./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/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_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/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_1b2a098c-2172-478b-853a-69b3ca1036e5/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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- 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 15:28:45,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:28:45,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:28:45,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:28:45,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:28:45,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:28:45,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:28:45,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:28:45,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:28:45,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:28:45,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:28:45,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:28:45,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:28:45,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:28:45,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:28:45,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:28:45,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:28:45,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:28:45,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:28:45,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:28:45,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:28:45,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:28:45,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:28:45,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:28:45,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:28:45,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:28:45,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:28:45,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:28:45,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:28:45,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:28:45,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:28:45,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:28:45,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:28:45,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:28:45,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:28:45,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:28:45,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:28:45,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:28:45,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:28:45,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:28:45,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:28:45,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:28:45,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:28:45,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:28:45,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:28:45,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:28:45,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:28:45,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:28:45,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:28:45,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:28:45,718 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:28:45,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:28:45,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:28:45,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:28:45,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:28:45,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:28:45,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:28:45,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:28:45,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:28:45,720 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:28:45,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:28:45,720 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:28:45,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:28:45,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:28:45,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:28:45,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:28:45,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:28:45,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:28:45,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:28:45,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:28:45,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:28:45,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:28:45,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:28:45,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:28:45,722 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:28:45,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:28:45,723 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:28:45,723 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_1b2a098c-2172-478b-853a-69b3ca1036e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2022-12-13 15:28:45,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:28:45,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:28:45,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:28:45,935 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:28:45,936 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:28:45,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 15:28:48,443 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:28:48,625 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:28:48,625 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 15:28:48,635 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/data/b0fc0ab2a/0ae37e21b5df46539005962cad1a6c5e/FLAG33e36435a [2022-12-13 15:28:49,013 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/data/b0fc0ab2a/0ae37e21b5df46539005962cad1a6c5e [2022-12-13 15:28:49,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:28:49,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:28:49,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:28:49,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:28:49,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:28:49,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113c8fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49, skipping insertion in model container [2022-12-13 15:28:49,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:28:49,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:28:49,183 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_1b2a098c-2172-478b-853a-69b3ca1036e5/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 15:28:49,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:28:49,301 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:28:49,309 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_1b2a098c-2172-478b-853a-69b3ca1036e5/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 15:28:49,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:28:49,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:28:49,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:28:49,355 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:28:49,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49 WrapperNode [2022-12-13 15:28:49,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:28:49,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:28:49,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:28:49,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:28:49,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,385 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-12-13 15:28:49,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:28:49,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:28:49,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:28:49,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:28:49,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:28:49,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:28:49,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:28:49,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:28:49,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (1/1) ... [2022-12-13 