Benchmark]: Toolchain (without parser) took 3924.32ms. Allocated memory is still 140.5MB. Free memory was 109.3MB in the beginning and 86.2MB in the end (delta: 23.1MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-12-13 11:35:02,873 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:35:02,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.35ms. Allocated memory is still 140.5MB. Free memory was 109.0MB in the beginning and 85.3MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 11:35:02,874 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.43ms. Allocated memory is still 140.5MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:35:02,874 INFO L158 Benchmark]: Boogie Preprocessor took 21.86ms. Allocated memory is still 140.5MB. Free memory was 83.2MB in the beginning and 81.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:35:02,874 INFO L158 Benchmark]: RCFGBuilder took 306.59ms. Allocated memory is still 140.5MB. Free memory was 81.6MB in the beginning and 68.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:35:02,874 INFO L158 Benchmark]: TraceAbstraction took 3136.77ms. Allocated memory is still 140.5MB. Free memory was 67.9MB in the beginning and 89.4MB in the end (delta: -21.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:35:02,875 INFO L158 Benchmark]: Witness Printer took 33.56ms. Allocated memory is still 140.5MB. Free memory was 89.4MB in the beginning and 86.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 11:35:02,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.35ms. Allocated memory is still 140.5MB. Free memory was 109.0MB in the beginning and 85.3MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.43ms. Allocated memory is still 140.5MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.86ms. Allocated memory is still 140.5MB. Free memory was 83.2MB in the beginning and 81.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 306.59ms. Allocated memory is still 140.5MB. Free memory was 81.6MB in the beginning and 68.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3136.77ms. Allocated memory is still 140.5MB. Free memory was 67.9MB in the beginning and 89.4MB in the end (delta: -21.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.56ms. Allocated memory is still 140.5MB. Free memory was 89.4MB in the beginning and 86.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 85 PlacesBefore, 27 PlacesAfterwards, 76 TransitionsBefore, 17 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 1851 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1020, independent: 948, independent conditional: 0, independent unconditional: 948, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 606, independent: 580, independent conditional: 0, independent unconditional: 580, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1020, independent: 368, independent conditional: 0, independent unconditional: 368, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 606, unknown conditional: 0, unknown unconditional: 606] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 194 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 151 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 457 IncrementalHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 26 mSDtfsCounter, 457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 11:35:02,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038d446d-f0b3-47dc-adfe-f3d34734e718/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE