./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/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_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- 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 18:31:32,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:31:32,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:31:32,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:31:32,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:31:32,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:31:32,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:31:32,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:31:32,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:31:32,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:31:32,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:31:32,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:31:32,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:31:32,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:31:32,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:31:32,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:31:32,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:31:32,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:31:32,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:31:32,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:31:32,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:31:32,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:31:32,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:31:32,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:31:32,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:31:32,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:31:32,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:31:32,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:31:32,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:31:32,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:31:32,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:31:32,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:31:32,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:31:32,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:31:32,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:31:32,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:31:32,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:31:32,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:31:32,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:31:32,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:31:32,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:31:32,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 18:31:32,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:31:32,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:31:32,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:31:32,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:31:32,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:31:32,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:31:32,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:31:32,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:31:32,351 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:31:32,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:31:32,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:31:32,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:31:32,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:31:32,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:31:32,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:31:32,352 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 18:31:32,352 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 18:31:32,352 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 18:31:32,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:31:32,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:31:32,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:31:32,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:31:32,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:31:32,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:31:32,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:31:32,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:31:32,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:31:32,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:31:32,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:31:32,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:31:32,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:31:32,355 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:31:32,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:31:32,355 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:31:32,356 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_305296f9-b4ea-4cf5-a119-310b25514d72/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2022-12-13 18:31:32,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:31:32,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:31:32,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:31:32,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:31:32,581 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:31:32,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 18:31:35,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:31:35,439 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:31:35,440 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 18:31:35,450 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/data/18310958c/2ba710a10fd14a32be9224a1eabd697d/FLAG670f89e26 [2022-12-13 18:31:35,462 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/data/18310958c/2ba710a10fd14a32be9224a1eabd697d [2022-12-13 18:31:35,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:31:35,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:31:35,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:31:35,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:31:35,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:31:35,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465e8fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35, skipping insertion in model container [2022-12-13 18:31:35,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:31:35,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:31:35,620 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_305296f9-b4ea-4cf5-a119-310b25514d72/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 18:31:35,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:31:35,729 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:31:35,737 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_305296f9-b4ea-4cf5-a119-310b25514d72/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 18:31:35,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:31:35,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:31:35,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:31:35,780 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:31:35,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35 WrapperNode [2022-12-13 18:31:35,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:31:35,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:31:35,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:31:35,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:31:35,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,809 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-12-13 18:31:35,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:31:35,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:31:35,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:31:35,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:31:35,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,824 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:31:35,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:31:35,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:31:35,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:31:35,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (1/1) ... [2022-12-13 