15:28:49,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:28:49,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:28:49,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:28:49,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:28:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:28:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:28:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:28:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:28:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:28:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 15:28:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 15:28:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 15:28:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 15:28:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 15:28:49,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 15:28:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 15:28:49,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 15:28:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:28:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:28:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:28:49,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:28:49,461 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 15:28:49,560 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:28:49,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:28:49,724 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:28:49,730 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:28:49,730 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:28:49,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:28:49 BoogieIcfgContainer [2022-12-13 15:28:49,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:28:49,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:28:49,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:28:49,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:28:49,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:28:49" (1/3) ... [2022-12-13 15:28:49,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772b3a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:28:49, skipping insertion in model container [2022-12-13 15:28:49,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:28:49" (2/3) ... [2022-12-13 15:28:49,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772b3a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:28:49, skipping insertion in model container [2022-12-13 15:28:49,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:28:49" (3/3) ... [2022-12-13 15:28:49,739 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 15:28:49,745 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:28:49,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:28:49,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:28:49,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:28:49,804 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:28:49,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 232 flow [2022-12-13 15:28:49,866 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2022-12-13 15:28:49,866 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:28:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-12-13 15:28:49,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 106 transitions, 232 flow [2022-12-13 15:28:49,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 86 transitions, 184 flow [2022-12-13 15:28:49,875 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:28:49,883 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 86 transitions, 184 flow [2022-12-13 15:28:49,885 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 86 transitions, 184 flow [2022-12-13 15:28:49,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 86 transitions, 184 flow [2022-12-13 15:28:49,916 INFO L130 PetriNetUnfolder]: 1/86 cut-off events. [2022-12-13 15:28:49,916 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:28:49,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 1/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-12-13 15:28:49,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 1630 [2022-12-13 15:28:51,540 INFO L134 LiptonReduction]: Checked pairs total: 2475 [2022-12-13 15:28:51,540 INFO L136 LiptonReduction]: Total number of compositions: 70 [2022-12-13 15:28:51,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:28:51,562 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;@7b8daa60, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:28:51,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 15:28:51,568 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-12-13 15:28:51,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:28:51,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:51,569 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:51,569 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 2 more)] === [2022-12-13 15:28:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:51,573 INFO L85 PathProgramCache]: Analyzing trace with hash -173970400, now seen corresponding path program 1 times [2022-12-13 15:28:51,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:51,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729190416] [2022-12-13 15:28:51,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:51,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:51,895 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 15:28:51,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:51,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729190416] [2022-12-13 15:28:51,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729190416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:51,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:51,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:28:51,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828103070] [2022-12-13 15:28:51,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:28:51,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:51,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:28:51,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:28:51,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 176 [2022-12-13 15:28:51,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 15:28:51,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:51,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 176 [2022-12-13 15:28:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:52,081 INFO L130 PetriNetUnfolder]: 623/992 cut-off events. [2022-12-13 15:28:52,082 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 15:28:52,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 992 events. 623/992 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4566 event pairs, 161 based on Foata normal form. 27/1018 useless extension candidates. Maximal degree in co-relation 1984. Up to 688 conditions per place. [2022-12-13 15:28:52,087 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 25 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2022-12-13 15:28:52,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 127 flow [2022-12-13 15:28:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:28:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:28:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2022-12-13 15:28:52,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2022-12-13 15:28:52,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2022-12-13 15:28:52,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2022-12-13 15:28:52,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:52,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2022-12-13 15:28:52,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 15:28:52,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 15:28:52,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 15:28:52,109 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 319 transitions. [2022-12-13 15:28:52,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 127 flow [2022-12-13 15:28:52,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 122 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:28:52,112 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 56 flow [2022-12-13 15:28:52,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2022-12-13 15:28:52,116 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-13 15:28:52,117 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 56 flow [2022-12-13 15:28:52,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 15:28:52,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:52,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:28:52,117 