./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS --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 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 --- 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-4e7fbc6 [2022-11-23 02:47:59,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:47:59,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:47:59,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:47:59,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:47:59,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:47:59,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:47:59,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:47:59,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:47:59,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:47:59,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:47:59,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:47:59,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:47:59,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:47:59,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:47:59,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:47:59,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:47:59,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:47:59,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:47:59,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:47:59,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:47:59,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:47:59,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:47:59,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:47:59,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:47:59,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:47:59,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:47:59,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:47:59,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:47:59,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:47:59,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:47:59,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:47:59,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:47:59,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:47:59,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:47:59,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:47:59,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:47:59,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:47:59,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:47:59,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:47:59,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:47:59,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 02:47:59,454 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:47:59,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:47:59,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:47:59,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:47:59,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:47:59,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:47:59,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:47:59,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:47:59,457 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:47:59,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:47:59,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:47:59,458 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:47:59,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:47:59,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:47:59,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:47:59,459 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 02:47:59,459 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 02:47:59,459 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 02:47:59,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:47:59,460 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:47:59,460 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:47:59,460 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:47:59,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:47:59,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:47:59,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:47:59,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:47:59,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:47:59,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:47:59,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:47:59,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:47:59,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:47:59,462 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:47:59,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:47:59,463 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_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 [2022-11-23 02:47:59,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:47:59,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:47:59,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:47:59,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:47:59,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:47:59,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2022-11-23 02:48:02,919 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:48:03,265 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:48:03,266 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2022-11-23 02:48:03,280 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/data/2a715eed3/e9aa4c5fc5e448c4a9cc831159bcfa88/FLAGb1fbaf2eb [2022-11-23 02:48:03,294 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/data/2a715eed3/e9aa4c5fc5e448c4a9cc831159bcfa88 [2022-11-23 02:48:03,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:48:03,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:48:03,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:48:03,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:48:03,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:48:03,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48311e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03, skipping insertion in model container [2022-11-23 02:48:03,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:48:03,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:48:03,538 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_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2022-11-23 02:48:03,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:48:03,784 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:48:03,797 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_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i[966,979] [2022-11-23 02:48:03,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:48:03,882 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:48:03,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03 WrapperNode [2022-11-23 02:48:03,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:48:03,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:48:03,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:48:03,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:48:03,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,937 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-11-23 02:48:03,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:48:03,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:48:03,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:48:03,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:48:03,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,989 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:03,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:48:04,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:48:04,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:48:04,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:48:04,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (1/1) ... [2022-11-23 02:48:04,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:48:04,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:48:04,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:48:04,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3fe3ed7-2000-4e3f-983e-f65dcc8379d6/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:48:04,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:48:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:48:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:48:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:48:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:48:04,106 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-23 02:48:04,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-23 02:48:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-23 02:48:04,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-23 02:48:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-23 02:48:04,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-23 02:48:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-23 02:48:04,108 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-23 02:48:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:48:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:48:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:48:04,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:48:04,110 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:48:04,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:48:04,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:48:04,648 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:48:04,833 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:48:04,833 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:48:04,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:48:04 BoogieIcfgContainer [2022-11-23 02:48:04,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:48:04,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:48:04,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:48:04,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:48:04,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:48:03" (1/3) ... [2022-11-23 02:48:04,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc610aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:48:04, skipping insertion in model container [2022-11-23 02:48:04,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:03" (2/3) ... [2022-11-23 02:48:04,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc610aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:48:04, skipping insertion in model container [2022-11-23 02:48:04,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:48:04" (3/3) ... [2022-11-23 02:48:04,850 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.opt_pso.opt_rmo.opt.i [2022-11-23 02:48:04,868 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:48:04,868 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-23 02:48:04,869 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:48:04,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 02:48:05,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 147 transitions, 314 flow [2022-11-23 02:48:05,131 INFO L130 PetriNetUnfolder]: 2/143 cut-off events. [2022-11-23 02:48:05,131 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:48:05,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 143 events. 2/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-11-23 02:48:05,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 147 transitions, 314 flow [2022-11-23 02:48:05,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 143 transitions, 298 flow [2022-11-23 02:48:05,157 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:48:05,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 143 transitions, 298 flow [2022-11-23 02:48:05,180 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 143 transitions, 298 flow [2022-11-23 02:48:05,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 143 transitions, 298 flow [2022-11-23 02:48:05,221 INFO L130 PetriNetUnfolder]: 2/143 cut-off events. [2022-11-23 02:48:05,221 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:48:05,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 143 events. 2/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-11-23 02:48:05,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 3552 [2022-11-23 02:48:12,801 INFO L134 LiptonReduction]: Checked pairs total: 9955 [2022-11-23 02:48:12,801 INFO L136 LiptonReduction]: Total number of compositions: 138 [2022-11-23 02:48:12,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:48:12,825 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;@568cde0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:48:12,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-23 02:48:12,827 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-23 02:48:12,827 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:48:12,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:12,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 02:48:12,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:12,837 INFO L85 PathProgramCache]: Analyzing trace with hash 607, now seen corresponding path program 1 times [2022-11-23 02:48:12,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:12,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574173007] [2022-11-23 02:48:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:12,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:12,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:12,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574173007] [2022-11-23 02:48:12,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574173007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:12,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:12,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 02:48:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406464966] [2022-11-23 02:48:12,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:12,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:48:12,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:13,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:48:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:48:13,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 285 [2022-11-23 02:48:13,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:13,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:13,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 285 [2022-11-23 02:48:13,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:14,426 INFO L130 PetriNetUnfolder]: 5049/7088 cut-off events. [2022-11-23 02:48:14,427 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-11-23 02:48:14,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14126 conditions, 7088 events. 5049/7088 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 37827 event pairs, 5049 based on Foata normal form. 0/6055 useless extension candidates. Maximal degree in co-relation 14114. Up to 6881 conditions per place. [2022-11-23 02:48:14,486 INFO L137 encePairwiseOnDemand]: 276/285 looper letters, 26 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2022-11-23 02:48:14,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 126 flow [2022-11-23 02:48:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:48:14,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 02:48:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 301 transitions. [2022-11-23 02:48:14,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5280701754385965 [2022-11-23 02:48:14,513 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 301 transitions. [2022-11-23 02:48:14,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 301 transitions. [2022-11-23 02:48:14,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:14,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 301 transitions. [2022-11-23 02:48:14,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:14,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:14,529 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:14,531 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 92 flow. Second operand 2 states and 301 transitions. [2022-11-23 02:48:14,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 126 flow [2022-11-23 02:48:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-23 02:48:14,540 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 70 flow [2022-11-23 02:48:14,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2022-11-23 02:48:14,546 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -11 predicate places. [2022-11-23 02:48:14,546 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 70 flow [2022-11-23 02:48:14,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:14,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:14,547 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:14,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:48:14,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1501050167, now seen corresponding path program 1 times [2022-11-23 02:48:14,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:14,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721899368] [2022-11-23 02:48:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:14,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:15,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:15,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721899368] [2022-11-23 02:48:15,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721899368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:15,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:15,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:48:15,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861712003] [2022-11-23 02:48:15,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:15,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:48:15,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:15,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:48:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:48:15,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 285 [2022-11-23 02:48:15,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:15,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:15,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 285 [2022-11-23 02:48:15,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:16,161 INFO L130 PetriNetUnfolder]: 3975/5693 cut-off events. [2022-11-23 02:48:16,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:48:16,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 5693 events. 3975/5693 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 30725 event pairs, 1089 based on Foata normal form. 0/5257 useless extension candidates. Maximal degree in co-relation 11267. Up to 4303 conditions per place. [2022-11-23 02:48:16,210 INFO L137 encePairwiseOnDemand]: 282/285 looper letters, 37 selfloop transitions, 2 changer transitions 2/46 dead transitions. [2022-11-23 02:48:16,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 184 flow [2022-11-23 02:48:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:48:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:48:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2022-11-23 02:48:16,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2022-11-23 02:48:16,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2022-11-23 02:48:16,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2022-11-23 02:48:16,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:16,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2022-11-23 02:48:16,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:16,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:16,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:16,227 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 70 flow. Second operand 3 states and 438 transitions. [2022-11-23 02:48:16,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 184 flow [2022-11-23 02:48:16,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:48:16,230 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 70 flow [2022-11-23 02:48:16,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2022-11-23 02:48:16,231 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -10 predicate places. [2022-11-23 02:48:16,231 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 70 flow [2022-11-23 02:48:16,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:16,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:16,233 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:16,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:48:16,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:16,238 INFO L85 PathProgramCache]: Analyzing trace with hash 986344661, now seen corresponding path program 1 times [2022-11-23 02:48:16,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:16,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814235398] [2022-11-23 02:48:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:16,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:17,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:17,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814235398] [2022-11-23 02:48:17,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814235398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:17,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:17,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:48:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312225895] [2022-11-23 02:48:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:48:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:48:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:48:17,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 285 [2022-11-23 02:48:17,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:17,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:17,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 285 [2022-11-23 02:48:17,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:19,832 INFO L130 PetriNetUnfolder]: 12119/16456 cut-off events. [2022-11-23 02:48:19,833 INFO L131 PetriNetUnfolder]: For 820/820 co-relation queries the response was YES. [2022-11-23 02:48:19,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33943 conditions, 16456 events. 12119/16456 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 83675 event pairs, 2743 based on Foata normal form. 0/16132 useless extension candidates. Maximal degree in co-relation 33939. Up to 8913 conditions per place. [2022-11-23 02:48:19,960 INFO L137 encePairwiseOnDemand]: 272/285 looper letters, 47 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2022-11-23 02:48:19,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 254 flow [2022-11-23 02:48:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:48:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:48:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 537 transitions. [2022-11-23 02:48:19,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2022-11-23 02:48:19,963 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 537 transitions. [2022-11-23 02:48:19,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 537 transitions. [2022-11-23 02:48:19,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:19,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 537 transitions. [2022-11-23 02:48:19,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:19,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:19,969 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:19,970 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 4 states and 537 transitions. [2022-11-23 02:48:19,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 254 flow [2022-11-23 02:48:19,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:48:19,979 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 158 flow [2022-11-23 02:48:19,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-11-23 02:48:19,981 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2022-11-23 02:48:19,981 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 158 flow [2022-11-23 02:48:19,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:19,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:19,982 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:19,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:48:19,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash 511914335, now seen corresponding path program 1 times [2022-11-23 02:48:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:19,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342518457] [2022-11-23 02:48:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:20,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342518457] [2022-11-23 02:48:20,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342518457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:20,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:20,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:48:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822018751] [2022-11-23 02:48:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:20,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:48:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:48:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:48:21,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 285 [2022-11-23 02:48:21,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:21,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:21,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 285 [2022-11-23 02:48:21,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:23,635 INFO L130 PetriNetUnfolder]: 7383/10522 cut-off events. [2022-11-23 02:48:23,635 INFO L131 PetriNetUnfolder]: For 6481/6985 co-relation queries the response was YES. [2022-11-23 02:48:23,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29679 conditions, 10522 events. 7383/10522 cut-off events. For 6481/6985 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 59755 event pairs, 1780 based on Foata normal form. 496/10553 useless extension candidates. Maximal degree in co-relation 29673. Up to 6468 conditions per place. [2022-11-23 02:48:23,721 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 39 selfloop transitions, 4 changer transitions 18/69 dead transitions. [2022-11-23 02:48:23,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 382 flow [2022-11-23 02:48:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:48:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:48:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 848 transitions. [2022-11-23 02:48:23,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42506265664160403 [2022-11-23 02:48:23,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 848 transitions. [2022-11-23 02:48:23,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 848 transitions. [2022-11-23 02:48:23,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:23,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 848 transitions. [2022-11-23 02:48:23,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:23,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:23,740 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:23,740 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 158 flow. Second operand 7 states and 848 transitions. [2022-11-23 02:48:23,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 382 flow [2022-11-23 02:48:23,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:48:23,755 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 152 flow [2022-11-23 02:48:23,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2022-11-23 02:48:23,757 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2022-11-23 02:48:23,758 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 152 flow [2022-11-23 02:48:23,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:23,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:23,759 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:23,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:48:23,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:23,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1312447946, now seen corresponding path program 1 times [2022-11-23 02:48:23,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:23,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947518067] [2022-11-23 02:48:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:23,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:24,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:24,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947518067] [2022-11-23 02:48:24,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947518067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:24,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:24,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:48:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797742764] [2022-11-23 02:48:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:24,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:48:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:48:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:48:24,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 285 [2022-11-23 02:48:24,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:24,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:24,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 285 [2022-11-23 02:48:24,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:26,178 INFO L130 PetriNetUnfolder]: 7993/11294 cut-off events. [2022-11-23 02:48:26,178 INFO L131 PetriNetUnfolder]: For 4821/4821 co-relation queries the response was YES. [2022-11-23 02:48:26,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31469 conditions, 11294 events. 7993/11294 cut-off events. For 4821/4821 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 60809 event pairs, 953 based on Foata normal form. 40/11334 useless extension candidates. Maximal degree in co-relation 31462. Up to 7713 conditions per place. [2022-11-23 02:48:26,273 INFO L137 encePairwiseOnDemand]: 272/285 looper letters, 58 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2022-11-23 02:48:26,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 490 flow [2022-11-23 02:48:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:48:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:48:26,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2022-11-23 02:48:26,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47719298245614034 [2022-11-23 02:48:26,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2022-11-23 02:48:26,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2022-11-23 02:48:26,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:26,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2022-11-23 02:48:26,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:26,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:26,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:26,283 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 152 flow. Second operand 4 states and 544 transitions. [2022-11-23 02:48:26,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 490 flow [2022-11-23 02:48:26,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 82 transitions, 475 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-23 02:48:26,288 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 352 flow [2022-11-23 02:48:26,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2022-11-23 02:48:26,290 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2022-11-23 02:48:26,291 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 352 flow [2022-11-23 02:48:26,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:26,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:26,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:26,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:48:26,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2031182584, now seen corresponding path program 1 times [2022-11-23 02:48:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:26,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320198067] [2022-11-23 02:48:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:26,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:27,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:27,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320198067] [2022-11-23 02:48:27,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320198067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:27,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:27,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:48:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169388130] [2022-11-23 02:48:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:48:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:48:27,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:48:27,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 285 [2022-11-23 02:48:27,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:27,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:27,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 285 [2022-11-23 02:48:27,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:29,181 INFO L130 PetriNetUnfolder]: 10401/14234 cut-off events. [2022-11-23 02:48:29,182 INFO L131 PetriNetUnfolder]: For 16752/16752 co-relation queries the response was YES. [2022-11-23 02:48:29,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50568 conditions, 14234 events. 10401/14234 cut-off events. For 16752/16752 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 70826 event pairs, 1167 based on Foata normal form. 40/14274 useless extension candidates. Maximal degree in co-relation 50559. Up to 9869 conditions per place. [2022-11-23 02:48:29,294 INFO L137 encePairwiseOnDemand]: 271/285 looper letters, 68 selfloop transitions, 41 changer transitions 0/109 dead transitions. [2022-11-23 02:48:29,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 109 transitions, 873 flow [2022-11-23 02:48:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:48:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:48:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2022-11-23 02:48:29,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47017543859649125 [2022-11-23 02:48:29,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 536 transitions. [2022-11-23 02:48:29,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 536 transitions. [2022-11-23 02:48:29,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:29,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 536 transitions. [2022-11-23 02:48:29,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:29,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:29,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:29,303 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 352 flow. Second operand 4 states and 536 transitions. [2022-11-23 02:48:29,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 109 transitions, 873 flow [2022-11-23 02:48:29,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 109 transitions, 873 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:48:29,316 INFO L231 Difference]: Finished difference. Result has 55 places, 80 transitions, 756 flow [2022-11-23 02:48:29,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=756, PETRI_PLACES=55, PETRI_TRANSITIONS=80} [2022-11-23 02:48:29,319 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2022-11-23 02:48:29,319 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 80 transitions, 756 flow [2022-11-23 02:48:29,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:29,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:29,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:29,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:48:29,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -205584494, now seen corresponding path program 1 times [2022-11-23 02:48:29,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:29,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746758013] [2022-11-23 02:48:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:29,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:29,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:29,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746758013] [2022-11-23 02:48:29,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746758013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:29,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:29,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:48:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531010696] [2022-11-23 02:48:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:29,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:48:29,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:48:29,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:48:29,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 285 [2022-11-23 02:48:29,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 80 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:29,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:29,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 285 [2022-11-23 02:48:29,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:31,438 INFO L130 PetriNetUnfolder]: 8425/12065 cut-off events. [2022-11-23 02:48:31,438 INFO L131 PetriNetUnfolder]: For 34560/35051 co-relation queries the response was YES. [2022-11-23 02:48:31,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55075 conditions, 12065 events. 8425/12065 cut-off events. For 34560/35051 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 66986 event pairs, 1355 based on Foata normal form. 313/11897 useless extension candidates. Maximal degree in co-relation 55063. Up to 8322 conditions per place. [2022-11-23 02:48:31,565 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 80 selfloop transitions, 19 changer transitions 0/122 dead transitions. [2022-11-23 02:48:31,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 122 transitions, 1268 flow [2022-11-23 02:48:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:48:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:48:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 571 transitions. [2022-11-23 02:48:31,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5008771929824561 [2022-11-23 02:48:31,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 571 transitions. [2022-11-23 02:48:31,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 571 transitions. [2022-11-23 02:48:31,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:31,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 571 transitions. [2022-11-23 02:48:31,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:31,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:31,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:31,575 INFO L175 Difference]: Start difference. First operand has 55 places, 80 transitions, 756 flow. Second operand 4 states and 571 transitions. [2022-11-23 02:48:31,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 122 transitions, 1268 flow [2022-11-23 02:48:31,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 122 transitions, 1268 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:48:31,588 INFO L231 Difference]: Finished difference. Result has 59 places, 88 transitions, 906 flow [2022-11-23 02:48:31,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=906, PETRI_PLACES=59, PETRI_TRANSITIONS=88} [2022-11-23 02:48:31,589 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2022-11-23 02:48:31,589 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 88 transitions, 906 flow [2022-11-23 02:48:31,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:31,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:31,590 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:31,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:48:31,591 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:31,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:31,591 INFO L85 PathProgramCache]: Analyzing trace with hash -644607115, now seen corresponding path program 1 times [2022-11-23 02:48:31,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:31,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498369741] [2022-11-23 02:48:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:31,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:32,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:32,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498369741] [2022-11-23 02:48:32,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498369741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:32,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:32,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:48:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785173349] [2022-11-23 02:48:32,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:32,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:48:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:32,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:48:32,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:48:32,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 285 [2022-11-23 02:48:32,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 88 transitions, 906 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:32,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:32,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 285 [2022-11-23 02:48:32,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:34,105 INFO L130 PetriNetUnfolder]: 8596/12311 cut-off events. [2022-11-23 02:48:34,105 INFO L131 PetriNetUnfolder]: For 44238/45108 co-relation queries the response was YES. [2022-11-23 02:48:34,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59327 conditions, 12311 events. 8596/12311 cut-off events. For 44238/45108 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 68814 event pairs, 1348 based on Foata normal form. 473/12298 useless extension candidates. Maximal degree in co-relation 59313. Up to 8848 conditions per place. [2022-11-23 02:48:34,354 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 90 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2022-11-23 02:48:34,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 127 transitions, 1398 flow [2022-11-23 02:48:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:48:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:48:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2022-11-23 02:48:34,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4964912280701754 [2022-11-23 02:48:34,359 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2022-11-23 02:48:34,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2022-11-23 02:48:34,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:34,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2022-11-23 02:48:34,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:34,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:34,367 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:34,367 INFO L175 Difference]: Start difference. First operand has 59 places, 88 transitions, 906 flow. Second operand 4 states and 566 transitions. [2022-11-23 02:48:34,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 127 transitions, 1398 flow [2022-11-23 02:48:34,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 127 transitions, 1387 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:48:34,391 INFO L231 Difference]: Finished difference. Result has 62 places, 95 transitions, 1025 flow [2022-11-23 02:48:34,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1025, PETRI_PLACES=62, PETRI_TRANSITIONS=95} [2022-11-23 02:48:34,393 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2022-11-23 02:48:34,394 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 95 transitions, 1025 flow [2022-11-23 02:48:34,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:34,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:34,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:34,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:48:34,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash -852149089, now seen corresponding path program 1 times [2022-11-23 02:48:34,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:34,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638212902] [2022-11-23 02:48:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:35,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:35,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638212902] [2022-11-23 02:48:35,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638212902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:35,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:35,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:48:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881170269] [2022-11-23 02:48:35,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:35,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:48:35,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:35,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:48:35,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:48:35,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 285 [2022-11-23 02:48:35,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 95 transitions, 1025 flow. Second operand has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:35,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:35,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 285 [2022-11-23 02:48:35,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:36,569 INFO L130 PetriNetUnfolder]: 8663/12419 cut-off events. [2022-11-23 02:48:36,569 INFO L131 PetriNetUnfolder]: For 54412/55280 co-relation queries the response was YES. [2022-11-23 02:48:36,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62069 conditions, 12419 events. 8663/12419 cut-off events. For 54412/55280 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 69590 event pairs, 1058 based on Foata normal form. 443/12368 useless extension candidates. Maximal degree in co-relation 62054. Up to 8630 conditions per place. [2022-11-23 02:48:36,673 INFO L137 encePairwiseOnDemand]: 280/285 looper letters, 89 selfloop transitions, 19 changer transitions 0/131 dead transitions. [2022-11-23 02:48:36,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 131 transitions, 1497 flow [2022-11-23 02:48:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:48:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:48:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 572 transitions. [2022-11-23 02:48:36,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5017543859649123 [2022-11-23 02:48:36,678 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 572 transitions. [2022-11-23 02:48:36,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 572 transitions. [2022-11-23 02:48:36,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:36,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 572 transitions. [2022-11-23 02:48:36,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:36,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:36,683 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:36,683 INFO L175 Difference]: Start difference. First operand has 62 places, 95 transitions, 1025 flow. Second operand 4 states and 572 transitions. [2022-11-23 02:48:36,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 131 transitions, 1497 flow [2022-11-23 02:48:36,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 131 transitions, 1475 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-23 02:48:36,718 INFO L231 Difference]: Finished difference. Result has 64 places, 99 transitions, 1112 flow [2022-11-23 02:48:36,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1112, PETRI_PLACES=64, PETRI_TRANSITIONS=99} [2022-11-23 02:48:36,720 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2022-11-23 02:48:36,720 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 99 transitions, 1112 flow [2022-11-23 02:48:36,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:36,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:36,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:36,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:48:36,724 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:36,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1490873627, now seen corresponding path program 1 times [2022-11-23 02:48:36,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:36,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184130244] [2022-11-23 02:48:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:37,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:37,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184130244] [2022-11-23 02:48:37,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184130244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:37,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:37,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:48:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54708823] [2022-11-23 02:48:37,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:48:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:37,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:48:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:48:37,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 285 [2022-11-23 02:48:37,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 99 transitions, 1112 flow. Second operand has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:37,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:37,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 285 [2022-11-23 02:48:37,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:38,977 INFO L130 PetriNetUnfolder]: 9308/13230 cut-off events. [2022-11-23 02:48:38,977 INFO L131 PetriNetUnfolder]: For 66630/68000 co-relation queries the response was YES. [2022-11-23 02:48:39,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68718 conditions, 13230 events. 9308/13230 cut-off events. For 66630/68000 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 74131 event pairs, 1447 based on Foata normal form. 562/13255 useless extension candidates. Maximal degree in co-relation 68702. Up to 8974 conditions per place. [2022-11-23 02:48:39,082 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 96 selfloop transitions, 39 changer transitions 0/158 dead transitions. [2022-11-23 02:48:39,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 158 transitions, 1905 flow [2022-11-23 02:48:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:48:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:48:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 707 transitions. [2022-11-23 02:48:39,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.496140350877193 [2022-11-23 02:48:39,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 707 transitions. [2022-11-23 02:48:39,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 707 transitions. [2022-11-23 02:48:39,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:39,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 707 transitions. [2022-11-23 02:48:39,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:39,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:39,092 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:39,093 INFO L175 Difference]: Start difference. First operand has 64 places, 99 transitions, 1112 flow. Second operand 5 states and 707 transitions. [2022-11-23 02:48:39,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 158 transitions, 1905 flow [2022-11-23 02:48:39,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 158 transitions, 1885 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-23 02:48:39,145 INFO L231 Difference]: Finished difference. Result has 69 places, 122 transitions, 1557 flow [2022-11-23 02:48:39,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1557, PETRI_PLACES=69, PETRI_TRANSITIONS=122} [2022-11-23 02:48:39,146 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2022-11-23 02:48:39,147 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 122 transitions, 1557 flow [2022-11-23 02:48:39,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:39,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:39,148 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:39,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:48:39,148 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:39,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1359029387, now seen corresponding path program 2 times [2022-11-23 02:48:39,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:39,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846273597] [2022-11-23 02:48:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:39,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:39,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:39,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846273597] [2022-11-23 02:48:39,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846273597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:39,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:39,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:48:39,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927889102] [2022-11-23 02:48:39,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:39,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:48:39,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:39,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:48:39,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:48:39,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 285 [2022-11-23 02:48:39,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 122 transitions, 1557 flow. Second operand has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:39,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:39,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 285 [2022-11-23 02:48:39,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:41,916 INFO L130 PetriNetUnfolder]: 10780/15000 cut-off events. [2022-11-23 02:48:41,916 INFO L131 PetriNetUnfolder]: For 115778/119464 co-relation queries the response was YES. [2022-11-23 02:48:41,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85565 conditions, 15000 events. 10780/15000 cut-off events. For 115778/119464 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 83799 event pairs, 4016 based on Foata normal form. 1518/15709 useless extension candidates. Maximal degree in co-relation 85547. Up to 11337 conditions per place. [2022-11-23 02:48:42,027 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 92 selfloop transitions, 47 changer transitions 0/162 dead transitions. [2022-11-23 02:48:42,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 162 transitions, 2235 flow [2022-11-23 02:48:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:48:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:48:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 696 transitions. [2022-11-23 02:48:42,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4884210526315789 [2022-11-23 02:48:42,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 696 transitions. [2022-11-23 02:48:42,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 696 transitions. [2022-11-23 02:48:42,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:42,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 696 transitions. [2022-11-23 02:48:42,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:42,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:42,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:42,037 INFO L175 Difference]: Start difference. First operand has 69 places, 122 transitions, 1557 flow. Second operand 5 states and 696 transitions. [2022-11-23 02:48:42,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 162 transitions, 2235 flow [2022-11-23 02:48:42,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 162 transitions, 2188 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-11-23 02:48:42,160 INFO L231 Difference]: Finished difference. Result has 74 places, 142 transitions, 2002 flow [2022-11-23 02:48:42,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2002, PETRI_PLACES=74, PETRI_TRANSITIONS=142} [2022-11-23 02:48:42,161 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2022-11-23 02:48:42,161 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 142 transitions, 2002 flow [2022-11-23 02:48:42,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:42,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:42,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:42,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:48:42,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash 281152591, now seen corresponding path program 3 times [2022-11-23 02:48:42,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:42,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393538559] [2022-11-23 02:48:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:42,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:42,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393538559] [2022-11-23 02:48:42,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393538559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:42,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:42,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:48:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045099652] [2022-11-23 02:48:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:42,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:48:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:48:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:48:42,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 285 [2022-11-23 02:48:42,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 142 transitions, 2002 flow. Second operand has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:42,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:42,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 285 [2022-11-23 02:48:42,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:44,815 INFO L130 PetriNetUnfolder]: 10798/15091 cut-off events. [2022-11-23 02:48:44,815 INFO L131 PetriNetUnfolder]: For 147444/152645 co-relation queries the response was YES. [2022-11-23 02:48:44,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92052 conditions, 15091 events. 10798/15091 cut-off events. For 147444/152645 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 85283 event pairs, 3993 based on Foata normal form. 2288/16568 useless extension candidates. Maximal degree in co-relation 92032. Up to 10968 conditions per place. [2022-11-23 02:48:44,944 INFO L137 encePairwiseOnDemand]: 279/285 looper letters, 90 selfloop transitions, 48 changer transitions 0/161 dead transitions. [2022-11-23 02:48:44,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 161 transitions, 2446 flow [2022-11-23 02:48:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:48:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:48:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 555 transitions. [2022-11-23 02:48:44,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2022-11-23 02:48:44,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 555 transitions. [2022-11-23 02:48:44,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 555 transitions. [2022-11-23 02:48:44,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:44,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 555 transitions. [2022-11-23 02:48:44,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:44,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:44,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:44,952 INFO L175 Difference]: Start difference. First operand has 74 places, 142 transitions, 2002 flow. Second operand 4 states and 555 transitions. [2022-11-23 02:48:44,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 161 transitions, 2446 flow [2022-11-23 02:48:45,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 161 transitions, 2389 flow, removed 28 selfloop flow, removed 1 redundant places. [2022-11-23 02:48:45,275 INFO L231 Difference]: Finished difference. Result has 77 places, 149 transitions, 2227 flow [2022-11-23 02:48:45,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2227, PETRI_PLACES=77, PETRI_TRANSITIONS=149} [2022-11-23 02:48:45,276 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2022-11-23 02:48:45,277 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 149 transitions, 2227 flow [2022-11-23 02:48:45,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:45,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:45,277 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:45,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:48:45,278 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2049130426, now seen corresponding path program 1 times [2022-11-23 02:48:45,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796620137] [2022-11-23 02:48:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:45,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:45,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796620137] [2022-11-23 02:48:45,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796620137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:45,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:45,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:48:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039045379] [2022-11-23 02:48:45,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:48:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:48:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:48:46,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 285 [2022-11-23 02:48:46,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 149 transitions, 2227 flow. Second operand has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:46,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:46,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 285 [2022-11-23 02:48:46,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:48,774 INFO L130 PetriNetUnfolder]: 11386/16203 cut-off events. [2022-11-23 02:48:48,775 INFO L131 PetriNetUnfolder]: For 167655/171993 co-relation queries the response was YES. [2022-11-23 02:48:48,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103325 conditions, 16203 events. 11386/16203 cut-off events. For 167655/171993 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 95569 event pairs, 1502 based on Foata normal form. 1545/17044 useless extension candidates. Maximal degree in co-relation 103304. Up to 10600 conditions per place. [2022-11-23 02:48:48,947 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 127 selfloop transitions, 53 changer transitions 0/203 dead transitions. [2022-11-23 02:48:48,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 203 transitions, 3114 flow [2022-11-23 02:48:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:48:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:48:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 714 transitions. [2022-11-23 02:48:48,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5010526315789474 [2022-11-23 02:48:48,951 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 714 transitions. [2022-11-23 02:48:48,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 714 transitions. [2022-11-23 02:48:48,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:48,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 714 transitions. [2022-11-23 02:48:48,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:48,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:48,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:48,959 INFO L175 Difference]: Start difference. First operand has 77 places, 149 transitions, 2227 flow. Second operand 5 states and 714 transitions. [2022-11-23 02:48:48,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 203 transitions, 3114 flow [2022-11-23 02:48:49,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 203 transitions, 3031 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-23 02:48:49,229 INFO L231 Difference]: Finished difference. Result has 80 places, 162 transitions, 2552 flow [2022-11-23 02:48:49,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2552, PETRI_PLACES=80, PETRI_TRANSITIONS=162} [2022-11-23 02:48:49,229 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2022-11-23 02:48:49,230 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 162 transitions, 2552 flow [2022-11-23 02:48:49,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:49,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:49,230 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:49,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:48:49,231 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:49,231 INFO L85 PathProgramCache]: Analyzing trace with hash -854858520, now seen corresponding path program 2 times [2022-11-23 02:48:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:49,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103295113] [2022-11-23 02:48:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103295113] [2022-11-23 02:48:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103295113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:50,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:50,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:48:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963639935] [2022-11-23 02:48:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:50,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:48:50,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:48:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:48:50,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 285 [2022-11-23 02:48:50,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 162 transitions, 2552 flow. Second operand has 7 states, 7 states have (on average 118.42857142857143) internal successors, (829), 7 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:50,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:50,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 285 [2022-11-23 02:48:50,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:53,886 INFO L130 PetriNetUnfolder]: 15864/21737 cut-off events. [2022-11-23 02:48:53,886 INFO L131 PetriNetUnfolder]: For 181931/181931 co-relation queries the response was YES. [2022-11-23 02:48:53,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131137 conditions, 21737 events. 