18:31:35,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:31:35,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:35,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:31:35,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:31:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:31:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:31:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:31:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:31:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:31:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 18:31:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 18:31:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 18:31:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 18:31:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 18:31:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 18:31:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:31:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:31:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:31:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:31:35,888 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 18:31:35,982 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:31:35,983 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:31:36,142 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:31:36,148 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:31:36,148 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:31:36,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:31:36 BoogieIcfgContainer [2022-12-13 18:31:36,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:31:36,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:31:36,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:31:36,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:31:36,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:31:35" (1/3) ... [2022-12-13 18:31:36,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b27fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:31:36, skipping insertion in model container [2022-12-13 18:31:36,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:35" (2/3) ... [2022-12-13 18:31:36,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b27fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:31:36, skipping insertion in model container [2022-12-13 18:31:36,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:31:36" (3/3) ... [2022-12-13 18:31:36,156 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 18:31:36,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:31:36,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 18:31:36,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:31:36,215 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:31:36,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 101 transitions, 217 flow [2022-12-13 18:31:36,285 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2022-12-13 18:31:36,285 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:31:36,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 98 events. 2/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-12-13 18:31:36,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 101 transitions, 217 flow [2022-12-13 18:31:36,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 93 transitions, 195 flow [2022-12-13 18:31:36,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:31:36,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 93 transitions, 195 flow [2022-12-13 18:31:36,315 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 93 transitions, 195 flow [2022-12-13 18:31:36,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 195 flow [2022-12-13 18:31:36,343 INFO L130 PetriNetUnfolder]: 2/93 cut-off events. [2022-12-13 18:31:36,343 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:31:36,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-12-13 18:31:36,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2022-12-13 18:31:38,414 INFO L134 LiptonReduction]: Checked pairs total: 3092 [2022-12-13 18:31:38,415 INFO L136 LiptonReduction]: Total number of compositions: 95 [2022-12-13 18:31:38,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:31:38,435 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2f8857c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:31:38,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 18:31:38,437 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 18:31:38,437 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:31:38,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:38,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:31:38,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:38,443 INFO L85 PathProgramCache]: Analyzing trace with hash 356, now seen corresponding path program 1 times [2022-12-13 18:31:38,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:38,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565235413] [2022-12-13 18:31:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:38,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:38,542 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 18:31:38,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:38,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565235413] [2022-12-13 18:31:38,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565235413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:38,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:38,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:31:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848641006] [2022-12-13 18:31:38,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:38,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:31:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:31:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:31:38,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 196 [2022-12-13 18:31:38,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 18:31:38,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:38,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 196 [2022-12-13 18:31:38,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:38,668 INFO L130 PetriNetUnfolder]: 272/458 cut-off events. [2022-12-13 18:31:38,668 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 18:31:38,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 458 events. 272/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1998 event pairs, 272 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 910. Up to 433 conditions per place. [2022-12-13 18:31:38,673 INFO L137 encePairwiseOnDemand]: 189/196 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-12-13 18:31:38,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2022-12-13 18:31:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:31:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:31:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2022-12-13 18:31:38,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5433673469387755 [2022-12-13 18:31:38,686 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2022-12-13 18:31:38,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2022-12-13 18:31:38,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:38,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2022-12-13 18:31:38,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 18:31:38,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 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 18:31:38,694 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 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 18:31:38,695 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 213 transitions. [2022-12-13 18:31:38,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2022-12-13 18:31:38,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:31:38,698 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2022-12-13 18:31:38,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2022-12-13 18:31:38,702 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2022-12-13 18:31:38,702 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2022-12-13 18:31:38,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 18:31:38,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:38,703 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:38,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:31:38,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1322410578, now seen corresponding path program 1 times [2022-12-13 18:31:38,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:38,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47334098] [2022-12-13 18:31:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:38,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:39,131 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 18:31:39,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:39,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47334098] [2022-12-13 18:31:39,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47334098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:39,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:39,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:39,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472799543] [2022-12-13 18:31:39,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:39,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:39,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:39,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:39,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 196 [2022-12-13 18:31:39,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:39,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:39,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 196 [2022-12-13 18:31:39,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:39,331 INFO L130 PetriNetUnfolder]: 218/373 cut-off events. [2022-12-13 18:31:39,331 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:31:39,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 373 events. 218/373 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1576 event pairs, 54 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 750. Up to 327 conditions per place. [2022-12-13 18:31:39,333 INFO L137 encePairwiseOnDemand]: 192/196 looper letters, 18 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2022-12-13 18:31:39,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 96 flow [2022-12-13 18:31:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:31:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:31:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 422 transitions. [2022-12-13 18:31:39,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4306122448979592 [2022-12-13 18:31:39,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 422 transitions. [2022-12-13 18:31:39,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 422 transitions. [2022-12-13 18:31:39,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:39,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 422 transitions. [2022-12-13 18:31:39,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 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 18:31:39,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 18:31:39,349 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 18:31:39,349 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 5 states and 422 transitions. [2022-12-13 18:31:39,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 96 flow [2022-12-13 18:31:39,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:31:39,350 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 48 flow [2022-12-13 18:31:39,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2022-12-13 18:31:39,351 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2022-12-13 18:31:39,351 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 48 flow [2022-12-13 18:31:39,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:39,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:39,352 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:31:39,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:39,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1322410538, now seen corresponding path program 1 times [2022-12-13 18:31:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:39,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767579199] [2022-12-13 18:31:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:39,433 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 18:31:39,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:39,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767579199] [2022-12-13 18:31:39,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767579199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:39,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:39,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:31:39,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867645941] [2022-12-13 18:31:39,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:39,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:31:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:31:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:31:39,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 196 [2022-12-13 18:31:39,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 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 18:31:39,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:39,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 196 [2022-12-13 18:31:39,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:39,522 INFO L130 PetriNetUnfolder]: 212/388 cut-off events. [2022-12-13 18:31:39,522 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 18:31:39,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 388 events. 212/388 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1772 event pairs, 62 based on Foata normal form. 27/411 useless extension candidates. Maximal degree in co-relation 781. Up to 205 conditions per place. [2022-12-13 18:31:39,526 INFO L137 encePairwiseOnDemand]: 192/196 looper letters, 18 selfloop transitions, 2 changer transitions 11/34 dead transitions. [2022-12-13 18:31:39,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 142 flow [2022-12-13 18:31:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:31:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:31:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2022-12-13 18:31:39,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.503061224489796 [2022-12-13 18:31:39,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2022-12-13 18:31:39,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2022-12-13 18:31:39,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:39,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2022-12-13 18:31:39,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 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 18:31:39,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 18:31:39,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 18:31:39,537 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 48 flow. Second operand 5 states and 493 transitions. [2022-12-13 18:31:39,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 142 flow [2022-12-13 18:31:39,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 137 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:31:39,539 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 55 flow [2022-12-13 18:31:39,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=55, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2022-12-13 18:31:39,540 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2022-12-13 18:31:39,540 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 55 flow [2022-12-13 18:31:39,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 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 18:31:39,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:39,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:39,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:31:39,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:39,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1954988283, now seen corresponding path program 1 times [2022-12-13 18:31:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:39,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491699092] [2022-12-13 18:31:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:39,656 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 18:31:39,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491699092] [2022-12-13 18:31:39,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491699092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:39,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:39,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065007659] [2022-12-13 18:31:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:39,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 196 [2022-12-13 18:31:39,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 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 18:31:39,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:39,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 196 [2022-12-13 18:31:39,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:39,853 INFO L130 PetriNetUnfolder]: 719/1151 cut-off events. [2022-12-13 18:31:39,854 INFO L131 PetriNetUnfolder]: For 349/349 co-relation queries the response was YES. [2022-12-13 18:31:39,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 1151 events. 