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 2 more)] === [2022-12-13 15:28:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1098115875, now seen corresponding path program 1 times [2022-12-13 15:28:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:52,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917459974] [2022-12-13 15:28:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:52,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:52,239 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 15:28:52,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:52,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917459974] [2022-12-13 15:28:52,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917459974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:52,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:52,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:28:52,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362348599] [2022-12-13 15:28:52,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:52,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:28:52,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:52,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:28:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:28:52,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 176 [2022-12-13 15:28:52,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 15:28:52,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:52,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 176 [2022-12-13 15:28:52,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:52,444 INFO L130 PetriNetUnfolder]: 1560/2283 cut-off events. [2022-12-13 15:28:52,444 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2022-12-13 15:28:52,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 2283 events. 1560/2283 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9729 event pairs, 243 based on Foata normal form. 84/2367 useless extension candidates. Maximal degree in co-relation 5008. Up to 1302 conditions per place. [2022-12-13 15:28:52,452 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2022-12-13 15:28:52,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 191 flow [2022-12-13 15:28:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:28:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:28:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2022-12-13 15:28:52,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5738636363636364 [2022-12-13 15:28:52,455 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2022-12-13 15:28:52,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2022-12-13 15:28:52,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:52,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2022-12-13 15:28:52,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 15:28:52,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 15:28:52,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 15:28:52,458 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states and 404 transitions. [2022-12-13 15:28:52,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 191 flow [2022-12-13 15:28:52,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:28:52,459 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 94 flow [2022-12-13 15:28:52,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2022-12-13 15:28:52,460 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2022-12-13 15:28:52,460 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 94 flow [2022-12-13 15:28:52,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 15:28:52,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:52,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:52,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:28:52,461 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 2 more)] === [2022-12-13 15:28:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash 353259916, now seen corresponding path program 1 times [2022-12-13 15:28:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:52,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227590544] [2022-12-13 15:28:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:52,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:52,544 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 15:28:52,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:52,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227590544] [2022-12-13 15:28:52,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227590544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:52,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:52,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:28:52,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186857447] [2022-12-13 15:28:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:52,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:28:52,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:52,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:28:52,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:28:52,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 176 [2022-12-13 15:28:52,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 15:28:52,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:52,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 176 [2022-12-13 15:28:52,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:52,689 INFO L130 PetriNetUnfolder]: 1055/1712 cut-off events. [2022-12-13 15:28:52,689 INFO L131 PetriNetUnfolder]: For 775/781 co-relation queries the response was YES. [2022-12-13 15:28:52,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4296 conditions, 1712 events. 1055/1712 cut-off events. For 775/781 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8905 event pairs, 234 based on Foata normal form. 21/1685 useless extension candidates. Maximal degree in co-relation 4283. Up to 1228 conditions per place. [2022-12-13 15:28:52,696 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 32 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2022-12-13 15:28:52,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 205 flow [2022-12-13 15:28:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:28:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:28:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2022-12-13 15:28:52,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6117424242424242 [2022-12-13 15:28:52,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2022-12-13 15:28:52,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2022-12-13 15:28:52,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:52,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2022-12-13 15:28:52,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:28:52,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 15:28:52,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 15:28:52,702 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 94 flow. Second operand 3 states and 323 transitions. [2022-12-13 15:28:52,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 205 flow [2022-12-13 15:28:52,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:28:52,703 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 105 flow [2022-12-13 15:28:52,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2022-12-13 15:28:52,704 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2022-12-13 15:28:52,704 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 105 flow [2022-12-13 15:28:52,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 15:28:52,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:52,704 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:52,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:28:52,705 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 2 more)] === [2022-12-13 15:28:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1933845449, now seen corresponding path program 1 times [2022-12-13 15:28:52,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:52,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421286358] [2022-12-13 15:28:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:52,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:52,790 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 15:28:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421286358] [2022-12-13 15:28:52,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421286358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:52,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:52,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:28:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360332387] [2022-12-13 15:28:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:52,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:28:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:28:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:28:52,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 176 [2022-12-13 15:28:52,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 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 15:28:52,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:52,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 176 [2022-12-13 15:28:52,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:52,984 INFO L130 PetriNetUnfolder]: 1399/2200 cut-off events. [2022-12-13 15:28:52,984 INFO L131 PetriNetUnfolder]: For 1971/2006 co-relation queries the response was YES. [2022-12-13 15:28:52,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5900 conditions, 2200 events. 1399/2200 cut-off events. For 1971/2006 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 12159 event pairs, 345 based on Foata normal form. 78/2205 useless extension candidates. Maximal degree in co-relation 5884. Up to 892 conditions per place. [2022-12-13 15:28:52,992 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 35 selfloop transitions, 3 changer transitions 9/51 dead transitions. [2022-12-13 15:28:52,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 296 flow [2022-12-13 15:28:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:28:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:28:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2022-12-13 15:28:52,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5965909090909091 [2022-12-13 15:28:52,993 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2022-12-13 15:28:52,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2022-12-13 15:28:52,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:52,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2022-12-13 15:28:52,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.0) internal successors, (420), 4 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 15:28:52,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 15:28:52,996 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 15:28:52,997 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 105 flow. Second operand 4 states and 420 transitions. [2022-12-13 15:28:52,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 296 flow [2022-12-13 15:28:52,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:28:52,998 INFO L231 Difference]: Finished difference. Result has 41 places, 25 transitions, 113 flow [2022-12-13 15:28:52,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=41, PETRI_TRANSITIONS=25} [2022-12-13 15:28:52,999 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2022-12-13 15:28:52,999 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 113 flow [2022-12-13 15:28:53,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 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 15:28:53,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:53,000 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:53,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:28:53,000 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 2 more)] === [2022-12-13 15:28:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash 22445939, now seen corresponding path program 1 times [2022-12-13 15:28:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:53,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453931908] [2022-12-13 15:28:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:53,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:53,099 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 15:28:53,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:53,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453931908] [2022-12-13 15:28:53,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453931908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:53,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:53,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:28:53,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612336032] [2022-12-13 15:28:53,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:53,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:28:53,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:53,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:28:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:28:53,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 176 [2022-12-13 15:28:53,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 15:28:53,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:53,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 176 [2022-12-13 15:28:53,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:53,297 INFO L130 PetriNetUnfolder]: 1333/2026 cut-off events. [2022-12-13 15:28:53,297 INFO L131 PetriNetUnfolder]: For 2316/2316 co-relation queries the response was YES. [2022-12-13 15:28:53,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5662 conditions, 2026 events. 1333/2026 cut-off events. For 2316/2316 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8974 event pairs, 329 based on Foata normal form. 44/2070 useless extension candidates. Maximal degree in co-relation 5644. Up to 888 conditions per place. [2022-12-13 15:28:53,303 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 38 selfloop transitions, 7 changer transitions 7/52 dead transitions. [2022-12-13 15:28:53,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 306 flow [2022-12-13 15:28:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:28:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:28:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2022-12-13 15:28:53,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2022-12-13 15:28:53,305 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2022-12-13 15:28:53,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2022-12-13 15:28:53,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:53,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2022-12-13 15:28:53,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:28:53,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 15:28:53,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 15:28:53,310 INFO L175 Difference]: Start difference. First operand has 41 places, 25 transitions, 113 flow. Second operand 5 states and 500 transitions. [2022-12-13 15:28:53,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 306 flow [2022-12-13 15:28:53,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 284 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 15:28:53,314 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 133 flow [2022-12-13 15:28:53,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2022-12-13 15:28:53,315 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2022-12-13 15:28:53,315 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 133 flow [2022-12-13 15:28:53,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 15:28:53,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:53,316 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:53,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:28:53,316 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 2 more)] === [2022-12-13 15:28:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash 224654599, now seen corresponding path program 1 times [2022-12-13 15:28:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:53,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389065487] [2022-12-13 15:28:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:53,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:28:53,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:53,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389065487] [2022-12-13 15:28:53,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389065487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:53,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:53,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:28:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012189550] [2022-12-13 15:28:53,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:53,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:28:53,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:53,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:28:53,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:28:53,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 176 [2022-12-13 15:28:53,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 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 15:28:53,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:53,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 176 [2022-12-13 15:28:53,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:53,553 INFO L130 PetriNetUnfolder]: 770/1195 cut-off events. [2022-12-13 15:28:53,553 INFO L131 PetriNetUnfolder]: For 1533/1533 co-relation queries the response was YES. [2022-12-13 15:28:53,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3370 conditions, 1195 events. 770/1195 cut-off events. For 1533/1533 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4992 event pairs, 134 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3352. Up to 600 conditions per place. [2022-12-13 15:28:53,557 INFO L137 encePairwiseOnDemand]: 171/176 looper letters, 33 selfloop transitions, 7 changer transitions 1/41 dead transitions. [2022-12-13 15:28:53,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 260 flow [2022-12-13 15:28:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:28:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:28:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2022-12-13 15:28:53,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5653409090909091 [2022-12-13 15:28:53,559 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2022-12-13 15:28:53,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2022-12-13 15:28:53,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:53,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2022-12-13 15:28:53,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 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 15:28:53,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 15:28:53,562 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 15:28:53,562 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 133 flow. Second operand 4 states and 398 transitions. [2022-12-13 15:28:53,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 260 flow [2022-12-13 15:28:53,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 240 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 15:28:53,566 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 145 flow [2022-12-13 15:28:53,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2022-12-13 15:28:53,567 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2022-12-13 15:28:53,567 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 145 flow [2022-12-13 15:28:53,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 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 15:28:53,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:53,567 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:53,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:28:53,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:28:53,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:53,568 INFO L85 PathProgramCache]: Analyzing trace with hash -863875867, now seen corresponding path program 2 times [2022-12-13 15:28:53,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:53,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398340486] [2022-12-13 15:28:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:53,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:53,654 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 15:28:53,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:53,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398340486] [2022-12-13 15:28:53,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398340486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:53,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:53,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:28:53,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998361264] [2022-12-13 15:28:53,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:53,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:28:53,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:53,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:28:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:28:53,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 176 [2022-12-13 15:28:53,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 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 15:28:53,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:53,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 176 [2022-12-13 15:28:53,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:53,767 INFO L130 PetriNetUnfolder]: 525/887 cut-off events. [2022-12-13 15:28:53,767 INFO L131 PetriNetUnfolder]: For 1044/1055 co-relation queries the response was YES. [2022-12-13 15:28:53,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 887 events. 525/887 cut-off events. For 1044/1055 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4417 event pairs, 166 based on Foata normal form. 32/879 useless extension candidates. Maximal degree in co-relation 2474. Up to 600 conditions per place. [2022-12-13 15:28:53,770 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 35 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2022-12-13 15:28:53,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 500 flow [2022-12-13 15:28:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:28:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:28:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 514 transitions. [2022-12-13 15:28:53,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5840909090909091 [2022-12-13 15:28:53,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 514 transitions. [2022-12-13 15:28:53,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 514 transitions. [2022-12-13 15:28:53,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:53,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 514 transitions. [2022-12-13 15:28:53,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:28:53,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 15:28:53,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 15:28:53,774 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 145 flow. Second operand 5 states and 514 transitions. [2022-12-13 15:28:53,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 500 flow [2022-12-13 15:28:53,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 71 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:28:53,776 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 178 flow [2022-12-13 15:28:53,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2022-12-13 15:28:53,777 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2022-12-13 15:28:53,777 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 178 flow [2022-12-13 15:28:53,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 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 15:28:53,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:53,778 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:53,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:28:53,778 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:28:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1659410691, now seen corresponding path program 1 times [2022-12-13 15:28:53,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:53,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785908056] [2022-12-13 15:28:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:53,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:53,880 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 15:28:53,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:53,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785908056] [2022-12-13 15:28:53,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785908056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:53,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:53,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:28:53,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629802523] [2022-12-13 15:28:53,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:53,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:28:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:53,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:28:53,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:28:53,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 176 [2022-12-13 15:28:53,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 15:28:53,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:53,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 176 [2022-12-13 15:28:53,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:54,018 INFO L130 PetriNetUnfolder]: 386/681 cut-off events. [2022-12-13 15:28:54,018 INFO L131 PetriNetUnfolder]: For 1232/1383 co-relation queries the response was YES. [2022-12-13 15:28:54,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 681 events. 