15864/21737 cut-off events. For 181931/181931 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 115559 event pairs, 1459 based on Foata normal form. 64/21801 useless extension candidates. Maximal degree in co-relation 131115. Up to 12101 conditions per place. [2022-11-23 02:48:54,083 INFO L137 encePairwiseOnDemand]: 271/285 looper letters, 131 selfloop transitions, 111 changer transitions 0/242 dead transitions. [2022-11-23 02:48:54,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 242 transitions, 3781 flow [2022-11-23 02:48:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:48:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:48:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 661 transitions. [2022-11-23 02:48:54,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.463859649122807 [2022-11-23 02:48:54,085 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 661 transitions. [2022-11-23 02:48:54,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 661 transitions. [2022-11-23 02:48:54,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:54,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 661 transitions. [2022-11-23 02:48:54,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:54,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:54,091 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:54,091 INFO L175 Difference]: Start difference. First operand has 80 places, 162 transitions, 2552 flow. Second operand 5 states and 661 transitions. [2022-11-23 02:48:54,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 242 transitions, 3781 flow [2022-11-23 02:48:54,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 242 transitions, 3688 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-23 02:48:54,316 INFO L231 Difference]: Finished difference. Result has 85 places, 195 transitions, 3388 flow [2022-11-23 02:48:54,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3388, PETRI_PLACES=85, PETRI_TRANSITIONS=195} [2022-11-23 02:48:54,317 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2022-11-23 02:48:54,318 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 195 transitions, 3388 flow [2022-11-23 02:48:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.42857142857143) internal successors, (829), 7 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:54,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:54,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:54,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:48:54,319 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash -851117130, now seen corresponding path program 3 times [2022-11-23 02:48:54,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:54,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824834947] [2022-11-23 02:48:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:54,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:54,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824834947] [2022-11-23 02:48:54,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824834947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:54,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:54,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:48:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807320882] [2022-11-23 02:48:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:54,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:48:54,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:48:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:48:55,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 285 [2022-11-23 02:48:55,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 195 transitions, 3388 flow. Second operand has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:55,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:48:55,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 285 [2022-11-23 02:48:55,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:48:58,278 INFO L130 PetriNetUnfolder]: 13311/18934 cut-off events. [2022-11-23 02:48:58,278 INFO L131 PetriNetUnfolder]: For 261091/266549 co-relation queries the response was YES. [2022-11-23 02:48:58,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138447 conditions, 18934 events. 13311/18934 cut-off events. For 261091/266549 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 113634 event pairs, 1389 based on Foata normal form. 1929/20059 useless extension candidates. Maximal degree in co-relation 138423. Up to 9812 conditions per place. [2022-11-23 02:48:58,446 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 131 selfloop transitions, 94 changer transitions 0/261 dead transitions. [2022-11-23 02:48:58,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 261 transitions, 4705 flow [2022-11-23 02:48:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:48:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:48:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 710 transitions. [2022-11-23 02:48:58,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4982456140350877 [2022-11-23 02:48:58,449 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 710 transitions. [2022-11-23 02:48:58,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 710 transitions. [2022-11-23 02:48:58,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:48:58,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 710 transitions. [2022-11-23 02:48:58,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:58,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:58,455 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:58,455 INFO L175 Difference]: Start difference. First operand has 85 places, 195 transitions, 3388 flow. Second operand 5 states and 710 transitions. [2022-11-23 02:48:58,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 261 transitions, 4705 flow [2022-11-23 02:48:58,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 261 transitions, 4584 flow, removed 48 selfloop flow, removed 1 redundant places. [2022-11-23 02:48:58,796 INFO L231 Difference]: Finished difference. Result has 89 places, 216 transitions, 4058 flow [2022-11-23 02:48:58,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4058, PETRI_PLACES=89, PETRI_TRANSITIONS=216} [2022-11-23 02:48:58,797 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2022-11-23 02:48:58,797 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 216 transitions, 4058 flow [2022-11-23 02:48:58,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:58,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:48:58,798 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:48:58,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:48:58,798 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:48:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:48:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1027574776, now seen corresponding path program 4 times [2022-11-23 02:48:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:48:58,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291232618] [2022-11-23 02:48:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:48:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:48:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:48:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:48:59,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:48:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291232618] [2022-11-23 02:48:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291232618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:48:59,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:48:59,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:48:59,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984904380] [2022-11-23 02:48:59,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:48:59,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:48:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:48:59,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:48:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:49:00,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 285 [2022-11-23 02:49:00,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 216 transitions, 4058 flow. Second operand has 7 states, 7 states have (on average 118.42857142857143) internal successors, (829), 7 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:00,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:49:00,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 285 [2022-11-23 02:49:00,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:49:04,989 INFO L130 PetriNetUnfolder]: 19170/26343 cut-off events. [2022-11-23 02:49:04,989 INFO L131 PetriNetUnfolder]: For 275686/275686 co-relation queries the response was YES. [2022-11-23 02:49:05,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183069 conditions, 26343 events. 19170/26343 cut-off events. For 275686/275686 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 145976 event pairs, 1379 based on Foata normal form. 128/26471 useless extension candidates. Maximal degree in co-relation 183043. Up to 14317 conditions per place. [2022-11-23 02:49:05,226 INFO L137 encePairwiseOnDemand]: 271/285 looper letters, 164 selfloop transitions, 184 changer transitions 0/348 dead transitions. [2022-11-23 02:49:05,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 348 transitions, 6187 flow [2022-11-23 02:49:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:49:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 02:49:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1057 transitions. [2022-11-23 02:49:05,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4635964912280702 [2022-11-23 02:49:05,231 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1057 transitions. [2022-11-23 02:49:05,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1057 transitions. [2022-11-23 02:49:05,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:49:05,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1057 transitions. [2022-11-23 02:49:05,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.125) internal successors, (1057), 8 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:05,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:05,238 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:05,239 INFO L175 Difference]: Start difference. First operand has 89 places, 216 transitions, 4058 flow. Second operand 8 states and 1057 transitions. [2022-11-23 02:49:05,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 348 transitions, 6187 flow [2022-11-23 02:49:05,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 348 transitions, 6046 flow, removed 23 selfloop flow, removed 2 redundant places. [2022-11-23 02:49:05,833 INFO L231 Difference]: Finished difference. Result has 99 places, 275 transitions, 5699 flow [2022-11-23 02:49:05,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=3945, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5699, PETRI_PLACES=99, PETRI_TRANSITIONS=275} [2022-11-23 02:49:05,833 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2022-11-23 02:49:05,834 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 275 transitions, 5699 flow [2022-11-23 02:49:05,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.42857142857143) internal successors, (829), 7 