719/1151 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5129 event pairs, 69 based on Foata normal form. 71/1222 useless extension candidates. Maximal degree in co-relation 2654. Up to 442 conditions per place. [2022-12-13 18:31:39,860 INFO L137 encePairwiseOnDemand]: 187/196 looper letters, 32 selfloop transitions, 7 changer transitions 22/61 dead transitions. [2022-12-13 18:31:39,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 283 flow [2022-12-13 18:31:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:31:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2022-12-13 18:31:39,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4752186588921283 [2022-12-13 18:31:39,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2022-12-13 18:31:39,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2022-12-13 18:31:39,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:39,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2022-12-13 18:31:39,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 18:31:39,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 18:31:39,868 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 18:31:39,868 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 55 flow. Second operand 7 states and 652 transitions. [2022-12-13 18:31:39,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 283 flow [2022-12-13 18:31:39,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 61 transitions, 267 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 18:31:39,874 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 114 flow [2022-12-13 18:31:39,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2022-12-13 18:31:39,875 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2022-12-13 18:31:39,875 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 114 flow [2022-12-13 18:31:39,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 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 18:31:39,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:39,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:39,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:31:39,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:39,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:39,877 INFO L85 PathProgramCache]: Analyzing trace with hash -475345167, now seen corresponding path program 1 times [2022-12-13 18:31:39,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:39,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780794115] [2022-12-13 18:31:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:39,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:39,979 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 18:31:39,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:39,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780794115] [2022-12-13 18:31:39,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780794115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:39,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:39,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:31:39,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327044586] [2022-12-13 18:31:39,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:39,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:39,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:39,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:40,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 196 [2022-12-13 18:31:40,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 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 18:31:40,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:40,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 196 [2022-12-13 18:31:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:40,177 INFO L130 PetriNetUnfolder]: 613/1010 cut-off events. [2022-12-13 18:31:40,177 INFO L131 PetriNetUnfolder]: For 1242/1242 co-relation queries the response was YES. [2022-12-13 18:31:40,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 1010 events. 613/1010 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4592 event pairs, 114 based on Foata normal form. 60/1070 useless extension candidates. Maximal degree in co-relation 3213. Up to 388 conditions per place. [2022-12-13 18:31:40,185 INFO L137 encePairwiseOnDemand]: 187/196 looper letters, 37 selfloop transitions, 13 changer transitions 23/73 dead transitions. [2022-12-13 18:31:40,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 73 transitions, 487 flow [2022-12-13 18:31:40,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:31:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 651 transitions. [2022-12-13 18:31:40,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2022-12-13 18:31:40,187 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 651 transitions. [2022-12-13 18:31:40,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 651 transitions. [2022-12-13 18:31:40,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:40,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 651 transitions. [2022-12-13 18:31:40,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 0 states have call successors, (0), 0 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 18:31:40,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 18:31:40,195 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 18:31:40,195 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 114 flow. Second operand 7 states and 651 transitions. [2022-12-13 18:31:40,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 73 transitions, 487 flow [2022-12-13 18:31:40,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 73 transitions, 480 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 18:31:40,200 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 245 flow [2022-12-13 18:31:40,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2022-12-13 18:31:40,202 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2022-12-13 18:31:40,202 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 245 flow [2022-12-13 18:31:40,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 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 18:31:40,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:40,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:40,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:31:40,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:40,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:40,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1852419213, now seen corresponding path program 1 times [2022-12-13 18:31:40,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:40,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300336896] [2022-12-13 18:31:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:40,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:40,290 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 18:31:40,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:40,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300336896] [2022-12-13 18:31:40,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300336896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:40,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:40,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:40,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113893166] [2022-12-13 18:31:40,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:40,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:40,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:40,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 196 [2022-12-13 18:31:40,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 245 flow. Second operand has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 18:31:40,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:40,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 196 [2022-12-13 18:31:40,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:40,464 INFO L130 PetriNetUnfolder]: 552/905 cut-off events. [2022-12-13 18:31:40,465 INFO L131 PetriNetUnfolder]: For 2499/2499 co-relation queries the response was YES. [2022-12-13 18:31:40,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3619 conditions, 905 events. 552/905 cut-off events. For 2499/2499 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3868 event pairs, 76 based on Foata normal form. 28/933 useless extension candidates. Maximal degree in co-relation 3604. Up to 428 conditions per place. [2022-12-13 18:31:40,474 INFO L137 encePairwiseOnDemand]: 187/196 looper letters, 39 selfloop transitions, 22 changer transitions 14/75 dead transitions. [2022-12-13 18:31:40,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 660 flow [2022-12-13 18:31:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:31:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 649 transitions. [2022-12-13 18:31:40,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47303206997084546 [2022-12-13 18:31:40,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 649 transitions. [2022-12-13 18:31:40,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 649 transitions. [2022-12-13 18:31:40,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:40,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 649 transitions. [2022-12-13 18:31:40,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.71428571428571) internal successors, (649), 7 states have internal predecessors, (649), 0 states have call successors, (0), 0 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 18:31:40,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 18:31:40,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 18:31:40,485 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 245 flow. Second operand 7 states and 649 transitions. [2022-12-13 18:31:40,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 660 flow [2022-12-13 18:31:40,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 640 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 18:31:40,494 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 446 flow [2022-12-13 18:31:40,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2022-12-13 18:31:40,495 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2022-12-13 18:31:40,496 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 446 flow [2022-12-13 18:31:40,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 18:31:40,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:40,496 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:40,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:31:40,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:40,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1664076317, now seen corresponding path program 1 times [2022-12-13 18:31:40,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:40,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380433970] [2022-12-13 18:31:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:40,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:40,620 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 18:31:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:40,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380433970] [2022-12-13 18:31:40,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380433970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:40,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:40,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:40,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217391597] [2022-12-13 18:31:40,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:40,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:31:40,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:40,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:31:40,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:31:40,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 196 [2022-12-13 18:31:40,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 18:31:40,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:40,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 196 [2022-12-13 18:31:40,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:40,732 INFO L130 PetriNetUnfolder]: 365/674 cut-off events. [2022-12-13 18:31:40,733 INFO L131 PetriNetUnfolder]: For 3150/3212 co-relation queries the response was YES. [2022-12-13 18:31:40,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 674 events. 365/674 cut-off events. For 3150/3212 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3418 event pairs, 45 based on Foata normal form. 70/728 useless extension candidates. Maximal degree in co-relation 2886. Up to 240 conditions per place. [2022-12-13 18:31:40,736 INFO L137 encePairwiseOnDemand]: 190/196 looper letters, 56 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2022-12-13 18:31:40,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 863 flow [2022-12-13 18:31:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:31:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:31:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2022-12-13 18:31:40,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2022-12-13 18:31:40,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2022-12-13 18:31:40,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2022-12-13 18:31:40,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:40,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2022-12-13 18:31:40,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 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 18:31:40,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:40,741 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 196.0) internal successors, (980), 5 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:40,741 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 446 flow. Second operand 4 states and 390 transitions. [2022-12-13 18:31:40,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 863 flow [2022-12-13 18:31:40,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 833 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-12-13 18:31:40,746 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 462 flow [2022-12-13 18:31:40,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2022-12-13 18:31:40,747 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2022-12-13 18:31:40,747 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 462 flow [2022-12-13 18:31:40,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 18:31:40,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:40,748 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:40,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:31:40,748 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash -870989808, now seen corresponding path program 1 times [2022-12-13 18:31:40,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:40,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85725004] [2022-12-13 18:31:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:40,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:40,832 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 18:31:40,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85725004] [2022-12-13 18:31:40,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85725004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:40,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:40,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:31:40,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596747374] [2022-12-13 18:31:40,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:40,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:40,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:40,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:40,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 196 [2022-12-13 18:31:40,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:40,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:40,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 196 [2022-12-13 18:31:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:40,961 INFO L130 PetriNetUnfolder]: 315/607 cut-off events. [2022-12-13 18:31:40,961 INFO L131 PetriNetUnfolder]: For 2978/3097 co-relation queries the response was YES. [2022-12-13 18:31:40,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 607 events. 315/607 cut-off events. For 2978/3097 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3146 event pairs, 39 based on Foata normal form. 102/691 useless extension candidates. Maximal degree in co-relation 2947. Up to 224 conditions per place. [2022-12-13 18:31:40,966 INFO L137 encePairwiseOnDemand]: 190/196 looper letters, 58 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2022-12-13 18:31:40,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 881 flow [2022-12-13 18:31:40,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:31:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:31:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 488 transitions. [2022-12-13 18:31:40,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2022-12-13 18:31:40,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 488 transitions. [2022-12-13 18:31:40,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 488 transitions. [2022-12-13 18:31:40,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:40,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 488 transitions. [2022-12-13 18:31:40,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 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 18:31:40,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 18:31:40,972 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 18:31:40,972 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 462 flow. Second operand 5 states and 488 transitions. [2022-12-13 18:31:40,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 881 flow [2022-12-13 18:31:40,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 876 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 18:31:40,978 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 512 flow [2022-12-13 18:31:40,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2022-12-13 18:31:40,979 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2022-12-13 18:31:40,979 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 512 flow [2022-12-13 18:31:40,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:40,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:40,979 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:40,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:31:40,979 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:40,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:40,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1785160525, now seen corresponding path program 1 times [2022-12-13 18:31:40,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:40,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972821217] [2022-12-13 18:31:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:40,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:41,077 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 18:31:41,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:41,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972821217] [2022-12-13 18:31:41,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972821217] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:41,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:41,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:31:41,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689534005] [2022-12-13 18:31:41,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:41,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:41,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:41,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:41,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:41,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 196 [2022-12-13 18:31:41,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 512 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 18:31:41,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:41,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 196 [2022-12-13 18:31:41,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:41,285 INFO L130 PetriNetUnfolder]: 538/991 cut-off events. [2022-12-13 18:31:41,285 INFO L131 PetriNetUnfolder]: For 5477/5477 co-relation queries the response was YES. [2022-12-13 18:31:41,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 991 events. 538/991 cut-off events. For 5477/5477 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5036 event pairs, 95 based on Foata normal form. 11/1002 useless extension candidates. Maximal degree in co-relation 5524. Up to 362 conditions per place. [2022-12-13 18:31:41,291 INFO L137 encePairwiseOnDemand]: 187/196 looper letters, 44 selfloop transitions, 24 changer transitions 25/93 dead transitions. [2022-12-13 18:31:41,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 1016 flow [2022-12-13 18:31:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:31:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 641 transitions. [2022-12-13 18:31:41,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.467201166180758 [2022-12-13 18:31:41,293 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 641 transitions. [2022-12-13 18:31:41,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 641 transitions. [2022-12-13 18:31:41,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:41,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 641 transitions. [2022-12-13 18:31:41,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.57142857142857) internal successors, (641), 7 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 18:31:41,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 18:31:41,298 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 18:31:41,298 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 512 flow. Second operand 7 states and 641 transitions. [2022-12-13 18:31:41,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 1016 flow [2022-12-13 18:31:41,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 974 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-12-13 18:31:41,309 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 546 flow [2022-12-13 18:31:41,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2022-12-13 18:31:41,309 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2022-12-13 18:31:41,310 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 546 flow [2022-12-13 18:31:41,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 18:31:41,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:41,310 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:41,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:31:41,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash -219158105, now seen corresponding path program 1 times [2022-12-13 18:31:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:41,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665194003] [2022-12-13 18:31:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:41,424 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 18:31:41,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:41,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665194003] [2022-12-13 18:31:41,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665194003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:41,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:41,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:31:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860497429] [2022-12-13 18:31:41,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:41,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:31:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:31:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:31:41,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 196 [2022-12-13 18:31:41,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 18:31:41,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:41,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 196 [2022-12-13 18:31:41,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:41,532 INFO L130 PetriNetUnfolder]: 137/295 cut-off events. [2022-12-13 18:31:41,532 INFO L131 PetriNetUnfolder]: For 2002/2074 co-relation queries the response was YES. [2022-12-13 18:31:41,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 295 events. 137/295 cut-off events. For 2002/2074 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1289 event pairs, 14 based on Foata normal form. 61/349 useless extension candidates. Maximal degree in co-relation 1658. Up to 87 conditions per place. [2022-12-13 18:31:41,534 INFO L137 encePairwiseOnDemand]: 190/196 looper letters, 19 selfloop transitions, 11 changer transitions 32/70 dead transitions. [2022-12-13 18:31:41,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 903 flow [2022-12-13 18:31:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:31:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:31:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 570 transitions. [2022-12-13 18:31:41,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2022-12-13 18:31:41,536 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 570 transitions. [2022-12-13 18:31:41,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 570 transitions. [2022-12-13 18:31:41,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:41,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 570 transitions. [2022-12-13 18:31:41,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 18:31:41,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 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 18:31:41,541 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 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 18:31:41,541 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 546 flow. Second operand 6 states and 570 transitions. [2022-12-13 18:31:41,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 903 flow [2022-12-13 18:31:41,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 858 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-12-13 18:31:41,549 INFO L231 Difference]: Finished difference. Result has 62 places, 33 transitions, 350 flow [2022-12-13 18:31:41,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=62, PETRI_TRANSITIONS=33} [2022-12-13 18:31:41,549 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2022-12-13 18:31:41,549 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 33 transitions, 350 flow [2022-12-13 18:31:41,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 18:31:41,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:41,550 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 18:31:41,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:31:41,550 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1830107328, now seen corresponding path program 1 times [2022-12-13 18:31:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:41,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622371861] [2022-12-13 18:31:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:41,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:41,637 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 18:31:41,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:41,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622371861] [2022-12-13 18:31:41,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622371861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:41,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:41,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619995063] [2022-12-13 18:31:41,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:41,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:41,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:41,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 196 [2022-12-13 18:31:41,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 33 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 18:31:41,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:41,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 196 [2022-12-13 18:31:41,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:41,705 INFO L130 PetriNetUnfolder]: 40/111 cut-off events. [2022-12-13 18:31:41,705 INFO L131 PetriNetUnfolder]: For 552/552 co-relation queries the response was YES. [2022-12-13 18:31:41,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 111 events. 40/111 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 342 event pairs, 5 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 678. Up to 58 conditions per place. [2022-12-13 18:31:41,706 INFO L137 encePairwiseOnDemand]: 191/196 looper letters, 21 selfloop transitions, 3 changer transitions 26/52 dead transitions. [2022-12-13 18:31:41,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 52 transitions, 618 flow [2022-12-13 18:31:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:31:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:31:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2022-12-13 18:31:41,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2022-12-13 18:31:41,708 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2022-12-13 18:31:41,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2022-12-13 18:31:41,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:41,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2022-12-13 18:31:41,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 18:31:41,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 18:31:41,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 18:31:41,712 INFO L175 Difference]: Start difference. First operand has 62 places, 33 transitions, 350 flow. Second operand 5 states and 475 transitions. [2022-12-13 18:31:41,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 52 transitions, 618 flow [2022-12-13 18:31:41,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 386 flow, removed 37 selfloop flow, removed 20 redundant places. [2022-12-13 18:31:41,716 INFO L231 Difference]: Finished difference. Result has 48 places, 24 transitions, 139 flow [2022-12-13 18:31:41,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=48, PETRI_TRANSITIONS=24} [2022-12-13 18:31:41,716 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2022-12-13 18:31:41,716 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 24 transitions, 139 flow [2022-12-13 18:31:41,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 18:31:41,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:41,717 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 18:31:41,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:31:41,717 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:31:41,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:41,718 INFO L85 PathProgramCache]: Analyzing trace with hash -20339696, now seen corresponding path program 2 times [2022-12-13 18:31:41,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:41,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772128350] [2022-12-13 18:31:41,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:41,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:41,812 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 18:31:41,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:41,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772128350] [2022-12-13 18:31:41,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772128350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:41,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:41,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:31:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049554213] [2022-12-13 18:31:41,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:41,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:41,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:41,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:41,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:41,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 196 [2022-12-13 18:31:41,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 24 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 18:31:41,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:41,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 196 [2022-12-13 18:31:41,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:41,869 INFO L130 PetriNetUnfolder]: 12/40 cut-off events. [2022-12-13 18:31:41,869 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2022-12-13 18:31:41,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 40 events. 12/40 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 162. Up to 17 conditions per place. [2022-12-13 18:31:41,870 INFO L137 encePairwiseOnDemand]: 191/196 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2022-12-13 18:31:41,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 29 transitions, 211 flow [2022-12-13 18:31:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:31:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:31:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 554 transitions. [2022-12-13 18:31:41,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4710884353741497 [2022-12-13 18:31:41,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 554 transitions. [2022-12-13 18:31:41,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 554 transitions. [2022-12-13 18:31:41,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:41,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 554 transitions. [2022-12-13 18:31:41,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 18:31:41,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 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 18:31:41,875 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 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 18:31:41,876 INFO L175 Difference]: Start difference. First operand has 48 places, 24 transitions, 139 flow. Second operand 6 states and 554 transitions. [2022-12-13 18:31:41,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 29 transitions, 211 flow [2022-12-13 18:31:41,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 155 flow, removed 4 selfloop flow, removed 13 redundant places. [2022-12-13 18:31:41,877 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2022-12-13 18:31:41,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2022-12-13 18:31:41,877 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2022-12-13 18:31:41,877 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2022-12-13 18:31:41,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 18:31:41,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2022-12-13 18:31:41,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2022-12-13 18:31:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:31:41,882 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:41,886 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:31:41,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:31:41,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:31:41 BasicIcfg [2022-12-13 18:31:41,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:31:41,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:31:41,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:31:41,890 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:31:41,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:31:36" (3/4) ... [2022-12-13 18:31:41,893 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:31:41,899 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 18:31:41,900 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 18:31:41,900 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 18:31:41,904 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 18:31:41,904 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 18:31:41,904 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 18:31:41,904 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:31:41,934 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:31:41,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:31:41,934 INFO L158 Benchmark]: Toolchain (without parser) took 6469.56ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 106.1MB in the beginning and 39.8MB in the end (delta: 66.3MB). Peak memory consumption was 98.2MB. Max. memory is 16.1GB. [2022-12-13 18:31:41,935 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory was 113.5MB in the beginning and 113.5MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:31:41,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.28ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 82.5MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 18:31:41,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.66ms. Allocated memory is still 138.4MB. Free memory was 82.5MB in the beginning and 80.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:31:41,936 INFO L158 Benchmark]: Boogie Preprocessor took 16.13ms. Allocated memory is still 138.4MB. Free memory was 80.5MB in the beginning and 79.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:31:41,936 INFO L158 Benchmark]: RCFGBuilder took 323.13ms. Allocated memory is still 138.4MB. Free memory was 79.0MB in the beginning and 64.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 18:31:41,936 INFO L158 Benchmark]: TraceAbstraction took 5738.02ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 63.7MB in the beginning and 41.9MB in the end (delta: 21.8MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2022-12-13 18:31:41,936 INFO L158 Benchmark]: Witness Printer took 44.13ms. Allocated memory is still 167.8MB. Free memory was 41.9MB in the beginning and 39.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:31:41,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory was 113.5MB in the beginning and 113.5MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.28ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 82.5MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.66ms. Allocated memory is still 138.4MB. Free memory was 82.5MB in the beginning and 80.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.13ms. Allocated memory is still 138.4MB. Free memory was 80.5MB in the beginning and 79.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.13ms. Allocated memory is still 138.4MB. Free memory was 79.0MB in the beginning and 64.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5738.02ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 63.7MB in the beginning and 41.9MB in the end (delta: 21.8MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Witness Printer took 44.13ms. Allocated memory is still 167.8MB. Free memory was 41.9MB in the beginning and 39.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 101 PlacesBefore, 35 PlacesAfterwards, 93 TransitionsBefore, 26 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 95 TotalNumberOfCompositions, 3092 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1572, independent: 1482, independent conditional: 0, independent unconditional: 1482, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 891, independent: 873, independent conditional: 0, independent unconditional: 873, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1572, independent: 609, independent conditional: 0, independent unconditional: 609, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 891, unknown conditional: 0, unknown unconditional: 891] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 124 locations, 11 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: 5.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 634 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 433 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1110 IncrementalHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 153 mSDtfsCounter, 1110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=546occurred in iteration=9, InterpolantAutomatonStates: 66, 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, 1.2s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:31:41,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_305296f9-b4ea-4cf5-a119-310b25514d72/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