386/681 cut-off events. For 1232/1383 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3304 event pairs, 51 based on Foata normal form. 49/705 useless extension candidates. Maximal degree in co-relation 2730. Up to 464 conditions per place. [2022-12-13 15:28:54,022 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 43 selfloop transitions, 9 changer transitions 24/80 dead transitions. [2022-12-13 15:28:54,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 604 flow [2022-12-13 15:28:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:28:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:28:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 617 transitions. [2022-12-13 15:28:54,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.584280303030303 [2022-12-13 15:28:54,024 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 617 transitions. [2022-12-13 15:28:54,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 617 transitions. [2022-12-13 15:28:54,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:54,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 617 transitions. [2022-12-13 15:28:54,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.83333333333333) internal successors, (617), 6 states have internal predecessors, (617), 0 states have call successors, (0), 0 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 15:28:54,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:28:54,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:28:54,029 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 178 flow. Second operand 6 states and 617 transitions. [2022-12-13 15:28:54,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 604 flow [2022-12-13 15:28:54,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 80 transitions, 597 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 15:28:54,031 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 243 flow [2022-12-13 15:28:54,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2022-12-13 15:28:54,032 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2022-12-13 15:28:54,032 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 243 flow [2022-12-13 15:28:54,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 15:28:54,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:54,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:54,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:28:54,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:28:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash 97859705, now seen corresponding path program 1 times [2022-12-13 15:28:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:54,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380282357] [2022-12-13 15:28:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:54,127 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 15:28:54,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:54,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380282357] [2022-12-13 15:28:54,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380282357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:54,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:54,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:28:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249155922] [2022-12-13 15:28:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:54,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:28:54,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:28:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:28:54,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 176 [2022-12-13 15:28:54,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 15:28:54,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:54,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 176 [2022-12-13 15:28:54,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:54,269 INFO L130 PetriNetUnfolder]: 247/460 cut-off events. [2022-12-13 15:28:54,269 INFO L131 PetriNetUnfolder]: For 1362/1568 co-relation queries the response was YES. [2022-12-13 15:28:54,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 460 events. 247/460 cut-off events. For 1362/1568 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2053 event pairs, 15 based on Foata normal form. 61/506 useless extension candidates. Maximal degree in co-relation 2292. Up to 305 conditions per place. [2022-12-13 15:28:54,272 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 48 selfloop transitions, 13 changer transitions 18/83 dead transitions. [2022-12-13 15:28:54,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 712 flow [2022-12-13 15:28:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:28:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:28:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 718 transitions. [2022-12-13 15:28:54,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5827922077922078 [2022-12-13 15:28:54,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 718 transitions. [2022-12-13 15:28:54,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 718 transitions. [2022-12-13 15:28:54,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:54,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 718 transitions. [2022-12-13 15:28:54,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 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 15:28:54,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 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 15:28:54,280 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 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 15:28:54,280 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 243 flow. Second operand 7 states and 718 transitions. [2022-12-13 15:28:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 712 flow [2022-12-13 15:28:54,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 650 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-12-13 15:28:54,286 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 293 flow [2022-12-13 15:28:54,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2022-12-13 15:28:54,287 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2022-12-13 15:28:54,287 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 293 flow [2022-12-13 15:28:54,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 15:28:54,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:54,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:54,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:28:54,288 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:28:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash -126079009, now seen corresponding path program 1 times [2022-12-13 15:28:54,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:54,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307324072] [2022-12-13 15:28:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:54,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:54,412 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 15:28:54,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:54,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307324072] [2022-12-13 15:28:54,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307324072] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:54,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:54,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:28:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472602879] [2022-12-13 15:28:54,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:54,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:28:54,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:28:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:28:54,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 176 [2022-12-13 15:28:54,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 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 15:28:54,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:54,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 176 [2022-12-13 15:28:54,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:54,536 INFO L130 PetriNetUnfolder]: 312/556 cut-off events. [2022-12-13 15:28:54,536 INFO L131 PetriNetUnfolder]: For 1872/1872 co-relation queries the response was YES. [2022-12-13 15:28:54,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 556 events. 312/556 cut-off events. For 1872/1872 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2221 event pairs, 38 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2666. Up to 264 conditions per place. [2022-12-13 15:28:54,539 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 41 selfloop transitions, 6 changer transitions 46/93 dead transitions. [2022-12-13 15:28:54,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 922 flow [2022-12-13 15:28:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:28:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:28:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2022-12-13 15:28:54,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5596590909090909 [2022-12-13 15:28:54,541 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 591 transitions. [2022-12-13 15:28:54,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 591 transitions. [2022-12-13 15:28:54,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:54,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 591 transitions. [2022-12-13 15:28:54,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 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 15:28:54,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:28:54,546 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:28:54,546 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 293 flow. Second operand 6 states and 591 transitions. [2022-12-13 15:28:54,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 922 flow [2022-12-13 15:28:54,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 93 transitions, 740 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-12-13 15:28:54,555 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 233 flow [2022-12-13 15:28:54,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2022-12-13 15:28:54,555 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2022-12-13 15:28:54,555 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 233 flow [2022-12-13 15:28:54,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 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 15:28:54,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:54,556 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:54,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:28:54,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:28:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:54,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1085857105, now seen corresponding path program 2 times [2022-12-13 15:28:54,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:54,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407335551] [2022-12-13 15:28:54,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:54,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:54,679 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 15:28:54,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:54,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407335551] [2022-12-13 15:28:54,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407335551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:54,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:54,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:28:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564681494] [2022-12-13 15:28:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:28:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:28:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:28:54,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 176 [2022-12-13 15:28:54,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 0 states have call successors, (0), 0 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 15:28:54,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:54,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 176 [2022-12-13 15:28:54,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:54,781 INFO L130 PetriNetUnfolder]: 118/238 cut-off events. [2022-12-13 15:28:54,781 INFO L131 PetriNetUnfolder]: For 573/690 co-relation queries the response was YES. [2022-12-13 15:28:54,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 238 events. 118/238 cut-off events. For 573/690 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 883 event pairs, 8 based on Foata normal form. 45/275 useless extension candidates. Maximal degree in co-relation 965. Up to 82 conditions per place. [2022-12-13 15:28:54,782 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 25 selfloop transitions, 17 changer transitions 18/62 dead transitions. [2022-12-13 15:28:54,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 513 flow [2022-12-13 15:28:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:28:54,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:28:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions. [2022-12-13 15:28:54,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674715909090909 [2022-12-13 15:28:54,784 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions. [2022-12-13 15:28:54,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions. [2022-12-13 15:28:54,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:54,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions. [2022-12-13 15:28:54,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 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 15:28:54,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 176.0) internal successors, (1584), 9 states have internal predecessors, (1584), 0 states have call successors, (0), 0 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 15:28:54,787 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 176.0) internal successors, (1584), 9 states have internal predecessors, (1584), 0 states have call successors, (0), 0 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 15:28:54,787 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 233 flow. Second operand 8 states and 799 transitions. [2022-12-13 15:28:54,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 513 flow [2022-12-13 15:28:54,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 454 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-12-13 15:28:54,790 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 222 flow [2022-12-13 15:28:54,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2022-12-13 15:28:54,790 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2022-12-13 15:28:54,790 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 222 flow [2022-12-13 15:28:54,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 0 states have call successors, (0), 0 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 15:28:54,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:28:54,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:54,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:28:54,791 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:28:54,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:54,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1877918860, now seen corresponding path program 1 times [2022-12-13 15:28:54,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:54,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158105703] [2022-12-13 15:28:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:54,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:54,870 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 15:28:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158105703] [2022-12-13 15:28:54,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158105703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:54,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:28:54,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:28:54,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305678811] [2022-12-13 15:28:54,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:54,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:28:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:54,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:28:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:28:54,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 176 [2022-12-13 15:28:54,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 15:28:54,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:28:54,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 176 [2022-12-13 15:28:54,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:28:54,918 INFO L130 PetriNetUnfolder]: 66/135 cut-off events. [2022-12-13 15:28:54,918 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2022-12-13 15:28:54,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 135 events. 66/135 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 330 event pairs, 13 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 569. Up to 80 conditions per place. [2022-12-13 15:28:54,918 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2022-12-13 15:28:54,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 375 flow [2022-12-13 15:28:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:28:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:28:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2022-12-13 15:28:54,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5767045454545454 [2022-12-13 15:28:54,920 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2022-12-13 15:28:54,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2022-12-13 15:28:54,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:28:54,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2022-12-13 15:28:54,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 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 15:28:54,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 15:28:54,921 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 15:28:54,921 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 222 flow. Second operand 4 states and 406 transitions. [2022-12-13 15:28:54,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 375 flow [2022-12-13 15:28:54,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 296 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-12-13 15:28:54,923 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2022-12-13 15:28:54,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2022-12-13 15:28:54,923 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2022-12-13 15:28:54,923 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2022-12-13 15:28:54,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 15:28:54,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-13 15:28:54,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-13 15:28:54,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-13 15:28:54,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-13 15:28:54,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-13 15:28:54,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:28:54,928 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:54,930 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:28:54,930 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:28:54,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:28:54 BasicIcfg [2022-12-13 15:28:54,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:28:54,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:28:54,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:28:54,933 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:28:54,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:28:49" (3/4) ... [2022-12-13 15:28:54,936 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 15:28:54,941 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 15:28:54,941 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 15:28:54,941 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 15:28:54,941 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-12-13 15:28:54,945 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-13 15:28:54,945 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 15:28:54,945 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 15:28:54,945 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 15:28:54,969 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:28:54,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:28:54,970 INFO L158 Benchmark]: Toolchain (without parser) took 5954.47ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 114.7MB in the beginning and 101.7MB in the end (delta: 13.1MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2022-12-13 15:28:54,970 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory was 120.7MB in the beginning and 120.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:28:54,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.13ms. Allocated memory is still 151.0MB. Free memory was 114.7MB in the beginning and 90.8MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 15:28:54,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.98ms. Allocated memory is still 151.0MB. Free memory was 90.8MB in the beginning and 88.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:28:54,971 INFO L158 Benchmark]: Boogie Preprocessor took 16.67ms. Allocated memory is still 151.0MB. Free memory was 88.7MB in the beginning and 87.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:28:54,972 INFO L158 Benchmark]: RCFGBuilder took 329.90ms. Allocated memory is still 151.0MB. Free memory was 87.0MB in the beginning and 72.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 15:28:54,972 INFO L158 Benchmark]: TraceAbstraction took 5198.96ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 71.9MB in the beginning and 104.8MB in the end (delta: -32.9MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2022-12-13 15:28:54,972 INFO L158 Benchmark]: Witness Printer took 36.27ms. Allocated memory is still 182.5MB. Free memory was 104.8MB in the beginning and 101.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:28:54,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory was 120.7MB in the beginning and 120.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.13ms. Allocated memory is still 151.0MB. Free memory was 114.7MB in the beginning and 90.8MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.98ms. Allocated memory is still 151.0MB. Free memory was 90.8MB in the beginning and 88.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.67ms. Allocated memory is still 151.0MB. Free memory was 88.7MB in the beginning and 87.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.90ms. Allocated memory is still 151.0MB. Free memory was 87.0MB in the beginning and 72.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5198.96ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 71.9MB in the beginning and 104.8MB in the end (delta: -32.9MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. * Witness Printer took 36.27ms. Allocated memory is still 182.5MB. Free memory was 104.8MB in the beginning and 101.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 98 PlacesBefore, 33 PlacesAfterwards, 86 TransitionsBefore, 20 TransitionsAfterwards, 1630 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 2475 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1393, independent: 1320, independent conditional: 0, independent unconditional: 1320, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 825, independent: 799, independent conditional: 0, independent unconditional: 799, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1393, independent: 521, independent conditional: 0, independent unconditional: 521, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 825, unknown conditional: 0, unknown unconditional: 825] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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 9 procedures, 135 locations, 5 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: 5.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 489 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 894 IncrementalHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 50 mSDtfsCounter, 894 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=9, InterpolantAutomatonStates: 59, 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, 1.1s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 15:28:54,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2a098c-2172-478b-853a-69b3ca1036e5/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