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:05,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:49:05,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:49:05,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 02:49:05,835 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:49:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:49:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash 780527834, now seen corresponding path program 5 times [2022-11-23 02:49:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:49:05,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928130597] [2022-11-23 02:49:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:49:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:49:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:49:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:49:06,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:49:06,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928130597] [2022-11-23 02:49:06,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928130597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:49:06,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:49:06,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:49:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555220153] [2022-11-23 02:49:06,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:49:06,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:49:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:49:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:49:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:49:06,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 285 [2022-11-23 02:49:06,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 275 transitions, 5699 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:06,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:49:06,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 285 [2022-11-23 02:49:06,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:49:11,529 INFO L130 PetriNetUnfolder]: 15202/21790 cut-off events. [2022-11-23 02:49:11,529 INFO L131 PetriNetUnfolder]: For 375590/380965 co-relation queries the response was YES. [2022-11-23 02:49:11,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178371 conditions, 21790 events. 15202/21790 cut-off events. For 375590/380965 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 134431 event pairs, 1718 based on Foata normal form. 1684/22603 useless extension candidates. Maximal degree in co-relation 178341. Up to 10809 conditions per place. [2022-11-23 02:49:11,791 INFO L137 encePairwiseOnDemand]: 277/285 looper letters, 164 selfloop transitions, 96 changer transitions 0/321 dead transitions. [2022-11-23 02:49:11,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 321 transitions, 6757 flow [2022-11-23 02:49:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:49:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:49:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2022-11-23 02:49:11,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4905263157894737 [2022-11-23 02:49:11,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2022-11-23 02:49:11,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2022-11-23 02:49:11,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:49:11,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2022-11-23 02:49:11,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:11,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:11,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:11,801 INFO L175 Difference]: Start difference. First operand has 99 places, 275 transitions, 5699 flow. Second operand 5 states and 699 transitions. [2022-11-23 02:49:11,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 321 transitions, 6757 flow [2022-11-23 02:49:12,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 321 transitions, 6566 flow, removed 87 selfloop flow, removed 1 redundant places. [2022-11-23 02:49:12,819 INFO L231 Difference]: Finished difference. Result has 103 places, 279 transitions, 5906 flow [2022-11-23 02:49:12,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=5516, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5906, PETRI_PLACES=103, PETRI_TRANSITIONS=279} [2022-11-23 02:49:12,820 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 51 predicate places. [2022-11-23 02:49:12,820 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 279 transitions, 5906 flow [2022-11-23 02:49:12,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:12,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:49:12,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:49:12,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 02:49:12,822 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:49:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:49:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash 527693859, now seen corresponding path program 1 times [2022-11-23 02:49:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:49:12,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911334872] [2022-11-23 02:49:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:49:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:49:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:49:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:49:13,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:49:13,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911334872] [2022-11-23 02:49:13,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911334872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:49:13,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:49:13,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:49:13,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563507968] [2022-11-23 02:49:13,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:49:13,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:49:13,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:49:13,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:49:13,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:49:13,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 285 [2022-11-23 02:49:13,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 279 transitions, 5906 flow. Second operand has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:13,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:49:13,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 285 [2022-11-23 02:49:13,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:49:21,028 INFO L130 PetriNetUnfolder]: 25884/35969 cut-off events. [2022-11-23 02:49:21,029 INFO L131 PetriNetUnfolder]: For 656733/659403 co-relation queries the response was YES. [2022-11-23 02:49:21,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283089 conditions, 35969 events. 25884/35969 cut-off events. For 656733/659403 co-relation queries the response was YES. Maximal size of possible extension queue 1634. Compared 219197 event pairs, 2643 based on Foata normal form. 2680/38557 useless extension candidates. Maximal degree in co-relation 283057. Up to 16759 conditions per place. [2022-11-23 02:49:21,296 INFO L137 encePairwiseOnDemand]: 272/285 looper letters, 183 selfloop transitions, 136 changer transitions 185/508 dead transitions. [2022-11-23 02:49:21,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 508 transitions, 11885 flow [2022-11-23 02:49:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:49:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:49:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 674 transitions. [2022-11-23 02:49:21,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4729824561403509 [2022-11-23 02:49:21,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 674 transitions. [2022-11-23 02:49:21,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 674 transitions. [2022-11-23 02:49:21,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:49:21,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 674 transitions. [2022-11-23 02:49:21,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:21,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:21,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:21,302 INFO L175 Difference]: Start difference. First operand has 103 places, 279 transitions, 5906 flow. Second operand 5 states and 674 transitions. [2022-11-23 02:49:21,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 508 transitions, 11885 flow [2022-11-23 02:49:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 508 transitions, 11647 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-23 02:49:22,406 INFO L231 Difference]: Finished difference. Result has 107 places, 283 transitions, 6558 flow [2022-11-23 02:49:22,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=5765, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6558, PETRI_PLACES=107, PETRI_TRANSITIONS=283} [2022-11-23 02:49:22,407 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2022-11-23 02:49:22,408 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 283 transitions, 6558 flow [2022-11-23 02:49:22,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:22,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:49:22,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:49:22,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 02:49:22,409 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-23 02:49:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:49:22,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1043823622, now seen corresponding path program 1 times [2022-11-23 02:49:22,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:49:22,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760245435] [2022-11-23 02:49:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:49:22,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:49:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:49:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:49:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:49:22,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760245435] [2022-11-23 02:49:22,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760245435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:49:22,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:49:22,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:49:22,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759247651] [2022-11-23 02:49:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:49:22,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:49:22,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:49:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:49:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:49:22,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 285 [2022-11-23 02:49:22,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 283 transitions, 6558 flow. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:49:22,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:49:22,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 285 [2022-11-23 02:49:22,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand